Marietta Weather Forecast

    • 59
    • 76

    Chance Rain

    • 53
    • 71

    Rain Showers

    • 50
    • 63

    Rain Showers

    • 49
    • 64

    Chance Rain Showers

    • 49
    • 64

    Mostly Cloudy

    • 49
    • 67

    Slight Chance Rain Showers

    • 51
    • 70

    Partly Sunny

Today 20 Sep Lancaster

Partly sunny. Highs in the lower 70s.

Tonight 20 Sep Lancaster

Mostly cloudy. Rain this evening. Patchy fog. Lows in the upper 50s. North Winds 5 to 10 Mph. Chance of rain 90 percent.

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Marietta Temperature Statistics

September Temperature

Lancaster, Lancaster Airport (14.3 miles)

  • Lowest 15 September, 2026

    48 °F

  • Average September

    71.7 °F

  • Highest 1 September, 2026

    89.1 °F

Climate (2021–2026)

Lancaster, Lancaster Airport (14.3 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.1 °F
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