Larkspur Weather
Town • San Francisco Bay Area
Larkspur stretches from Larkspur Landing, where Golden Gate ferries and SMART trains meet beside the mouth of Corte Madera Creek, back to its old downtown. Turn-of-the-century storefronts and early Queen Anne Victorians line Magnolia Avenue, once the main county road. That downtown is a historic district on the National Register of Historic Places. Baltimore Canyon, in the hills to the west, held one of California's earliest bowling alleys in the 1850s.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Larkspur weather today and through the year
It's 55°F at Larkspur right now (feels like 53°F), with 5 mph wind and a comfort score of 80. Today's forecast high at Larkspur is 63°F, close to the mid November normal of 62°F. No fog in the forecast for today at Larkspur. In November, 25% of morning hours here are foggy on average. The best window today is 9 AM to noon, at about 54°F with a 2 mph wind (comfort 61).
September is the warmest month at Larkspur, with an average high of 73°F. January is the coldest, with an average low of 44°F. December is the wettest month (6.8 in.), out of about 31.8 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Larkspur are September, July, and August. The best hours are usually 10 AM to 1 PM in September, 10 AM to 1 PM in July, and 10 AM to 1 PM in August.
Larkspur lies on the inland side of Mount Tamalpais, with the bulk of the mountain between it and the Pacific. The mountain blocks most of the marine layer, the low sheet of fog and cloud that moves in from the cold ocean. Summer fog usually reaches Larkspur the long way, through the Golden Gate and up the bay. By then it is often thinner and quicker to clear than on the coast.
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 Larkspur in the next few days
No active National Weather Service alerts for this location.
Fog
No fog in the forecast for today at Larkspur. In November, 25% of morning hours here are foggy on average.
Best time to go
The best window today is 9 AM to noon, at about 54°F with a 2 mph wind (comfort 61).
Best day this week
Of the next 7 days, Friday looks best for Larkspur, with a 60°F high and midday comfort near 79. Today looks weakest (47).
Rain
Next good chance of rain: today (83%, about 0.64 in.).
Live weather map
Weather around Larkspur right now
Overcast and 55° at Larkspur right now.
About the live weather map for Larkspur
The map centers on Larkspur 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.
Larkspur vs nearby places
Typical summer conditions compared with Larkspur, 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 Larkspur |
|---|---|---|---|---|---|
| Corte Madera | 1.5 mi | same | 14% | 6 mph | a very similar climate |
| Kentfield | 1.8 mi | +1°F | 17% | 7 mph | a very similar climate |
| Mill Valley | 2 mi | -3°F | 19% | 8 mph | a very similar climate |
| Rodeo Beach | 7 mi | -23°F | 48% | 13 mph | about 23°F cooler on summer afternoons and more summer morning fog (48% vs 18% of morning hours) |
| Ocean Beach | 12.1 mi | -22°F | 49% | 11 mph | about 22°F cooler on summer afternoons and more summer morning fog (49% vs 18% of morning hours) |
| Pacifica | 22.3 mi | -23°F | 56% | 9 mph | about 23°F cooler on summer afternoons and more summer morning fog (56% vs 18% of morning hours) |
Places with a climate like Larkspur's
- Visitacion Valley (17 mi away): nearly the same temperatures every month
- South San Francisco (21 mi away): nearly the same temperatures every month
- Bernal Heights (15 mi away): nearly the same temperatures every month
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Larkspur climate comparisons mean
These cards compare recent conditions at Larkspur 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 Larkspur 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.
Larkspur weather by month
September is the warmest month at Larkspur, with an average high of 73°F. January is the coldest, with an average low of 44°F. December is the wettest month (6.8 in.), out of about 31.8 in. a year. Morning fog peaks in December, when fog or low cloud covers 38% of the hours from 6 to 10 AM. July 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 Larkspur are September, July, and August. The best hours are usually 10 AM to 1 PM in September, 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 | 56°F | 44°F | 6.2 in | 10 | 34% | 37% | 5 mph | 9.8 h | 37 |
| Feb | 59°F | 45°F | 6.2 in | 10 | 18% | 27% | 6 mph | 10.7 h | 48 |
| Mar | 61°F | 46°F | 4.4 in | 9 | 18% | 30% | 7 mph | 11.9 h | 65 |
| Apr | 63°F | 48°F | 2.0 in | 6 | 11% | 24% | 7 mph | 13.2 h | 76 |
| May | 66°F | 50°F | 0.9 in | 4 | 12% | 22% | 7 mph | 14.2 h | 81 |
| Jun | 70°F | 52°F | 0.2 in | 2 | 12% | 12% | 6 mph | 14.8 h | 87 |
| Jul | 71°F | 54°F | 0.0 in | 0 | 21% | 12% | 5 mph | 14.5 h | 88 |
| Aug | 72°F | 55°F | 0.1 in | 1 | 23% | 14% | 5 mph | 13.6 h | 88 |
| Sep | 73°F | 55°F | 0.1 in | 1 | 18% | 15% | 6 mph | 12.3 h | 91 |
| Oct | 70°F | 52°F | 1.4 in | 5 | 19% | 19% | 5 mph | 11.1 h | 85 |
| Nov | 62°F | 48°F | 3.3 in | 8 | 25% | 24% | 5 mph | 10.0 h | 68 |
| Dec | 56°F | 44°F | 6.8 in | 11 | 38% | 41% | 5 mph | 9.5 h | 35 |
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.
In summer, recent daily NOAA readings at Larkspur average about 6°F warmer than the 1991-2020 normals. The normals average over a wider area that also covers nearby terrain. Read the monthly highs as a rough range, and use the recent months below for what Larkspur has actually seen.
What makes Larkspur's weather different
Among the 163 San Francisco Bay Area towns we track, Larkspur has the calmest summer afternoons.
- #1of 163
calmest summer afternoonsamong San Francisco Bay Area towns
When the fog burns off
3 PMwhen December fog usually thins (44% foggy at 8 AM)
Fog or low cloud covers Larkspur in 44% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by 3 PM. April mornings are the least foggy (11%).
When the wind picks up
2 PMwhen afternoon wind builds, April–June
From April through June, wind at Larkspur typically builds after 2 PM. In April it peaks around 6 PM, averaging 8 mph with 13% of those hours windy, while mornings average 5 mph.
Microclimate
−23°FRodeo Beach, 7 mi away, on summer afternoons
Rodeo Beach, 7 miles away, runs about 23°F cooler than Larkspur on summer afternoons. It also has far more summer morning fog, 48% of morning hours compared with 18%.
Daylight
9.5–14.8 hof daylight, Dec to Jun
Days at Larkspur range from about 9.5 hours in December to 14.8 hours in June. In mid-June the sun sets around 8:34 PM, and in mid-December around 4:55 PM.
Seasons at Larkspur
- Warm seasonJul 26 – Oct 1 · highs 71°F+
The warm season lasts about 2.2 months, from Jul 26 to Oct 1, when the average high is 71°F or warmer. Highs peak around Sep 8 at about 73°F.
- Cool seasonNov 29 – Feb 27 · highs 60°F or lower
The cool season runs from Nov 29 to Feb 27, when the average high is 60°F or lower. The coldest nights come around Jan 8, with an average low near 44°F.
- Rainy seasonOct 30 – Apr 15 · 88% of the year's rain
The rainy season runs from Oct 30 to Apr 15, when a day has at least a 20% chance of measurable rain. That stretch brings 88% 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 Oct 22 and half of its annual total by Jan 22.
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, Larkspur averaged 12 days a year at 90°F or hotter and no freezing nights. It averaged 23 days a year with at least half an inch of rain and 2 afternoons with wind of 20 mph or more at 2 PM. About 106 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Sep 9, 2026 (99°F) and the coldest night was Feb 10, 2025 (37°F). The wettest day was Feb 16, 2026 (3.11 in.), and the strongest 2 PM gust was 47 mph on Mar 12, 2025.
- 12days at 90°F or hotter
- 0nights at or below freezing
- 23days with ½ in. of rain or more
- 2afternoons with 20+ mph wind
- 106mornings with 3+ hours of fog or low cloud
- Hottest day99°FSep 9, 2026
- Coldest night37°FFeb 10, 2025
- Wettest day3.11 inFeb 16, 2026
- Strongest 2 PM gust47 mphMar 12, 2025
What shapes Larkspur's weather
Larkspur has two settings. The ferry terminal and Larkspur Landing sit on flat shoreline at the mouth of Corte Madera Creek, open to the afternoon breeze off the bay. Downtown and the canyon neighborhoods west of Magnolia Avenue sit against wooded hills, more sheltered from wind and shaded earlier in the evening.
Water is the town's main weather hazard. Larkspur says it is vulnerable to flooding from high tides, heavy rain, and rising water in Corte Madera Creek. King tides, the highest tides of the year, have flooded streets and closed roads in low-lying neighborhoods. Storms that stall over Mount Tamalpais send that runoff down the creek toward the bay.
Tips for visiting Larkspur
Connect train to ferry
SMART's Larkspur station is at Larkspur Landing, with a shuttle to the ferry terminal.
Watch for king-tide street flooding
Low-lying streets can flood and close during king tides and storms, so check before driving the shoreline roads. The city keeps self-serve sand and bags at Piper Park, 250 Doherty Drive, so bring a shovel.
Shop the Saturday market
Marin Country Mart, beside the ferry dock at Larkspur Landing, holds a farmers market on Saturday mornings.
Bring a jacket for the ferry deck
The open deck on the bay is much cooler and windier than downtown Larkspur, especially on summer afternoons.
Larkspur through the seasons
- Spring (March–May)
- Spring is mild and usually sunnier than the coast. Afternoon wind off the bay picks up at the Landing as the season goes on.
- Summer (June–August)
- Fog reaches the waterfront some mornings but usually clears early. The ferry deck is much cooler and windier than downtown, so bring a jacket for the crossing.
- Fall (September–October)
- Fall brings warm, settled weather, and September is usually the warmest and most comfortable month of the year.
- Winter (November–February)
- Winter brings king tides and storms that can flood low-lying streets and close roads.
Activities and the weather that matters
- Ferry ride to San Francisco: Clear days give views of Mount Tamalpais, Angel Island, and the Golden Gate Bridge. Fog and wind on the bay make the outside deck cold.
- Strolling downtown Magnolia Avenue: Downtown is pleasant most afternoons and sheltered from the bay wind, and it works on gray days too.
- Farmers market at Marin Country Mart: The market runs on Saturday mornings by the water. In summer, those mornings can start foggy or breezy.
- Walking in Baltimore Canyon: The wooded canyon, where one of California's earliest bowling alleys ran in the 1850s, stays cool on hot afternoons and gets muddy after winter storms.
Official sources and current conditions
- City of Larkspur: flood preparedness
- Golden Gate Ferry: Larkspur to San Francisco schedule
- Golden Gate Ferry: terminal locations and parking
- SMART: Larkspur station
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 | 77 | 61.8° / 48.5° | 6.2h | 6d | 7.74" | 16 |
| December 2024 | 66 | 57.5° / 47.1° | 4.6h | 16d | 12.08" | 10 |
| January 2025 | 81 | 59° / 43.6° | 6.7h | 7d | 0.32" | 19 |
| February 2025 | 75 | 60.2° / 45° | 6.8h | 7d | 11.7" | 18 |
| March 2025 | 80 | 60.9° / 46.1° | 8.3h | 3d | 3.44" | 17 |
| April 2025 | 92 | 66.8° / 47.2° | 10.3h | 1d | 0.42" | 28 |
| May 2025 | 95 | 74.3° / 50.8° | 12.4h | 1d | 0.17" | 31 |
| June 2025 | 96 | 74.9° / 50.8° | 12.6h | 4d | 0" | 30 |
| July 2025 | 95 | 74.6° / 53.5° | 12.1h | 5d | 0" | 31 |
| August 2025 | 94 | 82.5° / 55.9° | 11.5h | 1d | 0" | 31 |
| September 2025 | 92 | 77.8° / 58.4° | 10h | 1d | 0.08" | 28 |
| October 2025 | 87 | 70.8° / 54.1° | 8h | 6d | 1.06" | 26 |
| November 2025 | 74 | 62.2° / 50.7° | 5.4h | 13d | 4.58" | 12 |
| December 2025 | 57 | 53.1° / 45.5° | 3.8h | 21d | 7.23" | 4 |
| January 2026 | 74 | 59.5° / 46.9° | 6h | 10d | 7.2" | 17 |
| February 2026 | 75 | 62.5° / 47.9° | 6.5h | 6d | 9.04" | 14 |
| March 2026 | 95 | 76.3° / 53.5° | 9.6h | 0d | 0.05" | 30 |
| April 2026 | 87 | 67.2° / 49.5° | 9.4h | 2d | 4.29" | 22 |
| May 2026 | 92 | 71.5° / 51.8° | 11.8h | 6d | 0.74" | 29 |
| June 2026 | 95 | 76.1° / 54.1° | 12.6h | 3d | 0" | 30 |
| July 2026 | 93 | 79.2° / 55.1° | 11.9h | 2d | 0" | 31 |
| August 2026 | 93 | 78.1° / 54.6° | 11.2h | 3d | 0.02" | 31 |
| September 2026 | 93 | 77.4° / 55.3° | 10.2h | 2d | 0.36" | 29 |
| October 2026 | 92 | 76.6° / 53.2° | 8.5h | 2d | 0.35" | 28 |
Climate Trends
Average Temperature by Month
About the Larkspur climate charts
The temperature chart compares average monthly highs and lows at Larkspur, 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 Larkspur. 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 Larkspur, the warmest typical hour is 4 PM in August (82°F). The coldest is 7 AM in December (47°F).
- Fog: Fog or low cloud covers Larkspur in 44% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by 3 PM. April mornings are the least foggy (11%).
- Wind: From April through June, wind at Larkspur typically builds after 2 PM. In April it peaks around 6 PM, averaging 8 mph with 13% of those hours windy, while mornings average 5 mph.
- Cloud Cover: July middays are the clearest at Larkspur (12% average cloud cover), and December middays are the cloudiest (41%).
- Solar Radiation: The strongest typical sun at Larkspur comes at 1 PM in June, averaging 984 W/m².
How to read the hourly heatmaps for Larkspur
This heatmap shows how average temperature at Larkspur 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 Larkspur. 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 Larkspur 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 Larkspur 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 Larkspur 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 Larkspur
- October 2026 recap: October 2026 at Larkspur averaged a high of 77°F, 7°F warmer than the 1991-2020 normal of 70°F. It brought 0.35 in. of rain, compared with a normal of 1.44 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 34.6 in. of rain to Larkspur, 109% of the 31.8 in. normal.
Location Details
Larkspur weather questions
Everything you need to know about weather and visiting Larkspur
What is the weather like at Larkspur today?
It's 55°F at Larkspur right now, with a comfort score of 80 (great). Today's forecast high at Larkspur is 63°F, close to the mid November normal of 62°F. The best window today is 9 AM to noon, at about 54°F with a 2 mph wind (comfort 61).
What is the best month to visit Larkspur?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Larkspur are September, July, and August. The best hours are usually 10 AM to 1 PM in September, 10 AM to 1 PM in July, and 10 AM to 1 PM in August. The warm season lasts about 2.2 months, from Jul 26 to Oct 1, when the average high is 71°F or warmer. Highs peak around Sep 8 at about 73°F.
What are the warmest and coldest months at Larkspur?
September is the warmest month at Larkspur, with an average high of 73°F. January is the coldest, with an average low of 44°F.
When does the fog burn off at Larkspur?
Fog or low cloud covers Larkspur in 44% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by 3 PM. April mornings are the least foggy (11%).
When is it windiest at Larkspur?
From April through June, wind at Larkspur typically builds after 2 PM. In April it peaks around 6 PM, averaging 8 mph with 13% of those hours windy, while mornings average 5 mph.
How much rain does Larkspur get?
December is the wettest month (6.8 in.), out of about 31.8 in. a year. The rainy season runs from Oct 30 to Apr 15, when a day has at least a 20% chance of measurable rain. That stretch brings 88% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 34.6 in. of rain to Larkspur, 109% of the 31.8 in. normal.
How does Larkspur weather compare with Rodeo Beach?
Rodeo Beach, 7 miles away, runs about 23°F cooler than Larkspur on summer afternoons. It also has far more summer morning fog, 48% of morning hours compared with 18%.
What kind of place is Larkspur?
Larkspur stretches from Larkspur Landing, where Golden Gate ferries and SMART trains meet beside the mouth of Corte Madera Creek, back to its old downtown. Turn-of-the-century storefronts and early Queen Anne Victorians line Magnolia Avenue, once the main county road. That downtown is a historic district on the National Register of Historic Places. Baltimore Canyon, in the hills to the west, held one of California's earliest bowling alleys in the 1850s.
What is Larkspur weather like in November?
November at Larkspur averages a high of 62°F and a low of 48°F, with 3.3 in. of rain over about 8 rainy days. About 25% of morning hours are foggy. Afternoon wind averages 5 mph.
More about Larkspur 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.
- City of Larkspur, Flood Preparedness: Get Ready Now (accessed 2026-10-27)
- City of Larkspur, Historic District Walking Tour (accessed 2026-10-27)
- City of Larkspur, Larkspur Past and Present (accessed 2026-10-27)
- SMART, Larkspur station (accessed 2026-10-27)
- Visit Marin, Larkspur (accessed 2026-10-27)
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