Simi Valley Forecast Summary
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Data captured from a Peet Bros. Ultimeter 2100
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Simi Valley Forecast
Saturday, July 5, 2025
![]() Seasonal temperatures will continue through Monday. High temperatures will jump upwards Tuesday and peak on Wednesday or Thursday under high pressure. Heat away from the coast is likely to be hazardous to outdoor workers and those without air conditioning. Above normal temperatures may last into early next weekend. Today: Sunny and warm. Light breezes , high near 89°F . Pollen level is rated "low-medium". Predicted air quality is moderate, AQI: 88 (for Simi Valley and Moorpark (courtesy of the VCAPCD)). Tonight: Mostly clear and breezy, low around 57°F. Sunday: Sunny and warm. Light breezes, high of about 84°F. Sunday night:Mostly clear. Light breezes, low near 56°F. Monday: Sunny and warm. Light breezes, high around 83°F. Monday night: Clear, low of about 57°F. Tuesday: Sunny and very warm, high near 90°F. Tuesday night: Mostly clear, low around 59°F. Wednesday: Mostly sunny and very warm, high of about 94°F. Wednesday night: Mostly clear, low near 60°F. Thursday: Sunny and very warm, high around 94°F. Thursday night: Mostly clear, low of about 60°F. Friday: Sunny and very warm, high near 90°F. Simi Valley forecast updated daily. Based on data from the National Weather Service, San Diego office and from WeatherCurrents.Recently in
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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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