Old North Boulder Weather Forecast

    • 41
    • 72

    Partly Sunny

    • 42
    • 67

    Increasing Clouds

    • 43
    • 66

    Mostly Cloudy

    • 40
    • 66

    Partly Sunny

    • 33
    • 61

    Partly Sunny

    • 23
    • 50

    Slight Chance Snow

    • 29
    • 46

    Partly Sunny

Today 22 Dec Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Highs 72 to 78. West Winds 10 to 20 Mph with Gusts up to 40 Mph.

Tonight 22 Dec Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Lows 36 to 42. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph in the Evening, becoming light.

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Old North Boulder Temperature Statistics

December Temperature

Boulder Municipal Airport (2.5 miles)

  • Lowest 4 December, 2025

    10.4 °F

  • Average December

    43.7 °F

  • Highest 19 December, 2025

    69.8 °F

Climate (2020–Present)

Boulder Municipal Airport (2.5 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    65.2 °F
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