Four Mile Creek Weather Forecast

    • 56
    • 74

    Chance Thunderstorms

    • 52
    • 70

    Chance Rain Showers

    • 53
    • 75

    Chance Thunderstorms

    • 53
    • 82

    Mostly Sunny

    • 55
    • 82

    Partly Sunny

    • 51
    • 78

    Rain Showers Likely

Today 23 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly sunny with a 20 percent chance of Showers. Highs in the lower to mid 70s.

Tonight 23 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Slight chance of Thunderstorms early in the evening. Mostly cloudy with a chance of Showers. Lows 53 to 59. Chance of rain 30 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Four Mile Creek Temperature Statistics

September Temperature

Boulder Municipal Airport (1.2 miles)

  • Lowest 16 September, 2026

    51.8 °F

  • Average September

    71.2 °F

  • Highest 13 September, 2026

    96.8 °F

Climate (2021–2026)

Boulder Municipal Airport (1.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    66.4 °F
Get WillyWeather+ to remove ads