Best year time to visit Grundy County

General weather information about Grundy County

Average annual temperature is 12.1 °C

Absolute maximum temperature: 36.9 °C

Absolute minimum temperature: -16.7 °C

Number of sunny days: 190 days

Number of rainy days: 162 days

Number of snow days: 13 days

Look at detailed online map of Grundy County

* Weather data for Grundy County United States is based on climate observations for 2026 year

Grundy County air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.613.721.626.332.534.235.336.934.128.721.515.6
Average daytime temperature (°C)4.07.19.418.024.529.228.828.425.318.011.07.7
Average temperature (°C)0.11.53.810.917.722.423.422.719.913.35.73.8
Average night temperature (°C)-2.9-2.7-0.34.911.416.118.318.015.59.31.41.0
Absolute minimum temperature (°C)-16.5-16.7-11.8-2.11.99.914.011.59.6-2.3-10.0-7.7

Grundy County monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.610.611.913.314.515.114.813.812.511.19.99.3
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)3.37.56.69.310.712.312.010.88.56.97.54.4
Precipitation (mm)688311459108161621111211072866
Sunny days101712161919131715142315
Rainy days1491814121118141516615
Snow days721000000111

Grundy County - weather forecast by months

Grundy County weather in januaryGrundy County weather in februaryGrundy County weather in marchGrundy County weather in aprilGrundy County weather in mayGrundy County weather in juneGrundy County weather in julyGrundy County weather in augustGrundy County weather in septemberGrundy County weather in octoberGrundy County weather in novemberGrundy County weather in december

Best time to visit Grundy County:

The best time to visit Grundy County during the most sunny months:

  • May — 10.7(h)
  • June — 12.3(h)
  • July — 12.0(h)
  • August — 10.8(h)

The largest precipitation sum in Grundy County is at

  • March — 114(mm)
  • July — 162(mm)
  • August — 111(mm)
  • September — 121(mm)

    • Weather forecast in the closest to Grundy County admin centers

    Weather forecast in the closest towns to Grundy County

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    Frequently asked questions

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