Lancaster Weather Forecast

    • 60
    • 89

    Increasing Clouds

    • 61
    • 87

    Partly Sunny

    • 62
    • 90

    Mostly Sunny

    • 61
    • 90

    Mostly Sunny

    • 62
    • 90

    Mostly Sunny

    • 62
    • 90

    Partly Sunny

Today 13 Sep Smith

Sunny. Highs in the upper 80s. Light and variable Winds.

Tonight 13 Sep Smith

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lancaster Temperature Statistics

September Temperature

Sparta Upper Cumberland Regional Airport (18.6 miles)

  • Lowest 8 September, 2025

    44.6 °F

  • Average September

    66.6 °F

  • Highest 5 September, 2025

    87.8 °F

Climate (2020–Present)

Sparta Upper Cumberland Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    59.3 °F

  • Average High 2020–2025

    70 °F
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