Mercer Weather Forecast

    • 35
    • 58

    Rain

    • 43
    • 56

    Mostly Cloudy

    • 34
    • 70

    Rain Likely

    • 24
    • 43

    Partly Sunny

    • 31
    • 49

    Mostly Cloudy

    • 33
    • 49

    Mostly Cloudy

Today 20 Mar Mercer

Mostly cloudy. A chance of rain in the Morning, then rain in the afternoon. Highs in the upper 50s. South Winds 10 to 15 Mph, becoming southwest in the afternoon. Chance of rain 90 percent.

Tonight 20 Mar Mercer

Mostly cloudy. A chance of rain with a slight chance of Thunderstorms in the evening. Lows in the mid 30s. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Real-Time

Mercer Temperature Statistics

March Temperature

New Castle, New Castle Municipal Airport (16.2 miles)

  • Lowest 2 March, 2026

    15.1 °F

  • Average March

    47 °F

  • Highest 7 March, 2026

    79 °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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