Halfway Lake Weather Forecast

    • 47
    • 64

    Partly Sunny

    • 44
    • 63

    Rain Showers

    • 44
    • 56

    Slight Chance Rain Showers

    • 44
    • 66

    Mostly Cloudy

    • 55
    • 73

    Slight Chance Thunderstorms

    • 55
    • 79

    Slight Chance Thunderstorms

Today 12 May Union

Areas of frost in the morning. Sunny. Highs in the mid 60s. Light and variable Winds, becoming southwest around 5 Mph in the afternoon.

Tonight 12 May Union

Clear. Areas of frost. Lows in the mid 30s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfway Lake Temperature Statistics

May Temperature

Selinsgrove Penn Valley Airport (20.5 miles)

  • Lowest 1 May, 2026

    34 °F

  • Average May

    53.4 °F

  • Highest 5 May, 2026

    80.1 °F

Climate (2021–Present)

Selinsgrove Penn Valley Airport (20.5 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63.1 °F
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