Mount Gretna Weather Forecast

    • 62
    • 79

    Increasing Clouds

    • 69
    • 85

    Chance Thunderstorms

    • 71
    • 86

    Chance Rain Showers

    • 73
    • 91

    Slight Chance Thunderstorms

    • 72
    • 91

    Chance Thunderstorms

    • 68
    • 88

    Chance Rain Showers

    • 64
    • 83

    Slight Chance Rain Showers

Today 29 Aug Lebanon

Sunny. Near steady temperature in the upper 70s. Southwest Winds around 5 Mph.

Tonight 29 Aug Lebanon

Mostly clear this Evening, then becoming partly cloudy. Lows around 60. Southeast 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 21 August, 2026

    57 °F

  • Average August

    73.5 °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

    45.8 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.1 °F
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