Best year time to visit Grass Valley

General weather information about Grass Valley

Average annual temperature is 8.3 °C

Absolute maximum temperature: 37.0 °C

Absolute minimum temperature: -17.4 °C

Number of sunny days: 219 days

Number of rainy days: 92 days

Number of snow days: 54 days

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* Weather data for Grass Valley United States is based on climate observations for 2026 year

Grass Valley air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.05.05.322.125.627.637.031.429.423.718.811.6
Average daytime temperature (°C)-2.5-0.90.08.618.021.732.628.123.116.89.46.2
Average temperature (°C)-5.7-4.9-3.33.712.916.126.121.916.810.43.70.9
Average night temperature (°C)-8.6-7.8-6.3-0.57.710.118.715.29.94.3-1.1-2.8
Absolute minimum temperature (°C)-17.4-14.5-15.2-10.0-1.64.615.99.83.4-7.3-9.3-9.0

Grass Valley monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.712.013.314.414.914.713.712.511.210.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.78.48.511.812.312.813.111.510.89.48.07.3
Precipitation (mm)67187311431663667111512
Sunny days121811231113281817242321
Rainy days4243201731313742
Snow days15816400000038

Grass Valley - weather forecast by months

Grass Valley weather in januaryGrass Valley weather in februaryGrass Valley weather in marchGrass Valley weather in aprilGrass Valley weather in mayGrass Valley weather in juneGrass Valley weather in julyGrass Valley weather in augustGrass Valley weather in septemberGrass Valley weather in octoberGrass Valley weather in novemberGrass Valley weather in december

Best time to visit Grass Valley:

The best time to visit Grass Valley during the most sunny months:

  • June — 12.8(h)
  • July — 13.1(h)

The largest precipitation sum in Grass Valley is at

  • January — 67(mm)
  • March — 73(mm)
  • May — 43(mm)
  • September — 67(mm)

    • Weather forecast in the closest to Grass Valley admin centers

    Weather forecast in the closest towns to Grass Valley

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    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

    When is the best time to visit Grass Valley?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Grass Valley.
    What is the weather like in Grass Valley?
    See average temperature, rainfall and daylight hours for Grass Valley by month in the table above.
    How many sunny days does Grass Valley have?
    The monthly weather statistics above show sunshine and rainfall patterns for Grass Valley throughout the year.