Casselman Weather Forecast

    • 34
    • 46

    Rain Showers

    • 20
    • 39

    Snow Showers Likely

    • 28
    • 46

    Mostly Cloudy

    • 17
    • 36

    Partly Sunny

    • 25
    • 33

    Mostly Cloudy

    • 31
    • 43

    Chance Rain

Today 18 Dec Somerset

Partly sunny. A slight chance of rain in the afternoon. Highs in the mid 40s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 18 Dec Somerset

Mostly clear. Lows in the upper 20s. Southeast Winds 5 to 10 Mph with Gusts up to 20 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

    22.1 °F

  • Highest 10 December, 2025

    41 °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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