Northwest Arvada Weather Forecast

    • 39
    • 63

    Partly Sunny

    • 38
    • 60

    Slight Chance Rain

    • 35
    • 59

    Mostly Cloudy

    • 38
    • 63

    Partly Sunny

    • 35
    • 63

    Partly Sunny

    • 34
    • 61

    Partly Sunny

    • 30
    • 57

    Partly Sunny

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

Partly cloudy. Highs near 60.

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

Partly cloudy in the Evening, then becoming mostly cloudy. Lows 33 to 39.

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Northwest Arvada Temperature Statistics

December Temperature

Broomfield / Jeffco (5.6 miles)

  • Lowest 1 December, 2025

    14 °F

  • Average December

    43.6 °F

  • Highest 22 December, 2025

    77 °F

Climate (2021–Present)

Broomfield / Jeffco (5.6 miles)

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  • Average Low 2021–2025

    41.5 °F

  • Average 2021–2025

    50.9 °F

  • Average High 2021–2025

    65.1 °F
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