Casselman Weather Forecast

    • 55
    • 71

    Rain Showers

    • 52
    • 62

    Rain Showers

    • 47
    • 60

    Rain Showers

    • 46
    • 56

    Rain Showers Likely

    • 44
    • 58

    Slight Chance Rain Showers

    • 44
    • 62

    Partly Sunny

Today 20 Sep Somerset

Rain with a slight chance of Thunderstorms this Morning, then Showers with a chance of Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall. Highs in the lower 70s. West Winds 5 to 10 Mph. Chance of rain near 100 percent.

Tonight 20 Sep Somerset

Cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows in the mid 50s. Northwest Winds around 5 Mph, becoming northeast after midnight. Chance of rain 50 percent.

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Casselman Temperature Statistics

September Temperature

Garrett County Airport (21.7 miles)

  • Lowest 15 September, 2026

    50 °F

  • Average September

    68 °F

  • Highest 2 September, 2026

    84.2 °F

Climate (2021–2026)

Garrett County Airport (21.7 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    49 °F

  • Average High 2021–2026

    57 °F
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