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Simi Valley Forecast Summary
Currently in Simi Valley
Temperature, Humidity, Wind & Pressure
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Data captured from a Peet Bros. Ultimeter 2100
Local Weather Roundup
Simi Valley Forecast
Sunday, March 29, 2026
Today will be the last day of very warm temperatures, especially inland the the beaches, with fog common along the coast. Cooling will begin Monday, with near normal temperatures Tuesday through Thursday. Gusty onshore winds are predicted and light rain is possible. Expect warmer and drier conditions to follow Friday and Saturday with weak to moderate offshore winds. Today: Sunny. Warm and breezy , high near 87°F . Pollen level is rated "medium-high". Predicted air quality is moderate, AQI: 56 (for Simi Valley and Moorpark (courtesy of the VCAPCD)). Tonight: Clear. Light breezes, low around 50°F. Monday: Sunny and breezy, high of about 79°F. Monday night:Increasing clouds, then patchy fog developing. Light breezes, low near 55°F. Tuesday: Patchy fog, otherwise cloudy. Light breezes, high around 72°F. Tuesday night: Mostly cloudy. 20 percent chance of showers, low of about 54°F. Wednesday: Mostly sunny, high near 73°F. Wednesday night: Partly cloudy, low around 52°F. Thursday: Mostly sunny, high of about 71°F. Thursday night: Mostly clear and cool, low near 49°F. Friday: Sunny, high around 74°F. Friday night: Clear, low of about 52°F. Saturday: Sunny, high near 79°F. Simi Valley forecast updated daily. Based on data from the National Weather Service, San Diego office and from WeatherCurrents.Recently in
Simi Valley
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Simi Valley
Featured Photos
Cloud Stream: As seen near the Santa Susana pass, from the 118 freeway. Photo courtesy of Gabe Medrano.
Simi Valley
Weather News
Record-breaking March heat wave will peak Thursday-Friday
As an unusually intense area of high pressure sits over the Western U.S., t ... Posted March 19, 2026, 2:27 PMOther Weather Information
National Weather Service
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