Mount Gretna Weather Forecast

    • 65
    • 85

    Decreasing Clouds

    • 67
    • 85

    Slight Chance Rain Showers

    • 70
    • 81

    Rain Showers

    • 64
    • 85

    Chance Thunderstorms

    • 63
    • 83

    Mostly Sunny

    • 69
    • 86

    Slight Chance Thunderstorms

    • 64
    • 85

    Chance Thunderstorms

Today 14 Aug Lebanon

Partly sunny. Highs in the mid 80s. West Winds around 5 Mph.

Tonight 14 Aug Lebanon

Mostly clear. Lows in the mid 60s. North Winds around 5 Mph.

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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

    75.8 °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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