Lower Arapahoe Weather Forecast

    • 55
    • 81

    Becoming Sunny

    • 49
    • 78

    Mostly Sunny

    • 46
    • 67

    Rain Showers

    • 42
    • 55

    Rain Showers

    • 40
    • 61

    Chance Rain Showers

    • 39
    • 61

    Mostly Sunny

    • 47
    • 73

    Mostly Sunny

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

Mostly cloudy. Highs 76 to 84. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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

Mostly cloudy in the evening then clearing. Lows 48 to 56. South Winds 10 to 15 Mph in the Evening, becoming light.

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Lower Arapahoe Temperature Statistics

October Temperature

Boulder Municipal Airport (3.7 miles)

  • Lowest 2 October, 2026

    46.4 °F

  • Average October

    68.3 °F

  • Highest 5 October, 2026

    91.4 °F

Climate (2021–2026)

Boulder Municipal Airport (3.7 miles)

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  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    66.4 °F
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