Harrisburg Weather Forecast

    • 43
    • 47

    Rain

    • 24
    • 53

    Rain

    • 32
    • 39

    Mostly Cloudy

    • 23
    • 42

    Partly Sunny

    • 26
    • 37

    Mostly Cloudy

    • 34
    • 42

    Mostly Cloudy

Today 18 Dec Dauphin

Partly sunny. Near steady temperature in the mid 40s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 18 Dec Dauphin

Rain likely in the Evening, then rain after midnight. Mild. Lows in the lower 40s. Temperature rising to around 50 after midnight. Southeast Winds 15 to 20 Mph. Gusts up to 30 Mph, increasing to 40 Mph after midnight. Chance of rain near 100 percent.

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Harrisburg Temperature Statistics

December Temperature

Harrisburg, Capital City Airport (3.7 miles)

  • Lowest 16 December, 2025

    9 °F

  • Average December

    28.9 °F

  • Highest 1 December, 2025

    41 °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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