Allerton Weather Forecast

    • 68
    • 90

    Chance Thunderstorms

    • 65
    • 85

    Patchy Smoke

    • 72
    • 88

    Partly Sunny

    • 63
    • 89

    Slight Chance Thunderstorms

    • 57
    • 79

    Mostly Sunny

    • 61
    • 80

    Partly Sunny

Today 18 Jul Vermilion

Sunny. A chance of Showers and Thunderstorms this afternoon. Highs around 90. West Winds 10 to 15 Mph. Chance of rain 50 percent. Heat index Values up to 102.

Tonight 18 Jul Vermilion

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the upper 60s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight. Chance of rain 50 percent.

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Allerton Temperature Statistics

July Temperature

University of Illinois - Willard (19.3 miles)

  • Lowest 8 July, 2026

    65.6 °F

  • Average July

    78.2 °F

  • Highest 2 July, 2026

    92.6 °F

Climate (2021–2026)

University of Illinois - Willard (19.3 miles)

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  • Average Low 2021–2026

    44.3 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    65.2 °F
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