Greenbrier Weather Forecast

    • 67
    • 80

    Rain Showers

    • 67
    • 86

    Chance Thunderstorms

    • 57
    • 82

    Chance Rain Showers

    • 52
    • 77

    Mostly Sunny

    • 52
    • 75

    Partly Sunny

    • 55
    • 77

    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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Greenbrier Temperature Statistics

September Temperature

Selinsgrove Penn Valley Airport (11.2 miles)

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Climate (2021–2026)

Selinsgrove Penn Valley Airport (11.2 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63 °F
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