Monthly Historical AveragesGrass Valley, CA
Average Temperature
High
13°
Feels 12
Low
4°
Feels 1
Average Precipitation
9 Days
103.2mm
2.7cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, February 28, 2026
Day
20°Feels 20
Wind
8 km/h SW
Gust
12 km/h
Humidity
49%
P.O.P
30%
Night
5°Feels 3
Wind
6 km/h E
Gust
11 km/h
Humidity
100%
P.O.P
30%
Historical AveragesFeb 28
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity