Mount Vernon Weather Forecast

    • 33
    • 37

    Rain/Snow Likely

    • 33
    • 47

    Rain Showers Likely

    • 35
    • 56

    Rain Showers Likely

    • 37
    • 54

    Chance Thunderstorms

    • 40
    • 64

    Chance Thunderstorms

    • 45
    • 72

    Slight Chance Thunderstorms

    • 47
    • 75

    Slight Chance Thunderstorms

Today 19 May Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Slight chance of Thunderstorms. Chance of rain and snow Showers early in the Afternoon, then rain and snow Showers likely late in the afternoon. Snow accumulation up to 1 inch. Highs 37 to 47. Chance of precipitation 70 percent.

Tonight 19 May Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below

Rain and snow Showers. Snow accumulation up to 1 inch. Lows 31 to 37.

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Mount Vernon Temperature Statistics

May Temperature

Broomfield / Jeffco (15.5 miles)

  • Lowest 5 May, 2026

    32 °F

  • Average May

    56.7 °F

  • Highest 11 May, 2026

    87.8 °F

Climate (2021–Present)

Broomfield / Jeffco (15.5 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    65.9 °F
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