West Middlesex Weather Forecast

    • 68
    • 90

    Mostly Sunny

    • 64
    • 89

    Rain Showers

    • 44
    • 70

    Chance Rain Showers

    • 50
    • 68

    Partly Sunny

    • 56
    • 72

    Chance Rain Showers

    • 59
    • 75

    Rain Showers Likely

Today 18 May Mercer

Sunny. Unseasonably warm with Highs in the upper 80s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 18 May Mercer

Partly cloudy. Warm with Lows in the upper 60s. Southwest Winds 5 to 10 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

    51.1 °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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