Mount Vernon Weather Forecast

    • 52
    • 76

    Chance Thunderstorms

    • 55
    • 80

    Slight Chance Thunderstorms

    • 57
    • 83

    Chance Thunderstorms

    • 56
    • 84

    Chance Thunderstorms

    • 52
    • 78

    Rain Showers Likely

    • 52
    • 76

    Chance Thunderstorms

Today 26 Aug Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Mostly sunny in the Morning, then mostly cloudy with a chance of Thunderstorms early in the afternoon. Showers likely and chance of Thunderstorms late in the afternoon. Highs 72 to 82. Chance of rain 60 percent.

Tonight 26 Aug Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Mostly cloudy with a chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 50 to 58. Chance of precipitation 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Vernon Temperature Statistics

August Temperature

Broomfield / Jeffco (15.5 miles)

  • Lowest 4 August, 2026

    51.8 °F

  • Average August

    73.2 °F

  • Highest 2 August, 2026

    102.2 °F

Climate (2021–2026)

Broomfield / Jeffco (15.5 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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