Chautauqua Weather Forecast

    • 54
    • 82

    Partly Sunny

    • 57
    • 81

    Mostly Cloudy

    • 55
    • 75

    Chance Rain Showers

    • 51
    • 66

    Rain Showers Likely

    • 50
    • 72

    Chance Rain Showers

    • 50
    • 74

    Slight Chance Rain Showers

Today 26 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly sunny. Highs in the lower to mid 80s.

Tonight 26 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Lows in the lower to mid 50s.

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Chautauqua Temperature Statistics

September Temperature

Boulder Municipal Airport (3.7 miles)

  • Lowest 22 September, 2026

    50 °F

  • Average September

    70.6 °F

  • Highest 13 September, 2026

    96.8 °F

Climate (2021–2026)

Boulder Municipal Airport (3.7 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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