West Middlesex Weather Forecast

    • 50
    • 70

    Decreasing Clouds

    • 61
    • 80

    Rain Showers Likely

    • 63
    • 87

    Chance Thunderstorms

    • 69
    • 92

    Partly Sunny

    • 68
    • 91

    Chance Thunderstorms

    • 57
    • 82

    Rain Showers Likely

Today 15 May Mercer

Partly cloudy. Highs in the upper 60s. Northwest Winds around 5 Mph.

Tonight 15 May Mercer

Mainly clear. Lows in the upper 40s. South Winds around 5 Mph.

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West Middlesex Temperature Statistics

May Temperature

New Castle, New Castle Municipal Airport (9.9 miles)

  • Lowest 1 May, 2026

    33.1 °F

  • Average May

    50.8 °F

  • Highest 4 May, 2026

    73 °F

Climate (2021–Present)

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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