Casselman Weather Forecast

    • 48
    • 70

    Becoming Sunny

    • 51
    • 72

    Partly Sunny

    • 48
    • 69

    Slight Chance Thunderstorms

    • 49
    • 71

    Mostly Sunny

    • 56
    • 75

    Mostly Sunny

    • 60
    • 78

    Mostly Cloudy

Today 31 May Somerset

Sunny. Highs around 70. East Winds around 5 Mph, becoming west in the afternoon.

Tonight 31 May Somerset

Mostly clear. Cooler with Lows in the lower 40s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casselman Temperature Statistics

May Temperature

Garrett County Airport (21.7 miles)

  • Lowest 1 May, 2026

    32 °F

  • Average May

    54.6 °F

  • Highest 18 May, 2026

    84.2 °F

Climate (2021–Present)

Garrett County Airport (21.7 miles)

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  • Average Low 2021–2026

    41.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    56.8 °F
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