Monticello Weather Forecast

    • 36
    • 55

    Mostly Sunny

    • 47
    • 56

    Rain

    • 33
    • 58

    Chance Rain

    • 22
    • 42

    Partly Sunny

    • 20
    • 37

    Partly Sunny

    • 26
    • 38

    Partly Sunny

Today 23 Nov Piatt

Sunny. Highs in the mid 50s. Northwest Winds around 5 Mph.

Tonight 23 Nov Piatt

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the mid 30s. South Winds around 5 Mph.

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Monticello Temperature Statistics

November Temperature

University of Illinois - Willard (15.5 miles)

  • Lowest 10 November, 2025

    19 °F

  • Average November

    45.5 °F

  • Highest 14 November, 2025

    75 °F

Climate (2020–Present)

University of Illinois - Willard (15.5 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    64.9 °F
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