Mount Gretna Weather Forecast

    • 54
    • 75

    Becoming Sunny

    • 59
    • 77

    Mostly Sunny

    • 63
    • 80

    Rain Showers Likely

    • 65
    • 89

    Rain Showers

    • 60
    • 81

    Slight Chance Thunderstorms

    • 60
    • 81

    Mostly Sunny

Today 15 Jun Lebanon

Mostly sunny. Not as warm. Less humid with Highs in the mid 70s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 15 Jun Lebanon

Mostly clear. Lows in the lower 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Gretna Temperature Statistics

June Temperature

Lancaster, Lancaster Airport (12.4 miles)

  • Lowest 2 June, 2026

    46.9 °F

  • Average June

    71.4 °F

  • Highest 12 June, 2026

    95 °F

Climate (2021–Present)

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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