Lancaster Weather Forecast

    • 65
    • 87

    Mostly Sunny

    • 68
    • 92

    Mostly Sunny

    • 67
    • 91

    Partly Sunny

    • 60
    • 81

    Chance Thunderstorms

    • 57
    • 80

    Partly Sunny

    • 58
    • 79

    Mostly Cloudy

Today 4 Sep Southern Lancaster

Sunny. Highs in the upper 80s. Southwest Winds 5 to 10 Mph.

Tonight 4 Sep Southern Lancaster

Mostly clear. Lows in the mid 60s. South Winds 5 to 10 Mph.

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Lancaster Temperature Statistics

September Temperature

Lancaster County-mc Whirter Field (4.3 miles)

  • Lowest 1 September, 2025

    55.4 °F

  • Average September

    68.1 °F

  • Highest 2 September, 2025

    80.6 °F

Climate (2020–Present)

Lancaster County-mc Whirter Field (4.3 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    62.3 °F

  • Average High 2020–2025

    73.7 °F
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