Halfway Lake Weather Forecast

    • 50
    • 70

    Increasing Clouds

    • 61
    • 80

    Partly Sunny

    • 63
    • 81

    Rain Showers Likely

    • 52
    • 76

    Partly Sunny

    • 58
    • 71

    Chance Rain Showers

    • 56
    • 76

    Rain Showers Likely

Today 15 Sep Union

Patchy fog this morning. Sunny. Highs in the lower 70s. Southeast Winds around 5 Mph.

Tonight 15 Sep Union

Mostly clear. Lows in the lower 50s. South Winds around 5 Mph.

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  • Temperature Real-Time

Halfway Lake Temperature Statistics

September Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 8 September, 2026

    50 °F

  • Average September

    70.3 °F

  • Highest 1 September, 2026

    90 °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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