Baseline Sub Weather Forecast

    • 44
    • 77

    Chance Rain Showers

    • 48
    • 70

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 57
    • 84

    Mostly Sunny

    • 63
    • 89

    Mostly Cloudy

    • 57
    • 86

    Chance Thunderstorms

Today 9 May Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Slight chance of Thunderstorms late in the afternoon. Highs 72 to 78. North Winds 10 to 20 Mph with Gusts up to 40 Mph. Chance of precipitation 10 percent.

Tonight 9 May Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Slight chance of Thunderstorms in the evening. Mostly cloudy with a chance of Showers. Lows 38 to 44. North Winds 20 to 25 Mph with Gusts up to 40 Mph in the Evening, becoming light. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Baseline Sub Temperature Statistics

May Temperature

Boulder Municipal Airport (2.5 miles)

  • Lowest 1 May, 2026

    32 °F

  • Average May

    50.9 °F

  • Highest 4 May, 2026

    73.4 °F

Climate (2021–Present)

Boulder Municipal Airport (2.5 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    66.1 °F
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