Updated October 2026
Mount Tamalpais State Park: Weather by Month and When to Go
Mount Tamalpais State Park is a state park in California. Average highs range from 56°F in December to 83°F in July and August.
Average highs sit between 60°F and 80°F in February through June and October through November. They run above 80°F in July through September and below 60°F in December and January. The figures are NOAA climate normals for 1991–2020, measured at a weather station 5.3 miles from the park.
Warmest average high
83°F
July and August
Coldest average low
42°F
December and January
Most precipitation
9.8 in
December
Longest days
14.6 h
June
Mount Tamalpais State Park weather by month
| Month | Average high | Average low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 57°F | 42°F | 8.8 in | 9.7 h |
| February | 61°F | 43°F | 8.7 in | 10.6 h |
| March | 65°F | 44°F | 6.0 in | 11.7 h |
| April | 69°F | 46°F | 2.6 in | 13.0 h |
| May | 74°F | 50°F | 1.4 in | 14.1 h |
| June | 80°F | 52°F | 0.4 in | 14.6 h |
| July | 83°F | 53°F | 0.0 in | 14.4 h |
| August | 83°F | 54°F | 0.1 in | 13.5 h |
| September | 82°F | 53°F | 0.1 in | 12.2 h |
| October | 76°F | 50°F | 2.0 in | 11.0 h |
| November | 64°F | 45°F | 4.6 in | 9.9 h |
| December | 56°F | 42°F | 9.8 in | 9.4 h |
Temperature and precipitation figures are NOAA climate normals for 1991–2020 from station USC00044500, the nearest station with a complete set of temperature normals, 5.3 miles from the park. Conditions in the park can differ from the station's, most of all where the two sit at different elevations. Daylight is calculated for the park's latitude at the middle of each month.
What the averages show
- Temperature. July and August are the warmest months, each with an average high of 83°F. December and January are the coldest months, each with an average low of 42°F.
- Precipitation. December is the wettest month, averaging 9.8 inches of precipitation, and July is the driest, at 0.0 inches. An average year brings about 44.5 inches in total.
- Snowfall. The station's snowfall normal is 0.0 inches in every month.
- Daylight. Days run from about 9.4 hours of daylight in December to 14.6 hours in June.
Camping, trails, maps and fees
Whether Mount Tamalpais State Park has camping or cabins, where its trails run, when it opens and what it charges are all published by the agency that runs the park. Its official page is the place to check before a trip.
Official Mount Tamalpais State Park page
For the forecast rather than the averages, the National Weather Service issues a point forecast for the park's location.
National Weather Service forecast for Mount Tamalpais State Park
Where to stay near Mount Tamalpais State Park
Hotels, cabins and vacation rentals near Mount Tamalpais State Park, with live availability and prices.
Top-rated places to stay near Mount Tamalpais State Park
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Frequently Asked Questions
July and August are the warmest months, each with an average high of 83°F. December and January are the coldest months, each with an average low of 42°F. These are NOAA 1991–2020 climate normals from a weather station 5.3 miles from the park.
Average highs sit between 60°F and 80°F in February through June and October through November. They run above 80°F in July through September and below 60°F in December and January.
December is the wettest month, averaging 9.8 inches of precipitation, and July is the driest, at 0.0 inches. An average year brings about 44.5 inches in total. The station's snowfall normal is 0.0 inches in every month.
Days run from about 9.4 hours of daylight in December to 14.6 hours in June. The hours are calculated for the park's latitude.
Nearest National Park Service sites
- Muir Woods National Monument1 mile away
- Golden Gate National Recreation Area2 miles away
- Fort Point National Historic Site9 miles away
Nearby state parks
- China Camp State Park10 miles away
- Samuel P. Taylor State Park11 miles away
- Thornton State Beach15 miles away
- Gray Whale Cove State Beach23 miles away
Distances are measured in a straight line from the park, so the drive is longer.
Sources: NOAA NCEI U.S. Climate Normals 1991–2020; USGS Protected Areas Database for location; the official California state park listing for the park's name.