Vintage Weather Forecast

    • 58
    • 82

    Becoming Sunny

    • 56
    • 85

    Mostly Sunny

    • 57
    • 77

    Partly Sunny

    • 58
    • 74

    Mostly Cloudy

    • 61
    • 79

    Partly Sunny

    • 63
    • 84

    Mostly Cloudy

Today 18 Sep Lancaster

Sunny, warmer with Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Lancaster

Clear. Lows in the upper 50s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Vintage Temperature Statistics

September Temperature

Chester County Airport (11.2 miles)

  • Lowest 9 September, 2025

    48.2 °F
  • Average September

    66.6 °F
  • Highest 6 September, 2025

    84.2 °F

Climate (2020–Present)

Chester County Airport (11.2 miles)

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  • Average Low 2020–2025

    46.1 °F
  • Average 2020–2025

    54.6 °F
  • Average High 2020–2025

    63.1 °F
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