Best year time to visit Iroquois County

General weather information about Iroquois County

Average annual temperature is 12.5 °C

Absolute maximum temperature: 35.5 °C

Absolute minimum temperature: -14.6 °C

Number of sunny days: 182 days

Number of rainy days: 175 days

Number of snow days: 8 days

Look at detailed online map of Iroquois County

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

Iroquois County air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)17.715.519.526.832.534.135.235.532.229.423.715.5
Average daytime temperature (°C)5.28.39.618.324.729.129.227.725.418.611.78.1
Average temperature (°C)1.12.44.111.218.022.423.622.520.013.76.14.1
Average night temperature (°C)-1.9-1.7-0.25.311.916.418.518.015.49.61.71.2
Absolute minimum temperature (°C)-13.2-14.6-10.6-2.82.79.714.411.59.3-2.6-9.8-7.7

Iroquois 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)9.610.711.913.314.515.014.813.812.511.19.99.3
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)3.47.76.79.311.112.312.310.99.16.77.14.5
Precipitation (mm)68829550881819699441282582
Sunny days101613161621111513132117
Rainy days1610181415920161717914
Snow days520000000100

Iroquois County - weather forecast by months

Iroquois County weather in januaryIroquois County weather in februaryIroquois County weather in marchIroquois County weather in aprilIroquois County weather in mayIroquois County weather in juneIroquois County weather in julyIroquois County weather in augustIroquois County weather in septemberIroquois County weather in octoberIroquois County weather in novemberIroquois County weather in december

Best time to visit Iroquois County:

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

  • May — 11.1(h)
  • June — 12.3(h)
  • July — 12.3(h)
  • August — 10.9(h)

The largest precipitation sum in Iroquois County is at

  • July — 196(mm)
  • October — 128(mm)

    • Weather forecast in the closest to Iroquois County admin centers

    Weather forecast in the closest towns to Iroquois County

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    Frequently asked questions

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