Mercer Weather Forecast

    • 53
    • 76

    Mostly Sunny

    • 55
    • 79

    Rain Showers

    • 42
    • 65

    Rain Showers Likely

    • 44
    • 65

    Partly Sunny

    • 52
    • 72

    Rain Showers Likely

    • 46
    • 68

    Rain Showers Likely

Today 23 Apr Mercer

Mostly sunny. Warm with Highs in the mid 70s. North Winds around 5 Mph, becoming west this afternoon.

Tonight 23 Apr Mercer

Mainly clear. Mild. Lows in the lower 50s. North Winds around 5 Mph, becoming southeast after midnight.

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  • Temperature Real-Time

Mercer Temperature Statistics

April Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 8 April, 2026

    19.9 °F

  • Average April

    55.8 °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

    41.7 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    61.1 °F
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