Spring
78°F / 49°F
March, April, May: about 3.9 in of rain.
Plan a visit
Best time to visit Simi Valley
April, May, November bring mild highs and the least rain.
Best time to visit
April · May · November
Highs between 65°F and 85°F with the least rain of the year. Hottest: August (97°F). Coldest nights: December (42°F). Wettest: February.
Simi Valley by season
Month-by-month planner
| Month | Weather | High / low | Rain | Local guides |
|---|---|---|---|---|
| January | Wet | 70°F / 43°F | 3.7 in | |
| February | Wet | 70°F / 44°F | 4.6 in | Valentine’s Day |
| March | Great | 74°F / 46°F | 2.7 in | St. Patrick’s Day |
| April | Great | 78°F / 48°F | 0.80 in | |
| May | Great | 82°F / 53°F | 0.40 in | |
| June | Hot | 89°F / 57°F | 0.10 in | Fourth of July |
| July | Very hot | 95°F / 61°F | 0.00 in | Fourth of July |
| August | Very hot | 97°F / 61°F | 0.00 in | |
| September | Hot | 94°F / 59°F | 0.10 in | Halloween |
| October | Good | 85°F / 53°F | 0.60 in | Halloween |
| November | Great | 76°F / 46°F | 0.80 in | Halloween, Thanksgiving, Christmas |
| December | Great | 69°F / 42°F | 2.7 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 Woodland Hills Pierce College station, not a forecast.
Around Simi Valley
See Simi Valley before you go
THINGS TO DO · YOUTUBE SHORT
Things to Do in Simi Valley!
A local activity Short shared by Teresa in California.
Watch on YouTube ↗
THINGS TO DO · YOUTUBE SHORT
Top Things to do in Simi Valley.
A local activity Short shared by Lian Turnbough.
Watch on YouTube ↗Questions
What is the best month to visit Simi Valley?
April, May, November: highs between 65°F and 85°F with the least rain.
What is the hottest month in Simi Valley?
August, averaging 97°F highs.
What is the coldest month in Simi Valley?
December, with average lows of 42°F.
What is the rainiest month in Simi Valley?
February, averaging 4.6 in of precipitation.
When are the big holidays in Simi Valley?
See the local guides: Halloween (October), Thanksgiving (November), Christmas lights (late November to December), New Year’s Eve.