Currently 53°F in Simi Valley, California, USA
53°F
59°F / 53°F
calm
0.12"
Sunday, January 4, 2026 8:00 PM PST
Simi Valley Forecast Summary
Today Tomorrow Tuesday
Rain, Mostly cloudy Chance of showers, Partly sunny Chance of showers, Partly sunny
Rain, Mostly cloudy   Chance of showers, Partly sunny   Chance of showers, Partly sunny
High: 59°F High: 60°F High: 59°F
Low: 52°F Low: 49°F Low: 48°F
Currently in Simi Valley

Temperature, Humidity, Wind & Pressure

Time:  8:00 PM PST
Temperature:  53°F
Normal Temperature 54°F
Relative Humidity:  93%
Dewpoint:  51°F
Heat Index:  53°F
Wind Chill:  53°F
Wind:  calm
Gusts:  2 mph
Barometer:  29.97" HgPressure Change rising

Sunrise & Sunset

Sunrise Sunset Daylight
Today: 6:54 AM 4:54 PM 10:00
Tomorrow: 6:54 AM 4:55 PM 10:01
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

Today Time Normal Last Year
High: 59°F 2:05 PM 65°F 67°F
Low: 53°F 6:44 PM 46°F 42°F

Precipitation

60 Min. Today Month Season
0.01" 0.12" 1.32" 15.38"
Season began July 1, 2025
Past Season Precipitation Totals
Data captured from a Peet Bros. Ultimeter 2100
Local Weather Roundup
Simi Valley:
53°F
Simi Valley Forecast
Saturday, January 3, 2026
Warning Today's forecast is coming soon

Another storm system will arrive Saturday, bringing rain and high elevation snow through the weekend, along with gusty winds at times. Broader troughing over the West will keep a cooler weather pattern in place through next week with cool days and cold nights.

Today: Mostly cloudy and breezy. 100 percent chance of rain, heavy at times , high near 60°F .

Pollen level is rated "medium".

Predicted air quality is good, AQI: 44 (for Simi Valley and Moorpark (courtesy of the VCAPCD)).

Tonight: Mostly cloudy. Cool and breezy. 80 percent chance of rain, low around 52°F.

Sunday: Mostly cloudy and cool. Light breezes. 80 percent chance of rain, mainly in the afternoon, high of about 59°F.

Sunday night:Mostly cloudy. Cool and breezy. 60 percent chance of rain, mainly in the evening. Slight chance of thunderstorms, low near 49°F.

Monday: Partly sunny. 30 percent chance of showers, mainly in the afternoon, high around 60°F.

Monday night: Mostly cloudy and cool. 40 percent chance of showers, low of about 48°F.

Tuesday: Partly sunny and cool. Chance of showers, high near 59°F.

Tuesday night: Partly cloudy and cool. Slight chance of showers, low around 46°F.

Wednesday: Mostly sunny and cool. Slight chance of showers, high of about 62°F.

Wednesday night: Partly cloudy and cool. Slight chance of showers, low near 43°F.

Thursday: Sunny, high around 60°F.

Thursday night: Mostly clear and cool, low of about 42°F.

Friday: Sunny and cool, high near 60°F.

Simi Valley forecast updated daily. Based on data from the National Weather Service, San Diego office and from WeatherCurrents.
Recently in Simi Valley
Date High Low Ave. Prec.
January 3 58°F 55°F 56°F 0.44"
January 2 64°F 47°F 56°F 0.12"
January 1 64°F 48°F 56°F 0.64"
December 31 65°F 50°F 57°F 0.24"
December 30 67°F 62°F 64°F 0.00"
December 29 65°F 55°F 60°F 0.00"
December 28 64°F 48°F 57°F 0.00"
More Past Weather
Simi Valley Featured Photos
Cloud Stream
Cloud Stream: As seen near the Santa Susana pass, from the 118 freeway. Photo courtesy of Gabe Medrano.
Simi Valley Weather News
Storm Totals: December 23rd-27th, 2025

Several storm systems impacted Southern California during the week of Chris ...

Posted December 28, 2025, 11:18 AM
Other Weather Information

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