Best year time to visit Grass Valley

General weather information about Grass Valley

Average annual temperature is 8.3 °C

Absolute maximum temperature: 37.4 °C

Absolute minimum temperature: -24.1 °C

Number of sunny days: 192 days

Number of rainy days: 119 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)7.46.411.728.030.231.135.937.429.825.614.09.4
Average daytime temperature (°C)0.41.65.513.723.924.131.429.422.815.27.65.5
Average temperature (°C)-4.6-3.7-1.06.115.717.022.821.014.98.21.80.6
Average night temperature (°C)-8.5-7.8-6.40.48.410.413.814.28.53.3-2.0-2.6
Absolute minimum temperature (°C)-24.1-23.0-13.2-6.42.73.68.19.63.2-8.1-8.3-9.4

Grass Valley monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.010.311.913.615.115.815.414.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)4.65.98.09.712.112.514.211.09.67.76.04.8
Precipitation (mm)38314241334806724304529
Sunny days131011121212311822181419
Rainy days376111918013811167
Snow days151114700000205

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:

  • May — 12.1(h)
  • June — 12.5(h)
  • July — 14.2(h)

Months with the longest average daylight duration in Grass Valley:

  • June — 15.8(h)
  • July — 15.4(h)

The largest precipitation sum in Grass Valley is at

  • June — 48(mm)
  • August — 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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    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.