Golden Gate Canyon State Park Weather Forecast

    • 44
    • 66

    Rain Showers Likely

    • 42
    • 63

    Rain Showers Likely

    • 40
    • 59

    Chance Thunderstorms

    • 43
    • 60

    Partly Sunny

    • 44
    • 63

    Rain Showers Likely

    • 44
    • 64

    Chance Rain Showers

Today 18 Sep South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Slight chance of rain Showers in the Morning, then rain Showers likely and chance of Thunderstorms in the afternoon. Highs 54 to 64. Chance of rain 70 percent.

Tonight 18 Sep South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly cloudy with a chance of rain Showers and slight chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 35 to 43. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Golden Gate Canyon State Park Temperature Statistics

September Temperature

Boulder Municipal Airport (16.2 miles)

  • Lowest 16 September, 2026

    51.8 °F

  • Average September

    72.8 °F

  • Highest 13 September, 2026

    96.8 °F

Climate (2021–2026)

Boulder Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    66.4 °F
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