New Castle Weather Forecast

    • 53
    • 90

    Slight Chance Thunderstorms

    • 53
    • 92

    Mostly Sunny

    • 55
    • 95

    Mostly Sunny

    • 57
    • 94

    Mostly Sunny

    • 57
    • 95

    Mostly Sunny

    • 58
    • 95

    Mostly Sunny

Today 2 Aug Debeque to Silt Corridor

Mostly sunny with a slight chance of Showers and Thunderstorms. Areas of smoke. Highs 85 to 95. West Winds 10 to 15 Mph with Gusts up to 30 Mph in the afternoon. Chance of rain 20 percent.

Tonight 2 Aug Debeque to Silt Corridor

Mostly clear. Slight chance of Showers and Thunderstorms in the evening. Lows 45 to 55. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph in the Evening, becoming light. Chance of rain 10 percent.

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New Castle Temperature Statistics

August Temperature

Garfield County Regional Airport (9.9 miles)

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Climate (2020–Present)

Garfield County Regional Airport (9.9 miles)

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  • Average Low 2020–2025

    35.9 °F

  • Average 2020–2025

    49.5 °F

  • Average High 2020–2025

    64.3 °F
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