Simi Valley, California Weather Forecast
Today in Simi Valley: clear skies with a high near 69°F and a low around 55°F. Rain chance 4%. No day tops a 20% rain chance through Thursday. Warming trend: highs climb from 69°F today to 79°F by Monday.
Forecast updated 1:05 AM PDT, Oct 23
Active Weather Alerts
7-Day Forecast for Simi Valley
Today 10/23
69°55°
Sat 10/24
77°55°
Sun 10/25
77°56°
Mon 10/26
79°57°
Tue 10/27
78°56°
Wed 10/28
74°56°
Thu 10/29
72°56°
Next 24 Hours
| Now | Sat12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  | | | | | | | | | | | | | | | | | | | | | | | |
| Temp | 56° | 55° | 56° | 56° | 57° | 57° | 56° | 56° | 55° | 57° | 63° | 68° | 72° | 74° | 76° | 77° | 77° | 75° | 74° | 71° | 67° | 64° | 61° | 59° |
| Rain | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Wind | NE 12 | NE 11 | NE 9 | ENE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | NE 10 | NE 11 | NE 15 | NE 14 | NE 11 | NE 9 | NE 8 | NNE 8 | NNE 7 | N 5 | NNW 4 | WNW 3 | NNW 3 | N 5 |
Growing Conditions
Growing degree days
4,364
since Apr 1, base 50°F
Rain, last 30 days
0.06 in
model analysis
Rain, year to date
7.48 in
since Jan 1
2-inch soil temperature
65°F
yesterday, daily average
Reference ET, last 7 days
1.34 in
FAO-56 grass reference
Through Oct 22. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Simi Valley →
Current Stats & Observations
NWS Forecast
About Simi Valley Weather
Simi Valley sits at about 876 feet above sea level in Ventura County, California. About 126,589 people live in the Simi Valley area. Official forecasts and warnings for the area come from the National Weather Service LOX office, and the nearest NEXRAD radar site is KVTX. The city is in USDA plant hardiness zone 10a, where the coldest winter night typically falls between 30 to 35°F. Freezing temperatures are rare here.
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