West Middlesex Weather Forecast

    • 72
    • 86

    Rain Showers

    • 73
    • 91

    Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

    • 66
    • 88

    Chance Thunderstorms

    • 61
    • 82

    Partly Sunny

    • 58
    • 81

    Mostly Sunny

Today 31 Aug Mercer

Partly sunny. Near steady temperature in the lower 80s. Southwest Winds 5 to 10 Mph.

Tonight 31 Aug Mercer

Mostly cloudy. A slight chance of Showers after midnight. Humid with Lows in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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West Middlesex Temperature Statistics

August Temperature

New Castle, New Castle Municipal Airport (9.9 miles)

  • Lowest 29 August, 2026

    48.9 °F

  • Average August

    70 °F

  • Highest 5 August, 2026

    87.1 °F

Climate (2021–2026)

New Castle, New Castle Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    61.1 °F
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