Simi Valley Weather Forecast
- 69
- 98
Hot
- 71
- 99
Hot
- 68
- 97
Hot
- 69
- 93
Partly Sunny
- 66
- 87
Mostly Sunny
- 58
- 82
Mostly Sunny
Today 18 Mar Southeastern Ventura County Valleys
Sunny. Highs 94 to 100.
Tonight 18 Mar Southeastern Ventura County Valleys
Clear. Lows in the upper 50s and 60s except the mid to upper 70s in the Hills. West Winds around 15 Mph in the evening.
Simi Valley Temperature Statistics
March Temperature
Van Nuys, Van Nuys Airport (14.9 miles)
Lowest 11 March, 2026
50 °FAverage March
67.3 °FHighest 16 March, 2026
93.9 °F
Climate (2021–Present)
Van Nuys, Van Nuys Airport (14.9 miles)
Average Low 2021–2026
56.6 °FAverage 2021–2026
67.5 °FAverage High 2021–2026
79.5 °F