Halfway Lake Weather Forecast

    • 19
    • 26

    Chance Snow Showers

    • 16
    • 28

    Chance Snow Showers

    • 13
    • 22

    Mostly Cloudy

    • 17
    • 29

    Mostly Cloudy

    • 15
    • 29

    Mostly Cloudy

    • 19
    • 30

    Mostly Cloudy

Today 30 Dec Union

Mostly cloudy in the Morning, then becoming partly sunny. Blustery, cooler with Highs around 30. West Winds 15 to 25 Mph with Gusts up to 45 Mph. Wind chill Values as low as 4 above.

Tonight 30 Dec Union

Mostly cloudy. Lows in the lower 20s. West Winds 10 to 15 Mph with Gusts up to 35 Mph.

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Halfway Lake Temperature Statistics

December Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 9 December, 2025

    5 °F

  • Average December

    29.1 °F

  • Highest 19 December, 2025

    57 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (20.5 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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