Mercer Weather Forecast

    • 50
    • 70

    Partly Sunny

    • 45
    • 69

    Mostly Sunny

    • 49
    • 68

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

    • 58
    • 68

    Rain Showers Likely

    • 54
    • 71

    Chance Rain Showers

Today 7 Oct Mercer

Sunny. Near steady temperature around 70. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 7 Oct Mercer

Mainly clear. Lows in the lower 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Mercer Temperature Statistics

October Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 4 October, 2026

    39.9 °F

  • Average October

    58.8 °F

  • Highest 1 October, 2026

    82 °F

Climate (2021–2026)

New Castle, New Castle Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    61.1 °F
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