Newtown Square Weather Forecast

    • 65
    • 84

    Chance Thunderstorms

    • 61
    • 79

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 58
    • 78

    Mostly Sunny

    • 60
    • 80

    Partly Sunny

    • 67
    • 81

    Slight Chance Rain Showers

Today 4 Sep Delaware

Mostly sunny. A chance of Showers and Thunderstorms in the afternoon. Hot with Highs in the mid 80s. Northwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 4 Sep Delaware

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Humid with Lows in the mid 60s. Northwest Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Newtown Square Temperature Statistics

September Temperature

Philadelphia, Philadelphia International Airport (11.8 miles)

  • Lowest 1 September, 2026

    75 °F

  • Average September

    81.2 °F

  • Highest 1 September, 2026

    91.9 °F

Climate (2021–2026)

Philadelphia, Philadelphia International Airport (11.8 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    67.2 °F
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