Swatara State Park Weather Forecast

    • 51
    • 81

    Becoming Sunny

    • 60
    • 74

    Rain Showers Likely

    • 59
    • 74

    Rain Showers

    • 54
    • 70

    Chance Rain Showers

    • 49
    • 63

    Chance Rain Showers

    • 49
    • 61

    Chance Rain Showers

    • 50
    • 63

    Chance Rain Showers

Today 18 Sep Lebanon

Partly sunny. A chance of Showers in the morning. Highs in the upper 60s. Chance of rain 30 percent.

Tonight 18 Sep Lebanon

Partly cloudy this Evening, then clearing. Much cooler with Lows in the lower 50s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swatara State Park Temperature Statistics

September Temperature

Muir Army Air Field / Indiantown (3.1 miles)

  • Lowest 15 September, 2026

    45.3 °F

  • Average September

    72.2 °F

  • Highest 1 September, 2026

    92.1 °F

Climate (2021–2026)

Muir Army Air Field / Indiantown (3.1 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    64.1 °F
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