New Castle Weather Forecast

    • 8
    • 18

    Becoming Sunny

    • 25
    • 32

    Partly Sunny

    • 26
    • 41

    Mostly Cloudy

    • 22
    • 50

    Rain Showers

    • 19
    • 31

    Mostly Cloudy

    • 29
    • 43

    Chance Rain Showers

Today 15 Dec Lawrence

Considerable cloudiness with a chance of Flurries. Very cold with Highs around 20. Southwest Winds 5 to 10 Mph.

Tonight 15 Dec Lawrence

Mainly clear. Very cold with Lows around 7 above. Southwest Winds around 5 Mph.

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New Castle Temperature Statistics

December Temperature

New Castle, New Castle Municipal Airport (3.7 miles)

  • Lowest 5 December, 2025

    1 °F

  • Average December

    25.6 °F

  • Highest 10 December, 2025

    37.9 °F

Climate (2020–Present)

New Castle, New Castle Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    61 °F
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