New Milltown Weather Forecast

    • 61
    • 69

    Rain Showers Likely

    • 59
    • 81

    Partly Sunny

    • 53
    • 82

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

    • 59
    • 80

    Partly Sunny

Today 17 Sep Lancaster

Cloudy with a chance of Thunderstorms. A chance of Showers this Morning, then Showers likely this afternoon. Highs around 70. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 17 Sep Lancaster

Cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

New Milltown Temperature Statistics

September Temperature

Chester County Airport (10.6 miles)

  • Lowest 9 September, 2025

    48.2 °F

  • Average September

    66.7 °F

  • Highest 6 September, 2025

    84.2 °F

Climate (2020–Present)

Chester County Airport (10.6 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.1 °F
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