Mount Gretna Weather Forecast

    • 69
    • 84

    Rain Showers

    • 59
    • 82

    Partly Sunny

    • 59
    • 78

    Sunny

    • 61
    • 81

    Partly Sunny

    • 63
    • 81

    Partly Sunny

    • 66
    • 84

    Chance Rain Showers

Today 21 Jul Lebanon

Showers and Thunderstorms likely this Morning, then Showers with Thunderstorms likely this afternoon. Some Thunderstorms may be severe with damaging Winds this afternoon. Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 21 Jul Lebanon

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Some Thunderstorms may be severe with damaging Winds in the evening. Humid with Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Gretna Temperature Statistics

July Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 13 July, 2026

    63 °F

  • Average July

    77.8 °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

    55.5 °F

  • Average High 2021–2026

    65.1 °F
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