Hagerstown Weather Forecast

    • 33
    • 43

    Increasing Clouds

    • 21
    • 45

    Mostly Sunny

    • 30
    • 39

    Mostly Cloudy

    • 35
    • 47

    Mostly Cloudy

    • 35
    • 48

    Mostly Cloudy

    • 47
    • 54

    Slight Chance Rain

Today 20 Dec Washington

Mostly sunny. Highs in the lower 40s. South Winds 5 to 10 Mph.

Tonight 20 Dec Washington

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 30s. South Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight.

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Hagerstown Temperature Statistics

December Temperature

Hagerstown, Washington County Regional Airport (4.3 miles)

  • Lowest 16 December, 2025

    12.9 °F

  • Average December

    31.1 °F

  • Highest 17 December, 2025

    57 °F

Climate (2020–Present)

Hagerstown, Washington County Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    65.8 °F
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