Boulder Municipal Airport Weather Forecast

    • 36
    • 47

    Partly Sunny

    • 43
    • 67

    Breezy

    • 32
    • 56

    Slight Chance Rain Showers

    • 40
    • 55

    Partly Sunny

    • 41
    • 68

    Partly Sunny

    • 39
    • 66

    Partly Sunny

Today 18 Dec Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Highs in the upper 40s. Northwest Winds 10 to 15 Mph, becoming southwest in the afternoon.

Tonight 18 Dec Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Lows 31 to 39. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Boulder Municipal Airport Temperature Statistics

December Temperature

Boulder Municipal Airport (0 miles)

  • Lowest 4 December, 2025

    10.4 °F

  • Average December

    42.4 °F

  • Highest 16 December, 2025

    68 °F

Climate (2020–Present)

Boulder Municipal Airport (0 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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