Delaware Run Weather Forecast

    • 70
    • 82

    Rain Showers

    • 69
    • 89

    Chance Thunderstorms

    • 59
    • 83

    Chance Rain Showers

    • 55
    • 78

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

    • 58
    • 78

    Slight Chance Thunderstorms

Today 2 Sep Northumberland

Patchy fog this morning. Mostly cloudy with a chance of Showers. A slight chance of Thunderstorms. Some Thunderstorms may be severe this afternoon. Highs around 80. Southeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 2 Sep Northumberland

Showers likely with a chance of Thunderstorms. Some Thunderstorms may be severe in the evening. Humid with Lows in the upper 60s. South Winds around 5 Mph. Chance of rain 70 percent.

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Delaware Run Temperature Statistics

September Temperature

Williamsport - Lycoming County Airport (8.1 miles)

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Climate (2021–2026)

Williamsport - Lycoming County Airport (8.1 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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