Grass Valley, CA weather and climate
Nevada County, CA · population 14,126 · about 2,434 ft elevation
Everything below is a 30 year average for 1991-2020, computed from daily climate history at Grass Valley's own coordinates.
The year at a glance
- Sunny days
- 257
- clear or partly cloudy, per year
- Precipitation
- 57 in
- per year
- Wet days
- 84
- rain or snow per year
- Snowfall
- 53 in
- per year
- Hot days
- 36
- above 90 °F
- Freezing nights
- 59
- at or below 32 °F
- Humidity
- 56%
- average relative
- Average temperature
- 56 °F
- year round
Monthly temperatures
Average daily high and low for each month, in °F.
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily high | 53 | 55 | 58 | 63 | 71 | 80 | 88 | 87 | 82 | 72 | 59 | 52 |
| Daily low | 33 | 34 | 37 | 40 | 47 | 53 | 58 | 57 | 53 | 45 | 37 | 33 |
Monthly precipitation
Total rain plus melted snow for each month, in inches.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grass Valley | 9.7 | 9.5 | 8.8 | 4.7 | 3.2 | 0.9 | 0.1 | 0.1 | 0.5 | 2.9 | 5.9 | 10.4 |
Monthly sunny days
Days each month with clear or partly cloudy skies.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grass Valley | 15 | 13 | 15 | 18 | 22 | 27 | 30 | 30 | 28 | 26 | 18 | 15 |
Compare Grass Valley with another city
Nearby cities and popular picks. Any two cities can be compared from the home page.
- Grass Valley vs Alta Sierra, CA
- Grass Valley vs Lake of the Pines, CA
- Grass Valley vs North Auburn, CA
- Grass Valley vs Auburn, CA
- Grass Valley vs Linda, CA
- Grass Valley vs Lincoln, CA
- Grass Valley vs New York, NY
- Grass Valley vs Los Angeles, CA
- Grass Valley vs Chicago, IL
- Grass Valley vs Houston, TX
- Grass Valley vs Phoenix, AZ
- Grass Valley vs Philadelphia, PA
About this data
Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).