Longmont Weather Forecast

    • 32
    • 66

    Decreasing Clouds

    • 34
    • 55

    Partly Sunny

    • 26
    • 59

    Partly Sunny

    • 32
    • 59

    Partly Sunny

    • 32
    • 59

    Mostly Sunny

    • 34
    • 61

    Partly Sunny

Today 11 Dec Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the lower to mid 60s. West Winds 15 to 25 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 11 Dec Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Partly cloudy. Lows in the lower to mid 30s. West Winds 10 to 15 Mph in the Evening, becoming light.

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Longmont Temperature Statistics

December Temperature

Vance Brand Airport (3.1 miles)

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Climate (2020–Present)

Vance Brand Airport (3.1 miles)

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  • Average Low 2020–2025

    38.1 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    68.1 °F
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