Harrisburg International Airport Weather Forecast

    • 15
    • 27

    Gradual Clearing

    • 22
    • 32

    Partly Sunny

    • 25
    • 46

    Mostly Cloudy

    • 37
    • 49

    Rain Showers

    • 23
    • 43

    Partly Sunny

    • 31
    • 39

    Mostly Cloudy

    • 27
    • 45

    Mostly Cloudy

Today 15 Dec Dauphin

Mostly cloudy with a 20 percent chance of snow Showers. Highs in the mid 20s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 15 Dec Dauphin

Mostly cloudy this Evening, then clearing. Lows around 15. Southwest Winds around 5 Mph.

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Harrisburg International Airport Temperature Statistics

December Temperature

Harrisburg, Harrisburg International Airport (0 miles)

  • Lowest 9 December, 2025

    12.9 °F

  • Average December

    30.4 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Harrisburg, Harrisburg International Airport (0 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.2 °F
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