Old North Boulder Weather Forecast

    • 48
    • 70

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 64
    • 88

    Mostly Cloudy

    • 58
    • 86

    Chance Thunderstorms

    • 57
    • 84

    Chance Thunderstorms

Today 10 May Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly sunny. Highs near 70.

Tonight 10 May Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly clear. Lows 41 to 47.

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Old North Boulder 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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