Spring
71°F / 45°F
March, April, May: about 7.6 in of rain.
Plan a visit
Best time to visit Santa Rosa
July, August, September bring mild highs and the least rain.
Best time to visit
July · August · September
Highs between 65°F and 85°F with the least rain of the year. Hottest: September (84°F). Coldest nights: December (38°F). Wettest: December.
Santa Rosa by season
Month-by-month planner
| Month | Weather | High / low | Rain | Local guides |
|---|---|---|---|---|
| January | Wet | 60°F / 38°F | 5.8 in | |
| February | Wet | 64°F / 40°F | 6.4 in | Valentine’s Day |
| March | Wet | 67°F / 42°F | 4.3 in | St. Patrick’s Day |
| April | Great | 71°F / 44°F | 2.0 in | |
| May | Great | 75°F / 48°F | 1.3 in | |
| June | Great | 80°F / 51°F | 0.30 in | Fourth of July |
| July | Great | 82°F / 52°F | 0.00 in | Fourth of July |
| August | Great | 83°F / 53°F | 0.00 in | |
| September | Great | 84°F / 51°F | 0.10 in | Halloween |
| October | Great | 79°F / 48°F | 1.6 in | Halloween |
| November | Wet | 67°F / 42°F | 3.2 in | Halloween, Thanksgiving, Christmas |
| December | Wet | 59°F / 38°F | 6.5 in | Christmas, New Year’s Eve |
“Great” means highs between 65°F and 85°F with fewer than 10 wet days. Averages are NOAA’s 1991–2020 normals for the Santa Rosa station, not a forecast.
Around Santa Rosa
See Santa Rosa before you go
A DRIVE AROUND TOWN
Santa Rosa - California - 4K Downtown Drive
Recorded footage by Mileage Mike Travels. Not live road conditions.
Watch on YouTube ↗
THINGS TO DO · YOUTUBE SHORT
Fun Things to Do in Santa Rosa, Sonoma County, California
An activity Short shared by Sonoma County.
Watch on YouTube ↗Questions
What is the best month to visit Santa Rosa?
July, August, September: highs between 65°F and 85°F with the least rain.
What is the hottest month in Santa Rosa?
September, averaging 84°F highs.
What is the coldest month in Santa Rosa?
December, with average lows of 38°F.
What is the rainiest month in Santa Rosa?
December, averaging 6.5 in of precipitation.
When are the big holidays in Santa Rosa?
See the local guides: Halloween (October), Thanksgiving (November), Christmas lights (late November to December), New Year’s Eve.