Swatara State Park Weather Forecast

    • 14
    • 28

    Clearing Late

    • 20
    • 32

    Partly Sunny

    • 23
    • 45

    Mostly Cloudy

    • 35
    • 50

    Rain Showers

    • 22
    • 44

    Partly Sunny

    • 31
    • 39

    Slight Chance Rain Showers

    • 27
    • 46

    Slight Chance Rain Showers

Today 15 Dec Lebanon

Mostly cloudy with a 20 percent chance of snow Showers. Highs in the upper 20s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 15 Dec Lebanon

Mostly cloudy this Evening, then clearing. Lows around 15. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swatara State Park Temperature Statistics

December Temperature

Muir Army Air Field / Indiantown (3.1 miles)

  • Lowest 9 December, 2025

    8.4 °F

  • Average December

    30 °F

  • Highest 1 December, 2025

    41.5 °F

Climate (2020–Present)

Muir Army Air Field / Indiantown (3.1 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    64.2 °F
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