Hot-summer Mediterranean climate
Climate Grass Valley - California
Annual high68ºF
Annual low43ºF
Precipitation53.74 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 53 | 33 | 8.88 | 1 |
| Feb | 55 | 34 | 9.02 | 3 |
| Mar | 58 | 37 | 8.06 | 3 |
| Apr | 63 | 40 | 4.02 | 0 |
| May | 71 | 46 | 2.38 | 0 |
| Jun | 80 | 52 | 0.62 | 0 |
| Jul | 87 | 57 | 0.01 | 0 |
| Aug | 87 | 56 | 0.16 | 0 |
| Sep | 81 | 51 | 0.86 | 0 |
| Oct | 71 | 44 | 2.84 | 0 |
| Nov | 59 | 37 | 6.57 | 0 |
| Dec | 52 | 33 | 10.32 | 2 |
- JanHigh 53ºFLow 33ºFPrecip 8.88 inch
- FebHigh 55ºFLow 34ºFPrecip 9.02 inch
- MarHigh 58ºFLow 37ºFPrecip 8.06 inch
- AprHigh 63ºFLow 40ºFPrecip 4.02 inch
- MayHigh 71ºFLow 46ºFPrecip 2.38 inch
- JunHigh 80ºFLow 52ºFPrecip 0.62 inch
- JulHigh 87ºFLow 57ºFPrecip 0.01 inch
- AugHigh 87ºFLow 56ºFPrecip 0.16 inch
- SepHigh 81ºFLow 51ºFPrecip 0.86 inch
- OctHigh 71ºFLow 44ºFPrecip 2.84 inch
- NovHigh 59ºFLow 37ºFPrecip 6.57 inch
- DecHigh 52ºFLow 33ºFPrecip 10.32 inch
Climate summary
What is the average weather in Grass Valley, California?
Grass Valley experiences a hot-summer climate with dry summers and wetter winters, typical of the region. Winters are cold and bring occasional snowfall, while summers are warm. Despite the dry summer months, the area receives high annual precipitation, primarily during the cooler, wetter season.
Grass Valley weather averages
Annual high68ºF
Annual low43ºF
Precipitation53.74 inch
Snowfall9 inch
Daily normals Grass Valley - California - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 52.7 | 32.5 | 0.30 | 0.30 | 0.00 | 0.00 |
| Jan 2 | 52.7 | 32.5 | 0.60 | 0.60 | 0.00 | 0.00 |
| Jan 3 | 52.8 | 32.6 | 0.89 | 0.89 | 0.00 | 0.00 |
| Jan 4 | 52.9 | 32.6 | 1.19 | 1.19 | 0.00 | 0.00 |
| Jan 5 | 53.0 | 32.7 | 1.49 | 1.49 | 0.00 | 0.00 |
| Jan 6 | 53.1 | 32.7 | 1.79 | 1.79 | 0.00 | 0.00 |
| Jan 7 | 53.1 | 32.8 | 2.09 | 2.09 | 0.10 | 0.10 |
| Jan 8 | 53.2 | 32.9 | 2.40 | 2.40 | 0.10 | 0.10 |
| Jan 9 | 53.3 | 32.9 | 2.72 | 2.72 | 0.10 | 0.10 |
| Jan 10 | 53.4 | 33.0 | 3.04 | 3.04 | 0.10 | 0.10 |
| Jan 11 | 53.4 | 33.0 | 3.37 | 3.37 | 0.10 | 0.10 |
| Jan 12 | 53.5 | 33.0 | 3.70 | 3.70 | 0.10 | 0.10 |
| Jan 13 | 53.6 | 33.1 | 4.02 | 4.02 | 0.10 | 0.10 |
| Jan 14 | 53.6 | 33.1 | 4.33 | 4.33 | 0.10 | 0.10 |
| Jan 15 | 53.7 | 33.2 | 4.64 | 4.64 | 0.20 | 0.20 |
| Jan 16 | 53.7 | 33.2 | 4.94 | 4.94 | 0.20 | 0.20 |
| Jan 17 | 53.8 | 33.2 | 5.22 | 5.22 | 0.20 | 0.20 |
| Jan 18 | 53.8 | 33.3 | 5.51 | 5.51 | 0.20 | 0.20 |
| Jan 19 | 53.9 | 33.3 | 5.79 | 5.79 | 0.30 | 0.30 |
| Jan 20 | 53.9 | 33.3 | 6.08 | 6.08 | 0.30 | 0.30 |
| Jan 21 | 53.9 | 33.3 | 6.37 | 6.37 | 0.30 | 0.30 |
| Jan 22 | 54.0 | 33.3 | 6.66 | 6.66 | 0.30 | 0.30 |
| Jan 23 | 54.0 | 33.3 | 6.94 | 6.94 | 0.40 | 0.40 |
| Jan 24 | 54.0 | 33.4 | 7.22 | 7.22 | 0.40 | 0.40 |
| Jan 25 | 54.0 | 33.4 | 7.50 | 7.50 | 0.40 | 0.40 |
| Jan 26 | 54.1 | 33.4 | 7.79 | 7.79 | 0.40 | 0.40 |
| Jan 27 | 54.1 | 33.4 | 8.09 | 8.09 | 0.50 | 0.50 |
| Jan 28 | 54.1 | 33.4 | 8.40 | 8.40 | 0.50 | 0.50 |
| Jan 29 | 54.1 | 33.4 | 8.70 | 8.70 | 0.60 | 0.60 |
| Jan 30 | 54.1 | 33.4 | 9.00 | 9.00 | 0.60 | 0.60 |
| Jan 31 | 54.2 | 33.4 | 9.30 | 9.30 | 0.70 | 0.70 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Grass Valley - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 88.0 | 51.1 | 0.00 |
| Oct 2 | 89.1 | 54.0 | 0.00 |
| Oct 3 | 91.0 | 54.0 | 0.00 |
| Oct 4 | 93.9 | 55.9 | 0.00 |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 91.9 | 57.0 | 0.00 |
| Oct 9 | 91.9 | 57.9 | 0.00 |
| Oct 10 | 93.0 | 57.9 | 0.00 |
| Oct 11 | 70.0 | 43.0 | 0.00 |
| Oct 12 | 64.9 | 41.0 | 0.00 |
| Oct 13 | 62.1 | 37.9 | 0.00 |
| Oct 14 | 70.0 | 37.0 | 0.00 |
| Oct 15 | 73.0 | 41.0 | 0.00 |
| Oct 16 | 84.0 | 41.0 | 0.00 |
| Oct 17 | 88.0 | 41.0 | 0.00 |
| Oct 18 | – | – | – |
| Oct 19 | 80.1 | 45.0 | 0.00 |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | – | – | – |
| Oct 23 | 57.0 | 45.0 | 0.22 |
| Oct 24 | 63.0 | 42.1 | 0.00 |
| Oct 25 | 66.9 | 42.1 | 0.00 |
| Oct 26 | 68.0 | 41.0 | 0.00 |
| Oct 27 | 64.0 | 37.9 | 0.00 |
| Oct 28 | 60.1 | 37.0 | 0.00 |
| Oct 29 | 63.0 | 37.0 | 0.00 |
| Oct 30 | 61.0 | 46.0 | 0.00 |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature93.9ºF · Oct 4
- Lowest max temperature57.0ºF · Oct 23
- Highest min temperature57.9ºF · Oct 9
- Lowest min temperature37.0ºF · Oct 14
Geo Grass Valley - California
Location
- Country
- United States
- State
- California
- County
- Nevada
- City
- Grass Valley
- Zip Code
- 95945
- Elevation
- 3117 ft
- Longitude
- -121.00
- Latitude
- 39.22
- ICAO
- –
- IATA
- –