Jamestown Weather Forecast

    • 61
    • 82

    Chance Thunderstorms

    • 55
    • 79

    Rain Showers

    • 52
    • 69

    Rain Showers

    • 51
    • 70

    Rain Showers

    • 51
    • 69

    Thunderstorms Likely

    • 52
    • 69

    Thunderstorms Likely

    • 53
    • 73

    Chance Thunderstorms

Today 11 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a 40 percent chance of Thunderstorms. Patchy smoke. Highs 79 to 89.

Tonight 11 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a slight chance of Thunderstorms early in the Evening, then mostly cloudy overnight. Patchy smoke through the night. Lows 53 to 63. Chance of precipitation 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

August Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 5 August, 2026

    50 °F

  • Average August

    77.9 °F

  • Highest 2 August, 2026

    104 °F

Climate (2021–2026)

Boulder Municipal Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    66.3 °F
Get WillyWeather+ to remove ads