Climate almanac
Simi Valley
California, United States · 34.27°, -118.78°
What is the weather like in Simi Valley in August?
In August, Simi Valley is typically 85°F (30°C) during the day and 66°F (19°C) at night. The month brings about 0.3 in (9 mm) of precipitation in total.
- Average high85°F (30°C)
- Average low66°F (19°C)
- Precipitation0.3 in (9 mm)
- Clear or mostly clear days26
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)