Lyons Weather Forecast

    • 53
    • 73

    Rain Showers Likely

    • 51
    • 66

    Rain Showers Likely

    • 47
    • 67

    Chance Rain Showers

    • 45
    • 66

    Mostly Sunny

    • 49
    • 74

    Mostly Sunny

    • 50
    • 77

    Partly Sunny

Today 28 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy. Slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the lower to mid 70s. Chance of rain 50 percent.

Tonight 28 Sep Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Cloudy with a 50 percent chance of Showers. Lows in the lower to mid 50s.

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Lyons Temperature Statistics

September Temperature

Vance Brand Airport (6.8 miles)

  • Lowest 26 September, 2026

    43.3 °F

  • Average September

    67.8 °F

  • Highest 13 September, 2026

    93.4 °F

Climate (2021–2026)

Vance Brand Airport (6.8 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    68.8 °F
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