Longmont Weather Forecast

    • 41
    • 72

    Increasing Clouds

    • 40
    • 70

    Slight Chance Rain Showers

    • 32
    • 61

    Mostly Sunny

    • 29
    • 54

    Mostly Sunny

    • 35
    • 61

    Mostly Sunny

    • 33
    • 61

    Partly Sunny

Today 25 Oct Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Sunny. Highs in the lower 70s.

Tonight 25 Oct Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower to mid 40s.

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Longmont Temperature Statistics

October Temperature

Vance Brand Airport (3.1 miles)

  • Lowest 19 October, 2025

    29.3 °F

  • Average October

    56.9 °F

  • Highest 3 October, 2025

    88 °F

Climate (2020–Present)

Vance Brand Airport (3.1 miles)

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  • Average Low 2020–2025

    37.8 °F

  • Average 2020–2025

    52.5 °F

  • Average High 2020–2025

    67.8 °F
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