St. Clair Regional Airport Weather Forecast

    • 26
    • 44

    Mostly Sunny

    • 33
    • 54

    Partly Sunny

    • 45
    • 55

    Chance Rain

    • 19
    • 56

    Partly Sunny

    • 33
    • 42

    Partly Sunny

    • 33
    • 59

    Mostly Cloudy

Today 15 Dec Franklin

Sunny. Not as cool with Highs in the mid 40s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 15 Dec Franklin

Partly cloudy. Not as cool with Lows in the upper 20s. Southwest Winds 5 to 10 Mph.

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St. Clair Regional Airport Temperature Statistics

December Temperature

Washington Regional Airport (14.3 miles)

  • Lowest 13 December, 2025

    10.4 °F

  • Average December

    32.4 °F

  • Highest 9 December, 2025

    59 °F

Climate (2020–Present)

Washington Regional Airport (14.3 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    69 °F
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