Barnum Weather Forecast

    • 56
    • 75

    Slight Chance Thunderstorms

    • 59
    • 84

    Chance Thunderstorms

    • 59
    • 79

    Rain Showers Likely

    • 56
    • 83

    Rain Showers Likely

    • 54
    • 78

    Rain Showers Likely

    • 53
    • 77

    Chance Rain Showers

Today 15 Sep North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County

Partly cloudy in the Morning, then mostly cloudy with a chance of Showers and slight chance of Thunderstorms in the afternoon. Highs 68 to 78. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph in the afternoon. Chance of rain 30 percent.

Tonight 15 Sep North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County

Mostly cloudy with a 20 percent chance of Showers. Lows 49 to 55. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Barnum Temperature Statistics

September Temperature

Broomfield / Jeffco (13 miles)

  • Lowest 10 September, 2026

    53.6 °F

  • Average September

    71.4 °F

  • Highest 5 September, 2026

    93.2 °F

Climate (2021–2026)

Broomfield / Jeffco (13 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    66 °F
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