Vandalia Weather Forecast

    • 25
    • 47

    Decreasing Clouds

    • 19
    • 34

    Mostly Sunny

    • 39
    • 44

    Chance Rain

    • 33
    • 54

    Mostly Cloudy

    • 47
    • 54

    Rain Likely

    • 51
    • 62

    Chance Rain

    • 41
    • 59

    Mostly Cloudy

Today 20 Dec Montgomery

Partly cloudy. Warmer with Highs in the upper 40s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 20 Dec Montgomery

Partly cloudy. Lows in the mid 20s. West Winds around 10 Mph, becoming northwest after midnight.

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Vandalia Temperature Statistics

December Temperature

Dayton, Cox Dayton International Airport (1.2 miles)

  • Lowest 14 December, 2025

    -2 °F

  • Average December

    27.1 °F

  • Highest 18 December, 2025

    54 °F

Climate (2020–Present)

Dayton, Cox Dayton International Airport (1.2 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    64.6 °F
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