Currently 66°F in Simi Valley, California, USA
66°F
67°F / 66°F
calm
0.00"
Friday, October 2, 2026 2:32 AM PDT
Simi Valley Forecast Summary
Today Tomorrow Sunday
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High: N/A High: N/A High: N/A
Low: N/A Low: N/A Low: N/A
Currently in Simi Valley

Temperature, Humidity, Wind & Pressure

Time:  2:32 AM PDT
Temperature:  66°F
Normal Temperature :  62°F
Relative Humidity:  58%
Dewpoint:  50°F
Heat Index:  66°F
Wind Chill:  66°F
Wind:  calm
Gusts:  1 mph
Barometer:  29.82" HgPressure Change rising

Sunrise & Sunset

Sunrise Sunset Daylight
Today: 6:49 AM 6:37 PM 11:48
Tomorrow: 6:50 AM 6:36 PM 11:46
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

Today Time Normal Last Year
High: 67°F 12:01 AM 85°F 81°F
Low: 66°F 2:32 AM 58°F 56°F

Precipitation

60 Min. Today Month Season
0.00" 0.00" 0.00" 0.60"
Season began July 1, 2026
Past Season Precipitation Totals
Data captured from a Peet Bros. Ultimeter 2100
Local Weather Roundup
Simi Valley:
66°F
Simi Valley Forecast
Sunday, September 20, 2026
Alert Forecast not current

A weak upper level trough will move over the areas today into Monday, cooling temperatures slightly and increasing the marine layer stratus. A warming trend will begin Tuesday and peak on Thursday, with highs five to ten degrees above normal.

Today: Partly sunny and warm. Light breezes , high near 82°F .

Pollen level is rated "medium".

Predicted air quality is moderate, AQI: 66 (for Simi Valley and Moorpark (courtesy of the VCAPCD)).

Tonight: Mostly cloudy. Light breezes, low around 58°F.

Monday: Low clouds early, becoming mostly sunny. Afternoon breezes, high of about 80°F.

Monday night:Partly cloudy. Light breezes, low near 57°F.

Tuesday: Sunny and warm. Light breezes, high around 83°F.

Tuesday night: Clear. Light breezes, low of about 60°F.

Wednesday: Sunny and very warm, high near 90°F.

Wednesday night: Mostly clear, low around 65°F.

Thursday: Sunny and very warm, high of about 90°F.

Thursday night: Mostly clear, low near 65°F.

Friday: Sunny and warm, high around 88°F.

Friday night: Mostly clear, low of about 64°F.

Saturday: Sunny and warm, high near 86°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.
October 1 89°F 59°F 72°F 0.00"
September 30 87°F 60°F 71°F 0.00"
September 29 87°F 59°F 73°F 0.00"
September 28 80°F 58°F 68°F 0.00"
September 27 88°F 63°F 74°F 0.00"
September 26 90°F 62°F 75°F 0.00"
September 25 85°F 61°F 72°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
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Other Weather Information

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