Simi Valley Weather Pages - Current and Past Weather, Forecasts and News for Simi Valley, California

Currently 70°F in Simi Valley, California, USA

Monday, May 18, 2026 10:11 AM PDT

Simi Valley Forecast Summary

Today	Tomorrow	Wednesday

Sunny, Breezy	Sunny, Breezy	Sunny
High: 80°F	High: 84°F	High: 85°F
Low: 51°F	Low: 52°F	Low: 54°F

Complete Forecast Text Below

Currently in Simi Valley

Temperature, Humidity, Wind & Pressure

Time:	10:11 AM PDT
Temperature:	70°F
Normal Temperature :	66°F
Relative Humidity:	25%
Dewpoint:	32°F
Heat Index:	75°F
Wind Chill:	70°F
Wind:	11 mph E (98°)
Gusts:	26 mph
Barometer:	29.85" Hg rising

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	5:46 AM	7:44 PM	13:58
Tomorrow:	5:45 AM	7:45 PM	14:00
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	70°F	10:11 AM	74°F	72°F
Low:	51°F	6:29 AM	53°F	49°F

Precipitation

60 Min.	Today	Month	Season
0.00"	0.00"	0.00"	20.68"
Season began July 1, 2025
Past Season Precipitation Totals

Data captured from a Peet Bros. Ultimeter 2100

Local Weather Roundup

Simi Valley:

70°F

Complete Local Weather Roundup

Simi Valley Forecast

Sunday, May 17, 2026

Today's forecast is coming soon

Warmer temperatures are expected this coming week with some locally breezy Santa Ana winds on Monday. The warmest day will be Wednesday with slow cooling the rest of the week along with a return of night and morning low clouds and fog.

Today: Mostly sunny and breezy , high near 72°F .

Pollen level is rated "medium".

Predicted air quality is good, AQI: 50 (for Simi Valley and Moorpark (courtesy of the VCAPCD)).

Tonight: Mostly clear. Light breezes, low around 51°F.

Monday: Sunny and warm. Offshore breezes, high of about 80°F.

Monday night:Mostly clear. Offshore breezes, low near 52°F.

Tuesday: Sunny and warm. Afternoon breezes, high around 84°F.

Tuesday night: Mostly clear. Light breezes, low of about 54°F.

Wednesday: Sunny and warm, high near 85°F.

Wednesday night: Mostly clear, low around 55°F.

Thursday: Sunny and warm, high of about 82°F.

Thursday night: Mostly clear, low near 54°F.

Friday: Sunny and warm, high around 80°F.

Friday night: Mostly clear, low of about 53°F.

Saturday: Sunny, high near 78°F.

Complete Forecast Page

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.
May 17	72°F	52°F	61°F	0.00"
May 16	73°F	55°F	63°F	0.00"
May 15	68°F	52°F	60°F	0.00"
May 14	73°F	52°F	62°F	0.00"
May 13	74°F	55°F	63°F	0.00"
May 12	74°F	53°F	63°F	0.00"
May 11	90°F	53°F	71°F	0.00"
More Past Weather

Simi Valley Featured Photos

Cloud Stream: As seen near the Santa Susana pass, from the 118 freeway. Photo courtesy of Gabe Medrano.

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Simi Valley Weather News

Storm Totals: May 4th-5th, 2026

A low pressure system off the Central California coast brought unsettled we ...

Posted May 7, 2026, 10:22 PM

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Other Weather Information

Temperature, Humidity, Wind & Pressure

Sunrise & Sunset

Extreme Temperatures

Precipitation

National Weather Service

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