Livermore Weather
Town • San Francisco Bay Area
Livermore spreads across the eastern end of the Livermore Valley, the last city before I-580 climbs over the Altamont Pass toward the Central Valley. Its downtown sits beside the Livermore Transit Center and ACE train stop, and more than 50 wineries ring the city, along with Lawrence Livermore and Sandia national laboratories. South of town the land rises through vineyards into the Diablo Range toward Lake Del Valle. To the northeast, the wind-farm hills of the Altamont close off the valley.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Livermore weather today and through the year
It's 51°F at Livermore right now (feels like 48°F), with 3 mph wind and a comfort score of 75. Monday's forecast high at Livermore is 56°F, 9°F below the mid November normal of 65°F. The best window today is 8 AM to 11 AM, at about 57°F with a 11 mph wind (comfort 70).
July is the warmest month at Livermore, with an average high of 89°F. January is the coldest, with an average low of 39°F. January is the wettest month (2.8 in.), out of about 14.6 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Livermore are June, September, and October. The best hours are usually 9 AM to noon in June, 9 AM to noon in September, and 11 AM to 2 PM in October.
Livermore sits at the far end of a funnel. Marine air that slips over the Dublin and Sunol grades has to cross the whole valley to get here. A climate study prepared for the valley's winegrowers found most of that airflow is steered around Mount Diablo and out through the Altamont Pass, northeast of town. The prevailing wind is from the southwest. From June through August the strongest winds in the pass blow from early evening to midnight. That is when the coast is coolest compared with the Central Valley.
Forecast updated November 15, 2026 at 4:00 AM PST. Climate figures come from NOAA 1991-2020 normals. Hourly patterns come from NOAA's HRRR hourly analysis from September 2014 to April 2026.
What to expect at Livermore in the next few days
No active National Weather Service alerts for this location.
Best time to go
The best window today is 8 AM to 11 AM, at about 57°F with a 11 mph wind (comfort 70).
Best day this week
Of the next 7 days, Friday looks best for Livermore, with a 60°F high and midday comfort near 76. Wednesday looks weakest (44).
Rain
Next good chance of rain: today (81%, about 0.03 in.).
Live weather map
Weather around Livermore right now
Overcast and 51° at Livermore right now.
About the live weather map for Livermore
The map centers on Livermore and stacks fog, satellite clouds, and precipitation radar on one view. Clouds come from the GOES-West satellite and rain from NOAA radar, and both show current conditions. Fog comes from our HRRR-based fog model, and the slider steps through its forecast for the next 12 hours.
Dots mark nearby places with their current temperature, colored by comfort score. Use the layer buttons to turn any layer off, or open the full map for every destination in the region.
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
Tip: Bay Area temperatures can change by 20 to 30°F over a short distance because of microclimates.
Livermore vs nearby places
Typical summer conditions compared with Livermore, from the same NOAA HRRR hourly record. The list shows the closest places, then nearby places whose climate differs the most.
| Place | Distance | Summer afternoons | Morning fog | Afternoon wind | Compared with Livermore |
|---|---|---|---|---|---|
| Pleasanton | 6 mi | same | 4% | 6 mph | a very similar climate |
| Del Valle Regional Park | 8.1 mi | -2°F | 10% | 11 mph | a very similar climate |
| Dublin | 9.3 mi | -3°F | 7% | 11 mph | about 39% more rain a year |
| Coyote Hills Regional Park | 19.7 mi | -23°F | 21% | 14 mph | about 23°F cooler on summer afternoons and windier summer afternoons (14 vs 8 mph) |
| Don Edwards Wildlife Refuge | 20.3 mi | -23°F | 18% | 16 mph | about 23°F cooler on summer afternoons and windier summer afternoons (16 vs 8 mph) |
| Redwood Regional Park | 23.8 mi | -15°F | 53% | 10 mph | more summer morning fog (53% vs 6% of morning hours) and about 15°F cooler on summer afternoons |
Places with a climate like Livermore's
- Concord (25 mi away): nearly the same temperatures every month
- Wooden Valley (51 mi away): nearly the same temperatures every month
- Black Diamond Mines Regional Preserve (20 mi away): nearly the same temperatures every month
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Livermore climate comparisons mean
These cards compare recent conditions at Livermore with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available. Fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.
Positive and negative differences describe how Livermore departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.
Livermore weather by month
July is the warmest month at Livermore, with an average high of 89°F. January is the coldest, with an average low of 39°F. January is the wettest month (2.8 in.), out of about 14.6 in. a year. Morning fog peaks in December, when fog or low cloud covers 20% of the hours from 6 to 10 AM. July has the clearest middays, with clouds covering about 3% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Livermore are June, September, and October. The best hours are usually 9 AM to noon in June, 9 AM to noon in September, and 11 AM to 2 PM in October.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 57°F | 39°F | 2.8 in | 7 | 16% | 30% | 6 mph | 9.8 h | 60 |
| Feb | 61°F | 42°F | 2.8 in | 7 | 9% | 23% | 7 mph | 10.7 h | 63 |
| Mar | 65°F | 44°F | 2.2 in | 6 | 5% | 28% | 8 mph | 11.9 h | 69 |
| Apr | 70°F | 46°F | 1.1 in | 5 | 5% | 20% | 8 mph | 13.2 h | 79 |
| May | 76°F | 51°F | 0.5 in | 3 | 5% | 15% | 9 mph | 14.2 h | 83 |
| Jun | 84°F | 55°F | 0.1 in | 1 | 5% | 5% | 9 mph | 14.8 h | 88 |
| Jul | 89°F | 58°F | 0.0 in | 0 | 8% | 3% | 8 mph | 14.5 h | 84 |
| Aug | 88°F | 58°F | 0.0 in | 1 | 5% | 4% | 8 mph | 13.6 h | 85 |
| Sep | 85°F | 56°F | 0.1 in | 1 | 5% | 8% | 7 mph | 12.3 h | 87 |
| Oct | 77°F | 51°F | 0.7 in | 3 | 6% | 12% | 6 mph | 11.1 h | 86 |
| Nov | 65°F | 44°F | 1.5 in | 5 | 7% | 19% | 6 mph | 10.1 h | 77 |
| Dec | 57°F | 39°F | 2.7 in | 7 | 20% | 30% | 6 mph | 9.6 h | 59 |
Morning fog is the share of hours from 6 to 10 AM with fog or low cloud. Midday cloud is the average from 11 AM to 3 PM, and afternoon wind is the average from 1 to 5 PM. The highlighted rows are the most comfortable months.
What makes Livermore's weather different
When the fog burns off
11 AMwhen December fog usually thins (23% foggy at 8 AM)
Fog or low cloud covers Livermore in 23% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by 11 AM. June mornings are the least foggy (5%).
When the wind picks up
1 PMwhen afternoon wind builds, February–October
From February through October, wind at Livermore typically builds after 1 PM. In May it peaks around 5 PM, averaging 11 mph with 4% of those hours windy, while mornings average 5 mph.
Hot hours
4 habove 85°F on a typical July afternoon
In July, the average temperature stays at or above 85°F for 4 hours a day.
Daylight
9.6–14.8 hof daylight, Dec to Jun
Days at Livermore range from about 9.6 hours in December to 14.8 hours in June. In mid-June the sun sets around 8:31 PM, and in mid-December around 4:55 PM.
Seasons at Livermore
- Warm seasonJun 25 – Sep 25 · highs 84°F+
The warm season lasts about 3.1 months, from Jun 25 to Sep 25, when the average high is 84°F or warmer. Highs peak around Jul 8 at about 89°F.
- Hot afternoonsJun 28 – Sep 23 · highs 85°F+
Average highs reach 85°F or more from Jun 28 to Sep 23.
- Cool seasonNov 27 – Feb 28 · highs 63°F or lower
The cool season runs from Nov 27 to Feb 28, when the average high is 63°F or lower. The coldest nights come around Jan 8, with an average low near 39°F.
- Rainy seasonDec 4 – Mar 16 · 63% of the year's rain
The rainy season runs from Dec 4 to Mar 16, when a day has at least a 20% chance of measurable rain. That stretch brings 63% of the year's rain.
The dark line marks today. Season dates come from the smoothed daily NOAA 1991-2020 normals. Counting from Oct. 1, a typical year has its first inch of rain by Nov 6 and half of its annual total by Jan 26.
Days per year and extremes (Nov 1, 2024 to Oct 31, 2026)
This record runs from Nov 1, 2024 to Oct 31, 2026. Over this record, Livermore averaged 42 days a year at 90°F or hotter and 3 nights a year at or below freezing. It averaged 7 days a year with at least half an inch of rain and 1 afternoon with wind of 20 mph or more at 2 PM. About 37 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Sep 9, 2026 (101°F) and the coldest night was Feb 11, 2025 (31°F). The wettest day was Oct 14, 2025 (1.25 in.), and the strongest 2 PM gust was 42 mph on Feb 13, 2025.
- 42days at 90°F or hotter
- 3nights at or below freezing
- 7days with ½ in. of rain or more
- 1afternoon with 20+ mph wind
- 37mornings with 3+ hours of fog or low cloud
- Hottest day101°FSep 9, 2026
- Coldest night31°FFeb 11, 2025
- Wettest day1.25 inOct 14, 2025
- Strongest 2 PM gust42 mphFeb 13, 2025
What shapes Livermore's weather
Some parts of Livermore run cooler than others. A climate study of the Livermore Valley wine region found the area around the national laboratories, in the south and east of town, cooler than expected. The likely reason is that air crossing the Sunol Grade runs through the Vallecitos Valley and arrives from the south. The built-up center read warmer, which the author tied partly to an urban heat island, the extra warmth that pavement and buildings hold. The study also found Livermore's highs had been rising faster than those in Pleasanton and San Ramon.
Livermore is drier than the western end of the Tri-Valley. Rainfall drops steeply from the hills west of Pleasanton to the eastern valley. The hills east of Livermore toward the Altamont are the driest part of the wine region. In winter the summer wind pattern often reverses. Light northeast winds prevail, so air drifts in from the Central Valley side of the pass rather than from the Bay.
Tips for visiting Livermore
Taste wine early or late in summer
More than 50 wineries surround the city. On hot days, visit in the morning or toward evening and skip the midafternoon peak.
Expect evening wind near the Altamont
Summer winds in the pass are strongest from about 6 p.m. to midnight, and winter storms bring the year's highest gusts.
Ride ACE to downtown
The ACE train stops at the Livermore Transit Center near downtown, with a second stop at Vasco Road at the western foot of the Altamont Pass.
Book a guide for Brushy Peak's summit
The lower trails at Brushy Peak north of town start from the Laughlin Road staging area. The summit of the 1,702-foot peak is open only on guided tours, which the Livermore Area Recreation and Park District runs.
Cool off indoors during extreme heat
The Livermore Area Recreation and Park District has opened the Robert Livermore Community Center as a cooling center during extreme heat. It did so in a 2017 heat wave when forecasts called for highs up to 115°F.
Livermore through the seasons
- Spring (March–May)
- Spring brings green hills and mild days. It is the best time for Brushy Peak and vineyard bike routes, before the grass dries and the heat sets in.
- Summer (June–August)
- Summer is the hottest, driest stretch. The sea breeze builds through the afternoon and blows hardest through the Altamont between dusk and midnight.
- Fall (September–November)
- Fall is harvest season in the vineyards. Heat waves can linger into early fall before the first rains reach the valley.
- Winter (December–February)
- Winter is the rainy season, though Livermore gets less rain than the western end of the valley. Morning fog and low cloud are most common in December and January.
Activities and the weather that matters
- Wine tasting: Mild spring and fall days are ideal. In summer, plan around afternoon heat and the evening wind.
- Cycling the vineyard roads south of town: Go early. Summer afternoons are hot, and a southwest breeze builds later in the day.
- Hiking Brushy Peak: Spring is best, when the grass is green. The open hills toward the Altamont are hot and windy in summer.
- Dinner downtown: Summer evenings cool off once the breeze arrives, which makes outdoor tables pleasant after sunset.
Official sources and current conditions
- ACE Rail: stations, including Livermore and Vasco Road
- East Bay Regional Park District: Brushy Peak
- East Bay Regional Park District: Del Valle
- East Bay Regional Park District: alerts and closures
Numbers on this page come from NOAA data. The text draws on the official sources linked above.
Historical Climate Data
Long-term weather patterns and climate data
Data sources: Recent temperatures come from NOAA URMA and recent precipitation from NOAA Stage IV. Fog, cloud, wind, humidity, and sunshine come from NOAA HRRR, and long-term baselines from NOAA 1991-2020 climate normals.
Climate Overview
Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline
🌟 Best Months to Visit
⚠️ Challenging Months
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| November 2024 | 84 | 62.9° / 43.5° | 6.6h | 0d | 1.2" | 23 |
| December 2024 | 75 | 58.9° / 43.2° | 5.2h | 6d | 2.9" | 12 |
| January 2025 | 85 | 59.6° / 38° | 7.1h | 1d | 0.13" | 24 |
| February 2025 | 81 | 61.3° / 42.3° | 6.9h | 2d | 3.3" | 16 |
| March 2025 | 86 | 62.1° / 44.1° | 8.3h | 0d | 1.71" | 24 |
| April 2025 | 93 | 69.4° / 46.9° | 9.9h | 0d | 0.29" | 28 |
| May 2025 | 93 | 77.2° / 51.1° | 12.3h | 0d | 0.06" | 29 |
| June 2025 | 95 | 81.8° / 53.3° | 12.7h | 1d | 0" | 30 |
| July 2025 | 94 | 83.6° / 56.7° | 12h | 1d | 0" | 30 |
| August 2025 | 89 | 88.6° / 58.6° | 11.3h | 0d | 0" | 27 |
| September 2025 | 92 | 83.4° / 60.5° | 9.9h | 1d | 0.31" | 28 |
| October 2025 | 91 | 73.4° / 52.2° | 8.1h | 1d | 1.76" | 28 |
| November 2025 | 80 | 63.9° / 47.4° | 6.7h | 7d | 1.89" | 15 |
| December 2025 | 71 | 55.1° / 43° | 5.6h | 13d | 1.4" | 8 |
| January 2026 | 81 | 58.9° / 40.4° | 6.9h | 3d | 2.03" | 22 |
| February 2026 | 82 | 63.2° / 43° | 6.9h | 6d | 2.79" | 20 |
| March 2026 | 95 | 77.1° / 48.9° | 9.8h | 0d | 0" | 30 |
| April 2026 | 90 | 69.4° / 48.4° | 9.4h | 0d | 1.83" | 26 |
| May 2026 | 95 | 76.1° / 51.9° | 11.7h | 1d | 0.38" | 31 |
| June 2026 | 93 | 82.9° / 56° | 12.3h | 0d | 0" | 29 |
| July 2026 | 92 | 86.2° / 58° | 11.9h | 0d | 0" | 30 |
| August 2026 | 92 | 88° / 58.4° | 11.2h | 0d | 0" | 29 |
| September 2026 | 93 | 81.5° / 56.2° | 10.2h | 0d | 0.01" | 29 |
| October 2026 | 89 | 78.8° / 52.8° | 8.4h | 1d | 0.24" | 25 |
Climate Trends
Average Temperature by Month
About the Livermore climate charts
The temperature chart compares average monthly highs and lows at Livermore, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.
Precipitation shows the total recorded or modeled rainfall for each month at Livermore. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.
Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns
Average local hour by month from 2014-09-30 to 2026-04-30
- Temperature: At Livermore, the warmest typical hour is 4 PM in July (87°F). The coldest is 7 AM in January (42°F).
- Fog: Fog or low cloud covers Livermore in 23% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by 11 AM. June mornings are the least foggy (5%).
- Wind: From February through October, wind at Livermore typically builds after 1 PM. In May it peaks around 5 PM, averaging 11 mph with 4% of those hours windy, while mornings average 5 mph.
- Cloud Cover: July middays are the clearest at Livermore (3% average cloud cover), and December middays are the cloudiest (30%).
- Solar Radiation: The strongest typical sun at Livermore comes at 1 PM in June, averaging 1003 W/m².
How to read the hourly heatmaps for Livermore
This heatmap shows how average temperature at Livermore changes by hour and month. Read left to right for the seasons and top to bottom for the time of day. Warmer colors mark the usual afternoon peaks, and cooler colors show overnight and winter lows.
This heatmap shows when fog or low cloud is most likely at Livermore. Darker cells mark the months and hours when fog has been most common. They help separate overnight or morning fog from cloud that tends to linger into the afternoon.
This heatmap shows the typical hourly wind pattern at Livermore through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.
This heatmap shows average cloud cover at Livermore for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.
This heatmap shows the average solar radiation reaching Livermore by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.
Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage. The red marker shows the current month and hour.
How recent months compared at Livermore
- October 2026 recap: October 2026 at Livermore averaged a high of 79°F, 5°F warmer than October 2025 (73°F).
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 12.1 in. of rain to Livermore, 83% of the 14.6 in. normal.
Location Details
Livermore weather questions
Everything you need to know about weather and visiting Livermore
What is the weather like at Livermore today?
It's 51°F at Livermore right now, with a comfort score of 75 (great). Monday's forecast high at Livermore is 56°F, 9°F below the mid November normal of 65°F. The best window today is 8 AM to 11 AM, at about 57°F with a 11 mph wind (comfort 70).
What is the best month to visit Livermore?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Livermore are June, September, and October. The best hours are usually 9 AM to noon in June, 9 AM to noon in September, and 11 AM to 2 PM in October. The warm season lasts about 3.1 months, from Jun 25 to Sep 25, when the average high is 84°F or warmer. Highs peak around Jul 8 at about 89°F.
What are the warmest and coldest months at Livermore?
July is the warmest month at Livermore, with an average high of 89°F. January is the coldest, with an average low of 39°F.
When does the fog burn off at Livermore?
Fog or low cloud covers Livermore in 23% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by 11 AM. June mornings are the least foggy (5%).
When is it windiest at Livermore?
From February through October, wind at Livermore typically builds after 1 PM. In May it peaks around 5 PM, averaging 11 mph with 4% of those hours windy, while mornings average 5 mph.
How much rain does Livermore get?
January is the wettest month (2.8 in.), out of about 14.6 in. a year. The rainy season runs from Dec 4 to Mar 16, when a day has at least a 20% chance of measurable rain. That stretch brings 63% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 12.1 in. of rain to Livermore, 83% of the 14.6 in. normal.
What kind of place is Livermore?
Livermore spreads across the eastern end of the Livermore Valley, the last city before I-580 climbs over the Altamont Pass toward the Central Valley. Its downtown sits beside the Livermore Transit Center and ACE train stop, and more than 50 wineries ring the city, along with Lawrence Livermore and Sandia national laboratories. South of town the land rises through vineyards into the Diablo Range toward Lake Del Valle. To the northeast, the wind-farm hills of the Altamont close off the valley.
What is Livermore weather like in November?
November at Livermore averages a high of 65°F and a low of 44°F, with 1.5 in. of rain over about 5 rainy days. Afternoon wind averages 6 mph.
More about Livermore weather
Guides that explain the weather here and nearby
- Livermore Valley: The Hottest Part of the Bay Area
- Bay Area Coastal vs. Inland: 30-Degree Temperature Differences
- Bay Area Microclimates and Rainfall Distribution
- Red Flag Warning vs. Fire Weather Watch: What Each Alert Level Means
- Fremont Weather Guide: Summer, Winter, Mission Peak and Nearby Cities
- What Is Advection Fog? How Marine Air Creates Coastal Fog
Data sources and methods
- Monthly temperatures and precipitation: NOAA 1991-2020 normals.
- Fog, cloud, wind, sun, and comfort by hour and month: NOAA's HRRR hourly analysis from September 2014 to April 2026.
- Daily records and recent months: NOAA URMA and HRRR analyses, plus NOAA Stage IV precipitation.
- Nearby comparisons and regional rankings use the same hourly HRRR summaries for every destination in the region.
- Alerts: National Weather Service. Tides and ocean temperature: NOAA CO-OPS, where shown.
- All statements on this page are computed from these datasets, apart from the “What shapes the weather” guide, which cites its sources inline.
- Patrick L. Shabram, Mesoclimate Patterns of the Livermore Valley AVA (2017, prepared for the Livermore Valley Winegrowers Association) (accessed 2026-10-27)
- California Public Utilities Commission, Tri-Valley project Draft EIR, Section C.2 Air Quality (climate and wind setting) (accessed 2026-10-27)
- Livermore Valley Chamber of Commerce, About Livermore (accessed 2026-10-27)
- Altamont Corridor Express, Stations (accessed 2026-10-27)
- East Bay Regional Park District, Brushy Peak Regional Preserve (accessed 2026-10-27)
- Livermore Valley Chamber of Commerce member news, LARPD release: Community Center serves as cooling center in extreme temperatures (Aug. 30, 2017) (accessed 2026-10-27)
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