Flagstaff Weather Forecast

    • 58
    • 81

    Sunny

    • 61
    • 88

    Mostly Sunny

    • 58
    • 86

    Partly Sunny

    • 57
    • 83

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

    • 58
    • 82

    Partly Sunny

Today 4 Oct Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy with a 20 percent chance of Showers. Highs 69 to 77.

Tonight 4 Oct Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Clear. Lows 48 to 56.

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Flagstaff Temperature Statistics

October Temperature

Boulder Municipal Airport (3.7 miles)

  • Lowest 2 October, 2026

    46.4 °F

  • Average October

    62.7 °F

  • Highest 2 October, 2026

    84.2 °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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