Harrisburg International Airport Weather Forecast

    • 62
    • 78

    Mostly Cloudy

    • 63
    • 80

    Mostly Cloudy

    • 56
    • 82

    Chance Rain Showers

    • 52
    • 70

    Chance Rain Showers

    • 52
    • 66

    Chance Rain Showers

    • 41
    • 66

    Mostly Sunny

Today 30 Sep Dauphin

Mostly cloudy. Highs in the upper 70s. Southwest Winds around 5 Mph.

Tonight 30 Sep Dauphin

Mostly cloudy. Patchy fog after midnight. Lows around 60. South Winds around 5 Mph.

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Harrisburg International Airport Temperature Statistics

September Temperature

Harrisburg, Harrisburg International Airport (0 miles)

  • Lowest 24 September, 2026

    47.6 °F

  • Average September

    70.3 °F

  • Highest 1 September, 2026

    92.6 °F

Climate (2021–2026)

Harrisburg, Harrisburg International Airport (0 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    55.9 °F

  • Average High 2021–2026

    65.1 °F
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