Halfway Lake Weather Forecast

    • 16
    • 28

    Snow Showers

    • 13
    • 22

    Mostly Cloudy

    • 17
    • 28

    Mostly Cloudy

    • 16
    • 28

    Mostly Cloudy

    • 16
    • 29

    Mostly Cloudy

    • 23
    • 31

    Slight Chance Snow Showers

Today 31 Dec Union

Mostly cloudy. Isolated snow Showers this afternoon. Highs in the lower 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of snow 20 percent. Wind chill Values as low as 5 above this morning.

Tonight 31 Dec Union

Numerous snow Showers. Snow accumulation around an inch. Lows around 20. Southwest Winds 5 to 10 Mph, becoming northwest 10 to 15 Mph after midnight. Gusts up to 30 Mph. Chance of snow 70 percent. Wind chill Values as low as 6 above after midnight.

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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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