Casselman Weather Forecast

    • 18
    • 31

    Becoming Sunny

    • 32
    • 40

    Rain/Snow Likely

    • 32
    • 47

    Rain Likely

    • 35
    • 44

    Rain Showers Likely

    • 46
    • 52

    Rain Showers

    • 35
    • 54

    Chance Rain Showers

Today 21 Dec Somerset

Mostly sunny. Much cooler with Highs around 30. West Winds 15 to 20 Mph with Gusts up to 40 Mph.

Tonight 21 Dec Somerset

Mostly clear. Colder with Lows around 15. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casselman Temperature Statistics

December Temperature

Garrett County Airport (21.7 miles)

  • Lowest 14 December, 2025

    1.4 °F

  • Average December

    24.8 °F

  • Highest 18 December, 2025

    50 °F

Climate (2020–Present)

Garrett County Airport (21.7 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    56.4 °F
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