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Simi Valley, California Weather:
Tuesday, March 17, 2026
Sunny Weather
Day 66°
Night 43°
Precipitation 49 %
Wind 8 mph
Weather Forecast History
Last Year's Weather on This Day (March 17, 2025)
Partly Sunny with Showers

Day

61°

Night

37°

Wind

11 mph

UV Index

4

Precipitation

55 %