Mount Gretna Weather Forecast

    • 68
    • 83

    Chance Rain Showers

    • 66
    • 85

    Rain Showers Likely

    • 62
    • 83

    Partly Sunny

    • 64
    • 82

    Partly Sunny

    • 68
    • 85

    Partly Sunny

    • 70
    • 87

    Partly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

Today 26 Aug Lebanon

Partly sunny. Near steady temperature in the lower 80s. South Winds 5 to 10 Mph.

Tonight 26 Aug Lebanon

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Not as cool with Lows in the upper 60s. Southeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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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

    74 °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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