Halfway Lake Weather Forecast

    • 50
    • 75

    Decreasing Clouds

    • 52
    • 74

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 65
    • 83

    Partly Sunny

    • 53
    • 78

    Slight Chance Rain Showers

    • 50
    • 72

    Mostly Sunny

Today 6 Sep Union

Mostly sunny. Highs in the mid 70s. North Winds around 5 Mph.

Tonight 6 Sep Union

Partly cloudy in the Evening, then becoming mostly clear. Patchy dense fog after midnight. Lows in the lower 50s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfway Lake Temperature Statistics

September Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 2 September, 2026

    66.9 °F

  • Average September

    74.7 °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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