Halfway Lake Weather Forecast

    • 63
    • 78

    Rain Showers

    • 52
    • 75

    Partly Sunny

    • 54
    • 75

    Sunny

    • 57
    • 78

    Partly Sunny

    • 59
    • 79

    Partly Sunny

    • 62
    • 82

    Chance Rain Showers

Today 21 Jul Union

Mostly cloudy. A chance of Showers and Thunderstorms this Morning, then Showers with Thunderstorms likely this afternoon. Some Thunderstorms may be severe with damaging Winds this afternoon. Highs around 80. South Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 21 Jul Union

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Some Thunderstorms may be severe with damaging Winds. Locally heavy rainfall possible in the evening. Humid with Lows in the mid 60s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfway Lake Temperature Statistics

July Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 17 July, 2026

    60.1 °F

  • Average July

    76.4 °F

  • Highest 1 July, 2026

    97 °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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