Gunnison Weather Forecast

    • 45
    • 67

    Rain Showers

    • 37
    • 70

    Rain Showers

    • 35
    • 70

    Rain Showers Likely

    • 33
    • 70

    Mostly Sunny

    • 33
    • 70

    Partly Sunny

    • 34
    • 69

    Chance Thunderstorms

Today 17 Sep Upper Gunnison River Valley

Showers with a slight chance of Thunderstorms in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Highs in the 60s.

Tonight 17 Sep Upper Gunnison River Valley

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the 40s. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gunnison Temperature Statistics

September Temperature

Gunnison, Gunnison-Crested Butte Regional Airport (0.6 miles)

  • Lowest 11 September, 2026

    32 °F

  • Average September

    60.9 °F

  • Highest 6 September, 2026

    81 °F

Climate (2021–2026)

Gunnison, Gunnison-Crested Butte Regional Airport (0.6 miles)

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  • Average Low 2021–2026

    25.1 °F

  • Average 2021–2026

    40.5 °F

  • Average High 2021–2026

    55.7 °F
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