Mount Gretna Weather Forecast

    • 73
    • 98

    Smoke

    • 69
    • 95

    Smoke

    • 70
    • 91

    Rain Showers Likely

    • 69
    • 86

    Rain Showers

    • 66
    • 86

    Slight Chance Thunderstorms

    • 69
    • 87

    Chance Thunderstorms

Today 15 Jul Lebanon

Sunny. Very hot with Highs in the upper 90s. West Winds 10 to 15 Mph. Heat index Values up to 105.

Tonight 15 Jul Lebanon

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Areas of smoke in the Evening, then smoke after midnight. Warm with Lows in the lower 70s. Northwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values between 100 and 104 early in the evening.

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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

    78.2 °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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