Four Mile Creek Weather Forecast

    • 49
    • 76

    Rain Showers Likely

    • 47
    • 66

    Rain Showers Likely

    • 46
    • 68

    Chance Rain Showers

    • 49
    • 75

    Mostly Sunny

    • 53
    • 81

    Partly Sunny

    • 53
    • 82

    Partly Sunny

Today 16 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy in the Morning, then mostly cloudy with a chance of Thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 50 percent.

Tonight 16 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Showers likely and chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows near 50. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

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Four Mile Creek Temperature Statistics

September Temperature

Boulder Municipal Airport (1.2 miles)

  • Lowest 6 September, 2025

    44.6 °F

  • Average September

    69.2 °F

  • Highest 10 September, 2025

    91.4 °F

Climate (2020–Present)

Boulder Municipal Airport (1.2 miles)

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  • Average Low 2020–2025

    40.4 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    65 °F
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