New Milltown Weather Forecast

    • 53
    • 69

    Rain

    • 50
    • 60

    Rain

    • 49
    • 63

    Mostly Cloudy

    • 48
    • 63

    Mostly Cloudy

    • 50
    • 65

    Chance Rain Showers

    • 51
    • 65

    Slight Chance Rain Showers

Today 21 Sep Lancaster

Partly sunny this Morning, then becoming mostly cloudy. Highs around 70. Northeast Winds 5 to 10 Mph.

Tonight 21 Sep Lancaster

Showers likely. Lows in the lower 50s. Northeast Winds 10 to 15 Mph. Chance of rain 70 percent.

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New Milltown Temperature Statistics

September Temperature

Chester County Airport (10.6 miles)

  • Lowest 15 September, 2026

    50.7 °F

  • Average September

    70.8 °F

  • Highest 1 September, 2026

    87.3 °F

Climate (2021–2026)

Chester County Airport (10.6 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    63 °F
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