Newcastle Weather Forecast

    • 61
    • 86

    Chance Thunderstorms

    • 62
    • 85

    Chance Thunderstorms

    • 63
    • 90

    Mostly Sunny

    • 62
    • 92

    Slight Chance Thunderstorms

    • 61
    • 87

    Chance Thunderstorms

    • 61
    • 85

    Chance Thunderstorms

    • 62
    • 87

    Chance Thunderstorms

Today 18 Jul Newcastle

Partly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 80s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 18 Jul Newcastle

Partly cloudy this Evening, then becoming mostly cloudy. Isolated Showers and Thunderstorms this Evening, then scattered Showers and Thunderstorms. Lows around 60. Southeast Winds 10 to 15 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

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Newcastle Temperature Statistics

July Temperature

Mondell Field (5.6 miles)

  • Lowest 12 July, 2025

    41 °F

  • Average July

    72.3 °F

  • Highest 14 July, 2025

    98.6 °F

Climate (2020–Present)

Mondell Field (5.6 miles)

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  • Average Low 2020–2025

    35.6 °F

  • Average 2020–2025

    48.1 °F

  • Average High 2020–2025

    60 °F
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