Mount Gretna Weather Forecast

    • 71
    • 85

    Rain Showers Likely

    • 67
    • 88

    Mostly Sunny

    • 70
    • 89

    Chance Thunderstorms

    • 68
    • 85

    Rain Showers Likely

    • 67
    • 85

    Chance Rain Showers

    • 66
    • 85

    Slight Chance Thunderstorms

Today 8 Aug Lebanon

Partly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the mid 80s. West Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 8 Aug Lebanon

Partly cloudy with a slight chance of Showers and Thunderstorms this Evening, then mostly clear after midnight. Warm with Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Gretna Temperature Statistics

August Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 4 August, 2026

    62.1 °F

  • Average August

    76.1 °F

  • Highest 6 August, 2026

    89.1 °F

Climate (2021–2026)

Lancaster, Lancaster Airport (12.4 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.1 °F
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