Halfway Lake Weather Forecast

    • 16
    • 29

    Increasing Clouds

    • 23
    • 30

    Slight Chance Snow

    • 31
    • 37

    Chance Rain

    • 31
    • 42

    Mostly Cloudy

    • 34
    • 41

    Chance Rain

    • 37
    • 45

    Chance Rain

Today 4 Jan Union

Mostly sunny. Highs in the lower 30s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 4 Jan Union

Mostly cloudy. Lows around 20. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfway Lake Temperature Statistics

January Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 1 January, 2026

    17.1 °F

  • Average January

    21.8 °F

  • Highest 1 January, 2026

    28.9 °F

Climate (2021–Present)

Selinsgrove Penn Valley Airport (20.5 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63.1 °F
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