New Castle Weather Forecast

    • 16
    • 33

    Snow Likely

    • 18
    • 26

    Decreasing Clouds

    • 20
    • 34

    Mostly Cloudy

    • 20
    • 32

    Mostly Cloudy

    • 27
    • 37

    Mostly Cloudy

    • 22
    • 38

    Mostly Cloudy

    • 20
    • 31

    Mostly Cloudy

Today 31 Dec Henry

Mostly cloudy with scattered Flurries. Not as cool. Near steady temperature in the lower 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 31 Dec Henry

Mostly cloudy. Snow likely through Midnight, then a chance of snow toward daybreak. Snow accumulation around an inch. Cold with Lows around 17. West Winds 10 to 15 Mph, becoming northwest 5 to 10 Mph toward daybreak. Gusts up to 30 Mph. Chance of snow 70 percent.

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New Castle Temperature Statistics

December Temperature

Anderson Municipal Airport (17.4 miles)

  • Lowest 15 December, 2025

    -5.3 °F

  • Average December

    30.3 °F

  • Highest 28 December, 2025

    62.8 °F

Climate (2021–Present)

Anderson Municipal Airport (17.4 miles)

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  • Average Low 2021–2025

    44 °F

  • Average 2021–2025

    51.4 °F

  • Average High 2021–2025

    62 °F
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