Thurmont Weather Forecast

    • 61
    • 81

    Rain Showers

    • 67
    • 85

    Mostly Sunny

    • 57
    • 83

    Rain Showers

    • 51
    • 73

    Partly Sunny

    • 49
    • 72

    Mostly Sunny

    • 52
    • 74

    Partly Sunny

Today 4 Sep Frederick

Showers likely with a chance of Thunderstorms. Highs in the lower 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 4 Sep Frederick

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the lower 60s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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Thurmont Temperature Statistics

September Temperature

Frederick Municipal Airport (14.3 miles)

  • Lowest 1 September, 2025

    50 °F

  • Average September

    59.8 °F

  • Highest 1 September, 2025

    80.6 °F

Climate (2020–Present)

Frederick Municipal Airport (14.3 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    67.6 °F
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