Climate almanac
Grass Valley
California, United States · 39.22°, -121.06°
What is the weather like in Grass Valley in May?
In May, Grass Valley is typically 75°F (24°C) during the day and 50°F (10°C) at night. The month brings about 2.6 in (65 mm) of precipitation in total. Snowfall averages about 0.5 in (14 mm) over the month.
- Average high75°F (24°C)
- Average low50°F (10°C)
- Precipitation2.6 in (65 mm)
- Clear or mostly clear days19
- Snowfall0.5 in (14 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)