Jefferson Weather Forecast

    • 33
    • 65

    Chance Thunderstorms

    • 31
    • 59

    Slight Chance Thunderstorms

    • 32
    • 63

    Partly Sunny

    • 36
    • 67

    Slight Chance Thunderstorms

    • 36
    • 68

    Chance Thunderstorms

    • 37
    • 69

    Chance Thunderstorms

Today 29 May South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly cloudy. Chance of Thunderstorms and snow Showers early in the afternoon. Chance of Thunderstorms late in the afternoon. Highs 54 to 64. Chance of snow 30 percent.

Tonight 29 May South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly cloudy with a chance of rain Showers, snow Showers and slight chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows 29 to 39. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jefferson Temperature Statistics

May Temperature

Copper Mountain - Red Cliff Pass (19.9 miles)

  • Lowest 6 May, 2026

    14 °F

  • Average May

    33.7 °F

  • Highest 12 May, 2026

    51.8 °F

Climate (2021–Present)

Copper Mountain - Red Cliff Pass (19.9 miles)

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  • Average Low 2021–2026

    30 °F

  • Average 2021–2026

    36.3 °F

  • Average High 2021–2026

    42.6 °F
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