Newcastle Weather Forecast

    • 52
    • 71

    Partly Sunny

    • 57
    • 75

    Rain Showers Likely

    • 45
    • 72

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 49
    • 74

    Partly Sunny

    • 50
    • 71

    Chance Rain Showers

    • 50
    • 72

    Chance Rain Showers

Today 12 Sep Newcastle

Partly cloudy. Highs in the lower 70s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 12 Sep Newcastle

Partly cloudy. Lows in the lower 50s. East Winds 10 to 20 Mph with Gusts up to 35 Mph.

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Newcastle Temperature Statistics

September Temperature

Mondell Field (5.6 miles)

  • Lowest 9 September, 2026

    46.4 °F

  • Average September

    72.3 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Mondell Field (5.6 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    60.9 °F
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