Climate almanac
Simi Valley
California, United States · 34.27°, -118.78°
What is the weather like in Simi Valley in May?
In May, Simi Valley is typically 72°F (22°C) during the day and 55°F (13°C) at night. The month brings about 0.5 in (12 mm) of precipitation in total.
- Average high72°F (22°C)
- Average low55°F (13°C)
- Precipitation0.5 in (12 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)