Sunbury Airport Weather Forecast

    • 57
    • 81

    Chance Rain

    • 58
    • 74

    Chance Rain

    • 56
    • 84

    Mostly Sunny

    • 52
    • 83

    Mostly Sunny

    • 54
    • 78

    Partly Sunny

    • 56
    • 77

    Mostly Cloudy

Today 16 Sep Northumberland

Partly sunny. Highs around 80. Northeast Winds around 5 Mph.

Tonight 16 Sep Northumberland

Mostly cloudy. A chance of light rain after midnight. Lows in the mid 50s. East Winds around 5 Mph. Chance of rain 40 percent.

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Sunbury Airport Temperature Statistics

September Temperature

Selinsgrove Penn Valley Airport (6.2 miles)

  • Lowest 8 September, 2025

    39.9 °F

  • Average September

    63.1 °F

  • Highest 13 September, 2025

    84 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (6.2 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.2 °F
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