Simi Valley, California Weather:
Wednesday, September 23, 2026
Cloudy Weather
Day 95°
Night 63°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 23, 2025)
Rainy Night

Day

91°

Night

66°

Wind

4 mph

Precipitation

55 %