New Castle Weather Forecast

    • 46
    • 68

    Becoming Sunny

    • 48
    • 68

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

    • 57
    • 72

    Mostly Cloudy

    • 63
    • 73

    Chance Rain Showers

    • 61
    • 74

    Chance Rain Showers

Today 26 Sep Henry

Mostly sunny. Highs in the upper 60s. Northeast Winds around 5 Mph.

Tonight 26 Sep Henry

Mostly clear. Lows in the mid 40s. Northeast Winds around 5 Mph through the late Overnight, becoming light and variable.

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New Castle Temperature Statistics

September Temperature

Anderson Municipal Airport (17.4 miles)

  • Lowest 14 September, 2026

    52.7 °F

  • Average September

    71.3 °F

  • Highest 3 September, 2026

    95 °F

Climate (2021–2026)

Anderson Municipal Airport (17.4 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    62.3 °F
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