Climate almanac
Simi Valley
California, US · 34.27°, -118.78°
What is the climate like in Simi Valley?
Simi Valley is warmest in August, when daily highs average 85°F (30°C), and coolest in January, when lows fall to about 46°F (8°C). The wettest month is typically January and the driest is July; the year sees roughly 17 in of precipitation.
- Warmest monthAugust — average high 85°F (30°C)
- Coolest monthJanuary — average low 46°F (8°C)
- Wettest monthJanuary (3.6 in)
- Driest monthJuly (0.0 in)
- Annual precipitation17 in