Mount Vernon Weather Forecast

    • 57
    • 84

    Chance Thunderstorms

    • 57
    • 81

    Rain Showers

    • 54
    • 78

    Thunderstorms Likely

    • 53
    • 76

    Rain Showers

    • 55
    • 81

    Chance Thunderstorms

    • 56
    • 84

    Slight Chance Thunderstorms

    • 58
    • 86

    Slight Chance Thunderstorms

Today 21 Jul Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Partly cloudy in the Morning, then becoming mostly cloudy. Slight chance of Showers in the morning. Chance of Thunderstorms in the afternoon. Highs 78 to 88. Chance of rain 30 percent.

Tonight 21 Jul Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Mostly cloudy with a chance of Thunderstorms early in the Evening, then partly cloudy overnight. Lows 52 to 62. Chance of precipitation 30 percent.

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Mount Vernon Temperature Statistics

July Temperature

Broomfield / Jeffco (15.5 miles)

  • Lowest 7 July, 2025

    55.4 °F

  • Average July

    72 °F

  • Highest 9 July, 2025

    100.4 °F

Climate (2020–Present)

Broomfield / Jeffco (15.5 miles)

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  • Average Low 2020–2025

    41.2 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    64.8 °F
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