Thornton Weather Forecast

    • 38
    • 60

    Slight Chance Rain

    • 35
    • 60

    Mostly Cloudy

    • 38
    • 62

    Partly Sunny

    • 36
    • 64

    Partly Sunny

    • 34
    • 62

    Partly Sunny

    • 31
    • 58

    Partly Sunny

Today 1 Jan North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County

Mostly cloudy. Lows 24 to 30. Highs 46 to 52.

Tonight 1 Jan North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County

Mostly cloudy. Lows in the mid 30s.

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Thornton Temperature Statistics

January Temperature

Broomfield / Jeffco (6.8 miles)

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Climate (2021–Present)

Broomfield / Jeffco (6.8 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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