Colorado National Monument Weather Forecast

    • 60
    • 67

    Rain Showers

    • 57
    • 70

    Rain Showers

    • 54
    • 69

    Rain Showers Likely

    • 54
    • 70

    Mostly Sunny

    • 56
    • 72

    Partly Sunny

    • 55
    • 71

    Chance Rain Showers

Today 17 Sep Uncompahgre Plateau/Dallas Divide

Showers with a slight chance of Thunderstorms in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Highs 55 to 65.

Tonight 17 Sep Uncompahgre Plateau/Dallas Divide

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

Colorado National Monument Temperature Statistics

September Temperature

Grand Junction Regional Airport (9.9 miles)

  • Lowest 1 September, 2026

    55.7 °F

  • Average September

    75.4 °F

  • Highest 4 September, 2026

    91.7 °F

Climate (2021–2026)

Grand Junction Regional Airport (9.9 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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