Halfway Lake Weather Forecast

    • 23
    • 33

    Mostly Cloudy

    • 9
    • 32

    Decreasing Clouds

    • 17
    • 24

    Mostly Cloudy

    • 23
    • 34

    Mostly Cloudy

    • 16
    • 34

    Mostly Cloudy

    • 9
    • 24

    Partly Sunny

    • 20
    • 28

    Chance Snow

Today 3 Dec Union

Mostly sunny. Highs in the mid 30s. Southwest Winds around 5 Mph.

Tonight 3 Dec Union

Mostly cloudy. Lows in the mid 20s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfway Lake Temperature Statistics

December Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    33 °F

  • Highest 1 December, 2025

    39 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (20.5 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.1 °F
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