Mercer Weather Forecast

    • 56
    • 73

    Decreasing Clouds

    • 38
    • 78

    Rain Showers

    • 29
    • 49

    Chance Rain Showers

    • 27
    • 44

    Partly Sunny

    • 47
    • 64

    Slight Chance Rain Showers

    • 45
    • 68

    Chance Rain Showers

Today 17 Apr Mercer

Mostly cloudy this Morning, then becoming mostly sunny. Warm with Highs in the lower 70s. Northwest Winds around 5 Mph.

Tonight 17 Apr Mercer

Mainly clear. Mild. Lows in the mid 50s. Southeast Winds 5 to 10 Mph.

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Mercer Temperature Statistics

April Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 8 April, 2026

    19.9 °F

  • Average April

    54.8 °F

  • Highest 4 April, 2026

    82.9 °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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