Casselman Weather Forecast

    • 63
    • 82

    Chance Thunderstorms

    • 66
    • 88

    Mostly Sunny

    • 67
    • 87

    Partly Sunny

    • 50
    • 79

    Rain Showers

    • 50
    • 68

    Rain Showers Likely

    • 52
    • 65

    Rain Showers Likely

Today 17 May Somerset

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Morning, then mostly sunny with a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 70s. West Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 17 May Somerset

Mostly cloudy and not as cool. Near steady temperature in the upper 50s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Graph Plots Open in Graphs

  • 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

    49.1 °F

  • Highest 5 May, 2026

    71.6 °F

Climate (2021–Present)

Garrett County Airport (21.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    41.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    56.8 °F
Get WillyWeather+ to remove ads