Mercer Weather Forecast

    • 58
    • 76

    Rain Showers

    • 43
    • 79

    Rain Showers

    • 33
    • 49

    Mostly Cloudy

    • 30
    • 48

    Chance Rain/Snow

    • 23
    • 42

    Mostly Sunny

    • 41
    • 57

    Partly Sunny

Today 3 Apr Mercer

Numerous Showers and scattered Thunderstorms. Warm with Highs in the mid 70s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 3 Apr Mercer

Scattered Thunderstorms. Scattered Showers in the Evening, then numerous Showers after midnight. Mild. Lows in the upper 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming east after midnight. Chance of rain 70 percent.

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Mercer Temperature Statistics

April Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 1 April, 2026

    44.1 °F

  • Average April

    48.4 °F

  • Highest 1 April, 2026

    59 °F

Climate (2021–Present)

New Castle, New Castle Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    61.1 °F
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