St. Clair Regional Airport Weather Forecast

    • 56
    • 71

    Mostly Cloudy

    • 57
    • 75

    Mostly Cloudy

    • 57
    • 76

    Partly Sunny

    • 65
    • 81

    Rain Showers Likely

    • 66
    • 77

    Rain Showers Likely

    • 61
    • 77

    Chance Rain Showers

Today 26 Sep Franklin

Mostly cloudy with a chance of Sprinkles this Morning, then partly sunny this afternoon. Highs in the lower 70s. East Winds around 5 Mph.

Tonight 26 Sep Franklin

Mostly cloudy. A slight chance of Showers after midnight. Lows in the upper 50s. East Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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St. Clair Regional Airport Temperature Statistics

September Temperature

Washington Regional Airport (14.3 miles)

  • Lowest 23 September, 2026

    57.2 °F

  • Average September

    79.3 °F

  • Highest 5 September, 2026

    102.2 °F

Climate (2021–2026)

Washington Regional Airport (14.3 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    69.7 °F
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