Waterstone Weather Forecast

    • 52
    • 72

    Chance Rain Showers

    • 52
    • 75

    Chance Thunderstorms

    • 53
    • 83

    Mostly Sunny

    • 55
    • 83

    Partly Sunny

    • 51
    • 77

    Rain Showers Likely

    • 45
    • 64

    Chance Rain Showers

Today 24 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy. Slight chance of Showers in the morning. Chance of Showers and slight chance of Thunderstorms in the afternoon. Highs near 70. Northeast Winds 10 to 15 Mph in the afternoon. Chance of rain 40 percent.

Tonight 24 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Slight chance of Thunderstorms in the evening. Mostly cloudy with a chance of Showers. Patchy fog after midnight. Lows in the lower to mid 50s. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Waterstone Temperature Statistics

September Temperature

Boulder Municipal Airport (1.2 miles)

  • Lowest 22 September, 2026

    50 °F

  • Average September

    71 °F

  • Highest 13 September, 2026

    96.8 °F

Climate (2021–2026)

Boulder Municipal Airport (1.2 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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