Lewisburg Weather Forecast

    • 34
    • 44

    Snow Showers Likely

    • 28
    • 44

    Partly Sunny

    • 28
    • 42

    Mostly Cloudy

    • 28
    • 34

    Wintry Mix

    • 32
    • 39

    Rain Showers Likely

    • 22
    • 44

    Rain Showers Likely

Today 23 Dec Union

Cloudy. Snow Showers with a chance of freezing rain in the morning. Little or no snow accumulation. Ice accumulation around a trace. Highs in the lower 40s. South Winds around 5 Mph. Chance of precipitation 80 percent.

Tonight 23 Dec Union

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Lewisburg Temperature Statistics

December Temperature

Selinsgrove Penn Valley Airport (9.9 miles)

  • Lowest 9 December, 2025

    5 °F

  • Average December

    28 °F

  • Highest 19 December, 2025

    57 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (9.9 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    63.1 °F
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