Mount Vernon Weather Forecast

    • 55
    • 82

    Chance Thunderstorms

    • 53
    • 79

    Chance Thunderstorms

    • 53
    • 79

    Slight Chance Thunderstorms

    • 57
    • 86

    Mostly Sunny

    • 58
    • 86

    Mostly Sunny

    • 60
    • 88

    Mostly Sunny

Today 8 Jul Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Mostly sunny in the Morning, then Showers likely and chance of Thunderstorms in the afternoon. Highs 77 to 87. Chance of rain 60 percent.

Tonight 8 Jul Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Partly cloudy. Lows 53 to 63.

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Mount Vernon Temperature Statistics

July Temperature

Broomfield / Jeffco (15.5 miles)

  • Lowest 1 July, 2026

    55.4 °F

  • Average July

    71.8 °F

  • Highest 5 July, 2026

    93.2 °F

Climate (2021–2026)

Broomfield / Jeffco (15.5 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    65.9 °F
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