Harrisburg Weather Forecast

    • 23
    • 34

    Decreasing Clouds

    • 18
    • 28

    Partly Sunny

    • 22
    • 35

    Mostly Cloudy

    • 20
    • 33

    Partly Sunny

    • 24
    • 36

    Mostly Cloudy

    • 27
    • 38

    Slight Chance Snow Showers

Today 31 Dec Dauphin

Mostly cloudy. Highs in the lower 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 31 Dec Dauphin

Mostly cloudy. Near steady temperature in the lower 20s. West Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Harrisburg Temperature Statistics

December Temperature

Harrisburg, Capital City Airport (3.7 miles)

  • Lowest 16 December, 2025

    9 °F

  • Average December

    31.5 °F

  • Highest 19 December, 2025

    57.9 °F

Climate (2020–Present)

Harrisburg, Capital City Airport (3.7 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    66.5 °F
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