Allerton Weather Forecast

    • 72
    • 93

    Mostly Sunny

    • 73
    • 96

    Partly Sunny

    • 73
    • 98

    Hot

    • 74
    • 98

    Hot

    • 70
    • 96

    Chance Thunderstorms

    • 66
    • 88

    Chance Thunderstorms

Today 15 Aug Vermilion

Mostly sunny. Near steady temperature in the lower 90s. Southwest Winds around 5 Mph. Heat index Values up to 105.

Tonight 15 Aug Vermilion

Mostly clear. A slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Light and variable Winds, becoming south around 5 Mph after midnight. Chance of rain 20 percent.

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Allerton Temperature Statistics

August Temperature

University of Illinois - Willard (19.3 miles)

  • Lowest 3 August, 2025

    56.6 °F

  • Average August

    76.2 °F

  • Highest 8 August, 2025

    90.6 °F

Climate (2020–Present)

University of Illinois - Willard (19.3 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    64.7 °F
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