James Peak Weather Forecast

    • 34
    • 45

    Rain Showers Likely

    • 33
    • 37

    Rain Showers

    • 33
    • 44

    Chance Rain/Snow

    • 34
    • 47

    Partly Sunny

    • 35
    • 48

    Partly Sunny

    • 29
    • 42

    Rain/Snow Likely

Today 23 Sep South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly cloudy. Patchy fog in the morning. Slight chance of rain Showers in the Morning, then a chance of Thunderstorms in the afternoon. Highs 50 to 60. Chance of rain 50 percent.

Tonight 23 Sep South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Slight chance of Thunderstorms in the evening. Rain Showers likely. Patchy fog after midnight. Lows 35 to 43. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

James Peak Temperature Statistics

September Temperature

Boulder Municipal Airport (27.3 miles)

  • Lowest 16 September, 2026

    51.8 °F

  • Average September

    71.2 °F

  • Highest 13 September, 2026

    96.8 °F

Climate (2021–2026)

Boulder Municipal Airport (27.3 miles)

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  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    66.4 °F
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