Grass Valley picks up around 21 more inches of snow each winter.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Alta Sierra | Metric | Grass Valley |
|---|---|---|
| 257 days | Sunny daysclear or partly cloudy skies | 257 days |
| 57 in | Precipitationper year | 57 in |
| 84 days | Wet daysrain or snow per year | 84 days |
| 32 in | Snowfallper year | 53 in |
| 46 days | Hot daysabove 90 °F | 36 days |
| 50 days | Freezing nightsat or below 32 °F | 59 days |
| 57% | Humidityaverage relative | 56% |
| 57 °F | Average temperatureyear round | 56 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alta Sierra high | 54 | 55 | 59 | 64 | 72 | 81 | 89 | 89 | 84 | 73 | 60 | 52 |
| Grass Valley high | 53 | 55 | 58 | 63 | 71 | 80 | 88 | 87 | 82 | 72 | 59 | 52 |
| Alta Sierra low | 35 | 36 | 38 | 41 | 48 | 54 | 60 | 59 | 55 | 46 | 39 | 34 |
| Grass Valley 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. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alta Sierra | 9.7 | 9.5 | 8.8 | 4.7 | 3.2 | 0.9 | 0.1 | 0.1 | 0.5 | 2.9 | 5.9 | 10.4 |
| 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, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alta Sierra | 15 | 13 | 15 | 18 | 22 | 27 | 30 | 30 | 28 | 26 | 18 | 15 |
| Grass Valley | 15 | 13 | 15 | 18 | 22 | 27 | 30 | 30 | 28 | 26 | 18 | 15 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Alta Sierra vs another city
- Alta Sierra vs Lake of the Pines, CA
- Alta Sierra vs North Auburn, CA
- Alta Sierra vs Auburn, CA
- Alta Sierra vs Lincoln, CA
- Alta Sierra vs Loomis, CA
- Alta Sierra vs New York, NY
- Alta Sierra vs Los Angeles, CA
- Alta Sierra vs Chicago, IL
- Alta Sierra vs Houston, TX
- Alta Sierra vs Phoenix, AZ
- Alta Sierra vs Philadelphia, PA
Grass Valley vs another city
- 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
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. 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).