Lower Arapahoe Weather Forecast

    • 29
    • 51

    Decreasing Clouds

    • 43
    • 63

    Mostly Sunny

    • 41
    • 76

    Mostly Sunny

    • 42
    • 64

    Partly Sunny

    • 42
    • 72

    Partly Sunny

    • 41
    • 69

    Partly Sunny

Today 31 Oct Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy in the Morning, then becoming partly cloudy. Highs around 50.

Tonight 31 Oct Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly clear. Lows 24 to 30.

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Lower Arapahoe Temperature Statistics

October Temperature

Boulder Municipal Airport (3.7 miles)

  • Lowest 19 October, 2025

    32 °F

  • Average October

    55.5 °F

  • Highest 3 October, 2025

    86 °F

Climate (2020–Present)

Boulder Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    65.1 °F
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