Mercer Weather Forecast

    • 33
    • 60

    Sunny

    • 44
    • 62

    Partly Sunny

    • 54
    • 72

    Rain Showers

    • 42
    • 69

    Rain Showers

    • 40
    • 59

    Slight Chance Rain Showers

    • 42
    • 63

    Chance Rain Showers

Today 16 Oct Mercer

Patchy frost this morning. Sunny. Highs around 60. North Winds 5 to 10 Mph.

Tonight 16 Oct Mercer

Clear. Areas of frost after midnight. Lows in the lower 30s. North Winds around 5 Mph in the Evening, becoming light and variable.

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Mercer Temperature Statistics

October Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 9 October, 2025

    35.1 °F

  • Average October

    57.7 °F

  • Highest 5 October, 2025

    82.9 °F

Climate (2020–Present)

New Castle, New Castle Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    61.2 °F
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