Best year time to visit McLean County

General weather information about McLean County

Average annual temperature is 15.2 °C

Absolute maximum temperature: 36.1 °C

Absolute minimum temperature: -7.3 °C

Number of sunny days: 195 days

Number of rainy days: 169 days

Number of snow days: 1 day

Look at detailed online map of McLean County

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

McLean County air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)19.223.425.328.329.534.135.836.132.130.026.217.4
Average daytime temperature (°C)10.713.614.520.724.929.230.829.827.821.615.411.5
Average temperature (°C)6.07.48.513.818.922.725.624.621.916.29.36.3
Average night temperature (°C)2.53.03.68.113.516.921.020.116.811.84.92.6
Absolute minimum temperature (°C)-4.8-7.3-7.00.96.311.116.114.811.3-1.6-4.8-6.7

McLean County monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.012.011.010.09.0
Daylight mean duration (h)9.910.812.013.214.214.714.513.612.411.210.29.6
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.27.47.89.811.212.211.610.510.88.08.16.4
Precipitation (mm)11582169127754412517412743377
Sunny days15151517151791518202217
Rainy days16131513161322161211814
Snow days001000000000

McLean County - weather forecast by months

McLean County weather in januaryMcLean County weather in februaryMcLean County weather in marchMcLean County weather in aprilMcLean County weather in mayMcLean County weather in juneMcLean County weather in julyMcLean County weather in augustMcLean County weather in septemberMcLean County weather in octoberMcLean County weather in novemberMcLean County weather in december

Best time to visit McLean County:

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

  • June — 12.2(h)
  • July — 11.6(h)

The largest precipitation sum in McLean County is at

  • March — 169(mm)
  • April — 127(mm)
  • July — 125(mm)
  • August — 174(mm)

    • Weather forecast in the closest to McLean County admin centers

    Weather forecast in the closest towns to McLean County

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    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

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