Newtown Weather Forecast

    • 69
    • 85

    Slight Chance Rain Showers

    • 59
    • 83

    Mostly Sunny

    • 61
    • 76

    Rain Showers Likely

    • 61
    • 74

    Rain Showers

    • 57
    • 70

    Mostly Cloudy

    • 52
    • 61

    Slight Chance Rain Showers

    • 52
    • 62

    Mostly Cloudy

Today 17 Sep Lower Bucks

Partly sunny with a 30 percent chance of Showers. Highs in the mid 60s.

Tonight 17 Sep Lower Bucks

A slight chance of Thunderstorms this evening. Mostly cloudy with a chance of Showers. Lows in the upper 60s. Southwest Winds around 5 Mph, becoming west after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Newtown Temperature Statistics

September Temperature

Trenton, Mercer County Airport (6.8 miles)

  • Lowest 15 September, 2026

    52 °F

  • Average September

    72.9 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Trenton, Mercer County Airport (6.8 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    64.5 °F
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