South Boulder Weather Forecast

    • 43
    • 64

    Decreasing Clouds

    • 49
    • 68

    Mostly Sunny

    • 47
    • 75

    Chance Rain Showers

    • 48
    • 72

    Mostly Sunny

    • 56
    • 86

    Mostly Sunny

    • 56
    • 83

    Partly Sunny

Today 7 May Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Highs 64 to 70. West Winds 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 7 May Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy with a slight chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows near 40. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph in the Evening, becoming light. Chance of precipitation 10 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Boulder Temperature Statistics

May Temperature

Boulder Municipal Airport (4.3 miles)

  • Lowest 1 May, 2026

    32 °F

  • Average May

    53.1 °F

  • Highest 4 May, 2026

    73.4 °F

Climate (2021–Present)

Boulder Municipal Airport (4.3 miles)

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

  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    66.1 °F
Get WillyWeather+ to remove ads