Green Mountain Weather Forecast

    • 35
    • 61

    Becoming Sunny

    • 47
    • 76

    Partly Sunny

    • 36
    • 66

    Mostly Sunny

    • 42
    • 67

    Partly Sunny

    • 42
    • 70

    Mostly Cloudy

    • 41
    • 66

    Partly Sunny

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

Mostly sunny. Highs in the lower 60s. Northwest Winds 10 to 20 Mph, becoming north in the afternoon. Gusts up to 35 Mph.

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

Clear. Lows in the lower to mid 30s.

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Green Mountain Temperature Statistics

October Temperature

Broomfield / Jeffco (14.9 miles)

  • Lowest 6 October, 2025

    42.8 °F

  • Average October

    56.9 °F

  • Highest 3 October, 2025

    84.2 °F

Climate (2020–Present)

Broomfield / Jeffco (14.9 miles)

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  • Average Low 2020–2025

    41.3 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    64.8 °F
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