Mount Gretna Weather Forecast

    • 63
    • 84

    Becoming Sunny

    • 64
    • 84

    Sunny

    • 71
    • 90

    Sunny

    • 70
    • 95

    Mostly Sunny

    • 68
    • 90

    Partly Sunny

    • 67
    • 88

    Slight Chance Rain Showers

Today 12 Jul Lebanon

Mostly sunny. Highs in the mid 80s. East Winds around 5 Mph.

Tonight 12 Jul Lebanon

Partly cloudy in the Evening, then clearing. Lows in the lower 60s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Gretna Temperature Statistics

July Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 7 July, 2026

    66.9 °F

  • Average July

    79.8 °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

    55.6 °F

  • Average High 2021–2026

    65.1 °F
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