St. Clair Regional Airport Weather Forecast

    • 75
    • 94

    Becoming Sunny

    • 77
    • 96

    Partly Sunny

    • 76
    • 96

    Mostly Sunny

    • 72
    • 94

    Thunderstorms Likely

    • 69
    • 88

    Thunderstorms Likely

    • 69
    • 85

    Chance Thunderstorms

Today 9 Aug Franklin

Sunny, hot with Highs in the mid 90s. South Winds 5 to 10 Mph. Heat index Values up to 107 this afternoon.

Tonight 9 Aug Franklin

Mostly clear. Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 103 early in the evening.

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St. Clair Regional Airport Temperature Statistics

August Temperature

Washington Regional Airport (14.3 miles)

  • Lowest 3 August, 2026

    62.6 °F

  • Average August

    74.1 °F

  • Highest 4 August, 2026

    89.6 °F

Climate (2021–2026)

Washington Regional Airport (14.3 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    69.7 °F
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