East Boulder Weather Forecast

    • 57
    • 89

    Decreasing Clouds

    • 60
    • 83

    Slight Chance Thunderstorms

    • 63
    • 91

    Slight Chance Thunderstorms

    • 55
    • 88

    Rain Showers Likely

    • 56
    • 73

    Rain Showers Likely

    • 56
    • 82

    Chance Thunderstorms

    • 54
    • 77

    Chance Thunderstorms

Today 11 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy. Highs 84 to 92. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 11 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Slight chance of Showers early in the evening. Lows 52 to 58. Chance of rain 20 percent.

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East Boulder Temperature Statistics

September Temperature

Boulder Municipal Airport (2.5 miles)

  • Lowest 9 September, 2026

    55.4 °F

  • Average September

    74.8 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Boulder Municipal Airport (2.5 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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