Grand Junction Weather Forecast

    • 60
    • 91

    Becoming Sunny

    • 61
    • 91

    Mostly Sunny

    • 65
    • 92

    Mostly Sunny

    • 63
    • 92

    Slight Chance Thunderstorms

    • 64
    • 90

    Chance Rain Showers

    • 58
    • 85

    Chance Rain Showers

Today 8 Sep Grand Valley

Sunny. Highs 85 to 95. Northwest Winds 10 to 15 Mph with Gusts up to 20 Mph in the afternoon.

Tonight 8 Sep Grand Valley

Partly cloudy. Lows 55 to 65.

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Grand Junction Temperature Statistics

September Temperature

Grand Junction Regional Airport (4.3 miles)

  • Lowest 1 September, 2026

    55.7 °F

  • Average September

    74.5 °F

  • Highest 4 September, 2026

    91.7 °F

Climate (2021–2026)

Grand Junction Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    69.2 °F
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