Mount Gretna Weather Forecast

    • 69
    • 82

    Rain Showers

    • 68
    • 87

    Thunderstorms

    • 63
    • 84

    Slight Chance Thunderstorms

    • 63
    • 83

    Partly Sunny

    • 64
    • 84

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

Today 9 Jul Lebanon

Mostly cloudy. Scattered Showers and Thunderstorms this Morning, then numerous Showers and scattered Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 80s. Southwest Winds around 5 Mph. Chance of rain 70 percent.

Tonight 9 Jul Lebanon

Mostly cloudy with scattered Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Humid with Lows in the upper 60s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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Mount Gretna Temperature Statistics

July Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 6 July, 2026

    68 °F

  • Average July

    83 °F

  • Highest 2 July, 2026

    102.9 °F

Climate (2021–2026)

Lancaster, Lancaster Airport (12.4 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    65.1 °F
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