Halfway Lake Weather Forecast

    • 57
    • 79

    Partly Sunny

    • 60
    • 81

    Chance Rain Showers

    • 56
    • 76

    Chance Rain Showers

    • 59
    • 77

    Chance Rain Showers

    • 59
    • 77

    Chance Rain Showers

    • 55
    • 76

    Chance Thunderstorms

Today 18 Aug Union

Mostly sunny. Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Aug Union

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Northwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfway Lake Temperature Statistics

August Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 4 August, 2026

    57 °F

  • Average August

    73.3 °F

  • Highest 7 August, 2026

    87.1 °F

Climate (2021–2026)

Selinsgrove Penn Valley Airport (20.5 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    63.1 °F
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