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City of Simi Valley, CASimi Valley, CA 7-Day Night Weather Forecast
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Simi Valley, CA Weather Forecast
Simi Valley, CA Weather Forecast Date: 1129 AM PDT Fri Sep 04 2026
The area/counties/county of: Southeastern Ventura County Valleys, including: Moorpark, Newbury Park, Simi Valley, and Thousand Oaks.or toggle through each period.
Today... Sunny. Highs in the mid 70s to mid 80s. Southwest winds around 15 mph in the afternoon.
Tonight... Mostly clear. Lows in the mid to upper 50s.
Saturday... Sunny. Highs in the upper 70s to mid 80s.
Saturday Night... Mostly clear in the evening then mostly cloudy. Lows in the upper 50s to mid 60s.
Sunday... Mostly cloudy with a 50% chance of showers. Highs in the mid 70s to lower 80s.
Sunday Night... Mostly clear. Lows around 60.
Labor Day... Sunny. Highs in the upper 70s and 80s.
Monday Night... Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.
Tuesday... Partly cloudy. A 20% chance of showers in the afternoon. Highs in the 80s to around 90.
Tuesday Night... Partly cloudy with a slight chance of showers in the evening, becoming mostly cloudy with a chance of showers after midnight. Lows in the lower to mid 60s. Chance of precipitation 30%.
Wednesday... Mostly cloudy with a 20% chance of showers in the morning, becoming partly cloudy in the afternoon. Highs in the 80s to lower 90s.
Wednesday Night... Partly cloudy. Lows in the mid 60s.
POP = Probability of Precipitation
Simi Valley Radar Loop
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