Mount Gretna Weather Forecast

    • 43
    • 69

    Sunny

    • 39
    • 66

    Mostly Sunny

    • 39
    • 66

    Sunny

    • 36
    • 59

    Sunny

    • 39
    • 59

    Sunny

    • 43
    • 63

    Mostly Sunny

    • 47
    • 67

    Partly Sunny

Today 20 Oct Lebanon

Mostly sunny. Highs in the lower 60s.

Tonight 20 Oct Lebanon

Clear. Lows in the lower 40s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Gretna Temperature Statistics

October Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 18 October, 2026

    34 °F

  • Average October

    60.1 °F

  • Highest 2 October, 2026

    84 °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 °F
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