Monticello Weather Forecast

    • -2
    • 14

    Decreasing Clouds

    • 4
    • 11

    Mostly Sunny

    • 23
    • 38

    Mostly Sunny

    • 31
    • 48

    Partly Sunny

    • 39
    • 50

    Mostly Cloudy

    • 20
    • 50

    Partly Sunny

    • 32
    • 39

    Mostly Cloudy

Today 13 Dec Lewis

Snow likely. Snow accumulation around an inch. Much cooler. Near steady temperature around 11. North Winds around 10 Mph with Gusts up to 20 Mph. Chance of snow 70 percent. Wind chill Values as low as 4 below.

Tonight 13 Dec Lewis

Mostly clear. Colder with Lows around 1 below. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 19 below.

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Monticello Temperature Statistics

December Temperature

Keokuk Municipal Airport (28 miles)

  • Lowest 4 December, 2025

    3.2 °F

  • Average December

    26 °F

  • Highest 9 December, 2025

    46.4 °F

Climate (2020–Present)

Keokuk Municipal Airport (28 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    62.6 °F
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