St. Clair Regional Airport Weather Forecast

    • 68
    • 96

    Slight Chance Thunderstorms

    • 67
    • 96

    Slight Chance Thunderstorms

    • 66
    • 93

    Slight Chance Thunderstorms

    • 64
    • 95

    Slight Chance Thunderstorms

    • 64
    • 93

    Slight Chance Thunderstorms

    • 62
    • 88

    Chance Rain Showers

Today 13 Sep Franklin

Sunny, hot with Highs in the mid 90s. West Winds around 5 Mph.

Tonight 13 Sep Franklin

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 60s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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St. Clair Regional Airport Temperature Statistics

September Temperature

Washington Regional Airport (14.3 miles)

  • Lowest 8 September, 2025

    42.8 °F

  • Average September

    65.6 °F

  • Highest 10 September, 2025

    89.6 °F

Climate (2020–Present)

Washington Regional Airport (14.3 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    68.7 °F
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