Updated October 2026
Henry Cowell Redwoods State Park: Weather by Month and When to Go
Henry Cowell Redwoods State Park is a state park in California. The USGS Protected Areas Database maps about 4,700 acres under its name. Average highs range from 64°F in December to 90°F in August.
Average highs sit between 60°F and 80°F in November through May. They run above 80°F in June through October. The figures are NOAA climate normals for 1991–2020, measured at a weather station 2.5 miles from the park.
Warmest average high
90°F
August
Coldest average low
37°F
December and January
Most precipitation
10.4 in
December and January
Longest days
14.5 h
June
Henry Cowell Redwoods State Park weather by month
| Month | Average high | Average low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 65°F | 37°F | 10.4 in | 0.0 in | 9.7 h |
| February | 67°F | 39°F | 9.7 in | 0.1 in | 10.6 h |
| March | 71°F | 41°F | 7.0 in | 0.0 in | 11.7 h |
| April | 75°F | 42°F | 3.3 in | 0.0 in | 13.0 h |
| May | 80°F | 46°F | 1.2 in | 0.0 in | 14.0 h |
| June | 86°F | 49°F | 0.2 in | 0.0 in | 14.5 h |
| July | 88°F | 51°F | 0.0 in | 0.0 in | 14.3 h |
| August | 90°F | 51°F | 0.0 in | 0.0 in | 13.4 h |
| September | 89°F | 49°F | 0.1 in | 0.0 in | 12.2 h |
| October | 83°F | 44°F | 2.2 in | 0.0 in | 11.0 h |
| November | 71°F | 40°F | 5.0 in | 0.0 in | 10.0 h |
| December | 64°F | 37°F | 10.4 in | 0.0 in | 9.5 h |
Temperature, precipitation and snowfall figures are NOAA climate normals for 1991–2020 from station USC00040673, the nearest station with a complete set of temperature normals, 2.5 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. The acreage is what the USGS Protected Areas Database maps under the park's name. The state's own figure can differ, because the database may hold part of a park under another name.
What the averages show
- Temperature. August is the warmest month, with an average high of 90°F and an average low of 51°F. December and January are the coldest months, each with an average low of 37°F.
- Precipitation. December and January are the wettest months, each averaging 10.4 inches of precipitation, and July and August are the driest, at 0.0 inches each. An average year brings about 49.5 inches in total.
- Snowfall. The station averages 0.1 inches of snow a year, with the most in February (0.1 inches).
- Daylight. Days run from about 9.5 hours of daylight in December to 14.5 hours in June.
Camping, trails, maps and fees
Whether Henry Cowell Redwoods 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 Henry Cowell Redwoods 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 Henry Cowell Redwoods State Park
Where to stay near Henry Cowell Redwoods State Park
Hotels, cabins and vacation rentals near Henry Cowell Redwoods State Park, with live availability and prices.
Top-rated places to stay near Henry Cowell Redwoods State Park
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Frequently Asked Questions
August is the warmest month, with an average high of 90°F and an average low of 51°F. December and January are the coldest months, each with an average low of 37°F. These are NOAA 1991–2020 climate normals from a weather station 2.5 miles from the park.
Average highs sit between 60°F and 80°F in November through May. They run above 80°F in June through October.
December and January are the wettest months, each averaging 10.4 inches of precipitation, and July and August are the driest, at 0.0 inches each. An average year brings about 49.5 inches in total. Snowfall averages 0.1 inches a year, with the most in February.
Days run from about 9.5 hours of daylight in December to 14.5 hours in June. The hours are calculated for the park's latitude.
Nearest National Park Service sites
- Eugene O'Neill National Historic Site54 miles away
- San Francisco Maritime National Historical Park56 miles away
- Fort Point National Historic Site57 miles away
Nearby state parks
- Wilder Ranch State Park4 miles away
- Natural Bridges State Beach7 miles away
- New Brighton State Beach10 miles away
- The Forest of Nisene Marks State Park11 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 and acreage; the official California state park listing for the park's name.