Mount Vernon Weather Forecast

    • 29
    • 50

    Decreasing Clouds

    • 34
    • 43

    Rain Likely

    • 34
    • 49

    Rain

    • 43
    • 54

    Rain Likely

    • 37
    • 57

    Chance Rain

    • 14
    • 45

    Chance Rain

Today 23 Dec Knox

Cloudy. A slight chance of rain this morning. Highs in the upper 40s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 23 Dec Knox

Mostly cloudy. Lows in the upper 20s. Northwest Winds 5 to 10 Mph.

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Mount Vernon Temperature Statistics

December Temperature

Knox County Airfield (4.3 miles)

  • Lowest 15 December, 2025

    -0.4 °F

  • Average December

    25.5 °F

  • Highest 18 December, 2025

    55.4 °F

Climate (2020–Present)

Knox County Airfield (4.3 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    61.6 °F
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