Grand Junction Weather Forecast

    • 54
    • 81

    Increasing Clouds

    • 58
    • 82

    Mostly Cloudy

    • 57
    • 82

    Slight Chance Thunderstorms

    • 58
    • 83

    Slight Chance Thunderstorms

    • 56
    • 84

    Mostly Sunny

    • 58
    • 86

    Mostly Sunny

Today 18 Sep Grand Valley

Mostly clear. Highs 75 to 85.

Tonight 18 Sep Grand Valley

Partly cloudy. Lows in the 50s.

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Grand Junction Temperature Statistics

September Temperature

Grand Junction Regional Airport (4.3 miles)

  • Lowest 14 September, 2025

    46 °F

  • Average September

    71.3 °F

  • Highest 2 September, 2025

    93 °F

Climate (2020–Present)

Grand Junction Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    68.4 °F
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