Mark Twain Lake Weather Forecast

    • 44
    • 53

    Increasing Clouds

    • 23
    • 52

    Rain Likely

    • 36
    • 40

    Partly Sunny

    • 29
    • 50

    Partly Sunny

    • 30
    • 39

    Mostly Cloudy

    • 38
    • 44

    Mostly Cloudy

Today 17 Dec Monroe

Mostly sunny. Highs in the lower 50s. North Winds around 5 Mph, becoming southeast this afternoon.

Tonight 17 Dec Monroe

Partly cloudy in the Evening, then mostly cloudy with a chance of rain after midnight. Lows in the lower 40s. Temperature rising to around 50 after midnight. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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Mark Twain Lake Temperature Statistics

December Temperature

Quincy Regional Airport-Baldwin Field (42.9 miles)

  • Lowest 14 December, 2025

    -4 °F

  • Average December

    23.3 °F

  • Highest 10 December, 2025

    46.9 °F

Climate (2020–Present)

Quincy Regional Airport-Baldwin Field (42.9 miles)

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    64.8 °F
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