Mountain View Weather
Town • San Francisco Bay Area
Mountain View runs from the Castro Street downtown and its Caltrain and light rail station north across Highway 101 to Shoreline Park on the Bay. Google's campus and NASA Ames sit in between. Settlers named the town for its view of Black Mountain on the ridge to the southwest, and that skyline is still the backdrop. Its signature outdoor spot is Shoreline Lake, a 50-acre saltwater lake filled with water pumped in from the Bay, where sailors and windsurfers learn in the sheltered water.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Mountain View weather today and through the year
It's 53°F at Mountain View right now (feels like 50°F), with 6 mph wind and a comfort score of 77. Monday's forecast high at Mountain View is 56°F, 10°F below the mid November normal of 66°F. The best window today is 10 AM to 1 PM, at about 54°F with a 3 mph wind (comfort 64).
August is the warmest month at Mountain View, with an average high of 79°F. December is the coldest, with an average low of 41°F. February is the wettest month (3.6 in.), out of about 17.8 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Mountain View are June, July, and August. The best hours are usually 10 AM to 1 PM in June, 10 AM to 1 PM in July, and 10 AM to 1 PM in August.
Mountain View's north side sits right on the Bay, and that is where its weather story is clearest. On summer afternoons the sea breeze sweeps south down San Francisco Bay and across the salt marshes. At Shoreline Lake, mornings are light and afternoons bring winds up to about 25 mph. Downtown, a couple of miles inland, gets the same breeze softened by buildings and trees.
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 Mountain View in the next few days
No active National Weather Service alerts for this location.
Best time to go
The best window today is 10 AM to 1 PM, at about 54°F with a 3 mph wind (comfort 64).
Best day this week
Of the next 7 days, Friday looks best for Mountain View, with a 61°F high and midday comfort near 80. Thursday looks weakest (53).
Rain
Next good chance of rain: today (87%, about 0.25 in.).
Live weather map
Weather around Mountain View right now
Overcast and 53° at Mountain View right now.
About the live weather map for Mountain View
The map centers on Mountain View 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.
Mountain View vs nearby places
Typical summer conditions compared with Mountain View, 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 Mountain View |
|---|---|---|---|---|---|
| Los Altos | 1.7 mi | +2°F | 14% | 9 mph | a very similar climate |
| Sunnyvale | 2.9 mi | +1°F | 16% | 10 mph | a very similar climate |
| Los Altos Hills | 3.5 mi | +2°F | 16% | 9 mph | a very similar climate |
| Half Moon Bay | 19.7 mi | -15°F | 64% | 8 mph | more summer morning fog (64% vs 17% of morning hours) and about 15°F cooler on summer afternoons |
| Año Nuevo State Park | 23.1 mi | -20°F | 42% | 14 mph | about 20°F cooler on summer afternoons and about 77% more rain a year |
| Año Nuevo Point | 23.8 mi | -20°F | 42% | 14 mph | about 20°F cooler on summer afternoons and about 77% more rain a year |
Places with a climate like Mountain View's
- Union City (15 mi away): nearly the same temperatures every month
- Edgewood Park & Natural Preserve (12 mi away): similar temperatures through the year
- Fremont (12 mi away): similar temperatures through the year
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Mountain View climate comparisons mean
These cards compare recent conditions at Mountain View 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 Mountain View 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.
Mountain View weather by month
August is the warmest month at Mountain View, with an average high of 79°F. December is the coldest, with an average low of 41°F. February is the wettest month (3.6 in.), out of about 17.8 in. a year. Morning fog peaks in August, when fog or low cloud covers 20% of the hours from 6 to 10 AM. June has the clearest middays, with clouds covering about 12% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Mountain View are June, July, and August. The best hours are usually 10 AM to 1 PM in June, 10 AM to 1 PM in July, and 10 AM to 1 PM in August.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 60°F | 41°F | 3.5 in | 8 | 12% | 30% | 5 mph | 9.9 h | 61 |
| Feb | 63°F | 43°F | 3.6 in | 8 | 11% | 25% | 7 mph | 10.8 h | 64 |
| Mar | 66°F | 45°F | 2.8 in | 7 | 10% | 30% | 8 mph | 11.9 h | 68 |
| Apr | 68°F | 46°F | 1.3 in | 5 | 7% | 25% | 9 mph | 13.2 h | 77 |
| May | 72°F | 50°F | 0.6 in | 3 | 9% | 22% | 10 mph | 14.2 h | 81 |
| Jun | 77°F | 53°F | 0.1 in | 2 | 11% | 12% | 10 mph | 14.7 h | 89 |
| Jul | 79°F | 55°F | 0.0 in | 0 | 19% | 12% | 10 mph | 14.5 h | 89 |
| Aug | 79°F | 55°F | 0.0 in | 1 | 20% | 12% | 9 mph | 13.6 h | 89 |
| Sep | 79°F | 54°F | 0.1 in | 1 | 13% | 15% | 8 mph | 12.3 h | 89 |
| Oct | 75°F | 50°F | 0.7 in | 4 | 12% | 16% | 7 mph | 11.1 h | 84 |
| Nov | 66°F | 44°F | 1.7 in | 5 | 11% | 20% | 6 mph | 10.1 h | 77 |
| Dec | 59°F | 41°F | 3.4 in | 8 | 17% | 31% | 5 mph | 9.6 h | 60 |
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 Mountain View's weather different
When the fog burns off
11 AMwhen August fog usually thins (28% foggy at 9 AM)
Fog or low cloud covers Mountain View in 28% of 9 AM hours in August, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (7%).
When the wind picks up
1 PMwhen afternoon wind builds, February–October
From February through October, wind at Mountain View typically builds after 1 PM. In June it peaks around 4 PM, averaging 11 mph with 2% of those hours windy, while mornings average 3 mph.
Daylight
9.6–14.7 hof daylight, Dec to Jun
Days at Mountain View range from about 9.6 hours in December to 14.7 hours in June. In mid-June the sun sets around 8:29 PM, and in mid-December around 4:56 PM.
Seasons at Mountain View
- Warm seasonJun 30 – Sep 26 · highs 78°F+
The warm season lasts about 2.9 months, from Jun 30 to Sep 26, when the average high is 78°F or warmer. Highs peak around Aug 8 at about 79°F.
- Cool seasonNov 27 – Feb 28 · highs 64°F or lower
The cool season runs from Nov 27 to Feb 28, when the average high is 64°F or lower. The coldest nights come around Dec 8, with an average low near 41°F.
- Rainy seasonNov 24 – Mar 26 · 74% of the year's rain
The rainy season runs from Nov 24 to Mar 26, when a day has at least a 20% chance of measurable rain. That stretch brings 74% 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 5 and half of its annual total by Jan 27.
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, Mountain View averaged 7 days a year at 90°F or hotter and no freezing nights. It averaged 10 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 61 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Jun 11, 2026 (99°F) and the coldest night was Jan 28, 2025 (34°F). The wettest day was Feb 5, 2025 (1.43 in.), and the strongest 2 PM gust was 51 mph on Mar 12, 2025.
- 7days at 90°F or hotter
- 0nights at or below freezing
- 10days with ½ in. of rain or more
- 1afternoon with 20+ mph wind
- 61mornings with 3+ hours of fog or low cloud
- Hottest day99°FJun 11, 2026
- Coldest night34°FJan 28, 2025
- Wettest day1.43 inFeb 5, 2025
- Strongest 2 PM gust51 mphMar 12, 2025
What shapes Mountain View's weather
The Santa Cruz Mountains, rising behind Black Mountain to the southwest, keep most coastal fog out of Mountain View. Summer mornings can start under low clouds when the marine layer, the cool, moist air the ocean feeds ashore, is deep. They usually clear to sunny afternoons that are milder than in San Jose, thanks to the Bay. On calm summer nights the city cools off well.
Like the rest of the Santa Clara Valley, Mountain View is in the mountains' rain shadow, the drier zone on the side away from the ocean. Most of its rain falls from November through March. Fall is the season for offshore winds, which blow dry air from inland toward the coast. They shut off the Bay breeze and can bring some of the year's hottest and driest days.
Tips for visiting Mountain View
Sail or windsurf in the morning to learn
Shoreline Lake has light morning winds suited to beginners. Afternoon winds can reach 25 mph across the lake.
Ride transit to downtown
Mountain View's Caltrain station at 600 W. Evelyn Avenue connects to VTA buses and the Orange light rail line.
Check your flood risk before winter
Valley Water urges Santa Clara County residents to check whether their address is in a FEMA flood zone, even away from creeks.
Take the Hopper to the hills
Silicon Valley Hopper runs on-demand rides from the Mountain View Caltrain station to Rancho San Antonio, where trails climb toward Black Mountain.
Mountain View through the seasons
- Spring (March–May)
- Spring brings mild, increasingly sunny days, and the afternoon Bay breeze builds again.
- Summer (June–August)
- Summer brings warm, sunny afternoons downtown and steady wind at Shoreline. Predictable summer breezes make this the main sailing season on the lake.
- Fall (September–November)
- Offshore winds, most common in fall, cut off the cooling Bay breeze and can send valley temperatures soaring. Clear, crisp days follow when the pattern breaks.
- Winter (December–February)
- Winter is the rainy season. Most of the valley's rain falls between November and March, and calm, clear nights between storms are the coldest of the year.
Activities and the weather that matters
- Sailing and windsurfing at Shoreline Lake: Light morning wind suits learners, and afternoon wind of up to 25 mph suits experienced sailors. The enclosed lake keeps waves small.
- Walking and biking the Shoreline trails: Calm mornings are best. The open shoreline catches the full afternoon wind off the Bay, which feels cold even in summer.
- Dining on Castro Street: Outdoor tables are comfortable most evenings from spring through fall. Bring a layer once the sun goes down.
Official sources and current conditions
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 | 63.8° / 45.8° | 6.6h | 1d | 1.76" | 23 |
| December 2024 | 77 | 61.8° / 45.1° | 5.4h | 6d | 2.92" | 14 |
| January 2025 | 85 | 60.6° / 40.8° | 7.1h | 3d | 0.07" | 22 |
| February 2025 | 80 | 62.6° / 44.4° | 6.7h | 2d | 4.61" | 17 |
| March 2025 | 87 | 63.7° / 46.1° | 8.5h | 0d | 1.84" | 24 |
| April 2025 | 92 | 68.5° / 48.8° | 9.7h | 3d | 0.38" | 26 |
| May 2025 | 95 | 75° / 52.4° | 11.9h | 0d | 0.08" | 31 |
| June 2025 | 95 | 74.9° / 54.6° | 12.4h | 0d | 0" | 30 |
| July 2025 | 93 | 76.2° / 58° | 11.6h | 2d | 0" | 31 |
| August 2025 | 92 | 80° / 59.3° | 10.7h | 8d | 0" | 31 |
| September 2025 | 92 | 79.5° / 61.9° | 9.4h | 3d | 0.08" | 29 |
| October 2025 | 90 | 72.9° / 54° | 8.2h | 2d | 1.19" | 28 |
| November 2025 | 79 | 65.1° / 49.7° | 6.4h | 9d | 2.44" | 16 |
| December 2025 | 73 | 59° / 45.5° | 5.4h | 10d | 2.52" | 6 |
| January 2026 | 82 | 62.2° / 43.7° | 6.8h | 2d | 2.78" | 23 |
| February 2026 | 81 | 64.7° / 46.6° | 6.9h | 6d | 2.93" | 20 |
| March 2026 | 95 | 76.9° / 51.6° | 9.7h | 0d | 0" | 30 |
| April 2026 | 89 | 69.4° / 50.7° | 9h | 3d | 1.94" | 24 |
| May 2026 | 93 | 73.1° / 53.9° | 11.5h | 2d | 0.23" | 30 |
| June 2026 | 94 | 78.2° / 57.5° | 12.2h | 1d | 0" | 29 |
| July 2026 | 94 | 79.2° / 58.8° | 11.5h | 0d | 0" | 31 |
| August 2026 | 91 | 78° / 59.7° | 10.7h | 8d | 0" | 31 |
| September 2026 | 94 | 78.7° / 57.2° | 9.9h | 1d | 0.03" | 29 |
| October 2026 | 91 | 75.8° / 53.7° | 8.1h | 3d | 0.07" | 29 |
Climate Trends
Average Temperature by Month
About the Mountain View climate charts
The temperature chart compares average monthly highs and lows at Mountain View, 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 Mountain View. 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 Mountain View, the warmest typical hour is 3 PM in August (80°F). The coldest is 7 AM in January (44°F).
- Fog: Fog or low cloud covers Mountain View in 28% of 9 AM hours in August, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (7%).
- Wind: From February through October, wind at Mountain View typically builds after 1 PM. In June it peaks around 4 PM, averaging 11 mph with 2% of those hours windy, while mornings average 3 mph.
- Cloud Cover: June middays are the clearest at Mountain View (12% average cloud cover), and December middays are the cloudiest (31%).
- Solar Radiation: The strongest typical sun at Mountain View comes at 1 PM in June, averaging 981 W/m².
How to read the hourly heatmaps for Mountain View
This heatmap shows how average temperature at Mountain View 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 Mountain View. 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 Mountain View 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 Mountain View 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 Mountain View 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 Mountain View
- October 2026 recap: October 2026 at Mountain View averaged a high of 76°F, 1°F warmer than the 1991-2020 normal of 75°F. It brought 0.07 in. of rain, compared with a normal of 0.74 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 14.1 in. of rain to Mountain View, 79% of the 17.8 in. normal.
Location Details
Mountain View weather questions
Everything you need to know about weather and visiting Mountain View
What is the weather like at Mountain View today?
It's 53°F at Mountain View right now, with a comfort score of 77 (great). Monday's forecast high at Mountain View is 56°F, 10°F below the mid November normal of 66°F. The best window today is 10 AM to 1 PM, at about 54°F with a 3 mph wind (comfort 64).
What is the best month to visit Mountain View?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Mountain View are June, July, and August. The best hours are usually 10 AM to 1 PM in June, 10 AM to 1 PM in July, and 10 AM to 1 PM in August. The warm season lasts about 2.9 months, from Jun 30 to Sep 26, when the average high is 78°F or warmer. Highs peak around Aug 8 at about 79°F.
What are the warmest and coldest months at Mountain View?
August is the warmest month at Mountain View, with an average high of 79°F. December is the coldest, with an average low of 41°F.
When does the fog burn off at Mountain View?
Fog or low cloud covers Mountain View in 28% of 9 AM hours in August, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (7%).
When is it windiest at Mountain View?
From February through October, wind at Mountain View typically builds after 1 PM. In June it peaks around 4 PM, averaging 11 mph with 2% of those hours windy, while mornings average 3 mph.
How much rain does Mountain View get?
February is the wettest month (3.6 in.), out of about 17.8 in. a year. The rainy season runs from Nov 24 to Mar 26, when a day has at least a 20% chance of measurable rain. That stretch brings 74% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 14.1 in. of rain to Mountain View, 79% of the 17.8 in. normal.
What kind of place is Mountain View?
Mountain View runs from the Castro Street downtown and its Caltrain and light rail station north across Highway 101 to Shoreline Park on the Bay. Google's campus and NASA Ames sit in between. Settlers named the town for its view of Black Mountain on the ridge to the southwest, and that skyline is still the backdrop. Its signature outdoor spot is Shoreline Lake, a 50-acre saltwater lake filled with water pumped in from the Bay, where sailors and windsurfers learn in the sheltered water.
What is Mountain View weather like in November?
November at Mountain View averages a high of 66°F and a low of 44°F, with 1.7 in. of rain over about 5 rainy days. About 11% of morning hours are foggy. Afternoon wind averages 6 mph.
More about Mountain View weather
Guides that explain the weather here and nearby
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.
- Shoreline Lake, History (accessed 2026-10-27)
- Caltrain, Mountain View station (accessed 2026-10-27)
- Valley Water, Flood Ready (accessed 2026-10-27)
- Midpeninsula Regional Open Space District, Rancho San Antonio Preserve (accessed 2026-10-27)
- National Weather Service, Climate of San Jose (NOAA Technical Memorandum NWS WR-259) (accessed 2026-10-27)
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