Central Boulder Weather Forecast

    • 54
    • 84

    Mostly Sunny

    • 49
    • 77

    Slight Chance Thunderstorms

    • 45
    • 61

    Rain Showers Likely

    • 42
    • 55

    Chance Rain Showers

    • 42
    • 55

    Chance Rain Showers

    • 44
    • 63

    Slight Chance Thunderstorms

    • 43
    • 66

    Slight Chance Thunderstorms

Today 21 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly sunny. Highs in the lower to mid 80s. South Winds 10 to 15 Mph in the afternoon.

Tonight 21 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly clear. Lows 45 to 53.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Central Boulder Temperature Statistics

September Temperature

Boulder Municipal Airport (2.5 miles)

  • Lowest 17 September, 2017

    44.6 °F
  • Average September

    69.6 °F
  • Highest 3 September, 2017

    96.8 °F

Climate (2010–Present)

Boulder Municipal Airport (2.5 miles)

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  • Average Low 2010–Present

    40.7 °F
  • Average 2010–Present

    53.2 °F
  • Average High 2010–Present

    65.3 °F
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