Monticello Weather Forecast

    • 61
    • 78

    Slight Chance Thunderstorms

    • 60
    • 82

    Sunny

    • 56
    • 84

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

    • 61
    • 77

    Partly Sunny

    • 63
    • 80

    Slight Chance Thunderstorms

Today 9 Aug Piatt

Mostly cloudy in the morning and early afternoon then becoming partly sunny. A 20 percent chance of Showers and Thunderstorms in the morning. Highs in the upper 70s. Northeast Winds around 10 Mph in the morning becoming light in the afternoon.

Tonight 9 Aug Piatt

Partly cloudy. Patchy fog after midnight. Lows around 60. Light wind.

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Monticello Temperature Statistics

August Temperature

University of Illinois - Willard (15.5 miles)

  • Lowest 2 August, 2022

    66.9 °F

  • Average August

    76.6 °F

  • Highest 3 August, 2022

    90 °F

Climate (2010–Present)

University of Illinois - Willard (15.5 miles)

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  • Average Low 2010–Present

    43.8 °F

  • Average 2010–Present

    53.3 °F

  • Average High 2010–Present

    63 °F
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