Jamestown Weather Forecast

    • 55
    • 78

    Chance Thunderstorms

    • 54
    • 74

    Rain Showers Likely

    • 57
    • 76

    Chance Thunderstorms

    • 60
    • 82

    Slight Chance Thunderstorms

    • 59
    • 81

    Chance Rain Showers

    • 55
    • 77

    Chance Thunderstorms

Today 25 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy in the Morning, then mostly cloudy with a chance of Thunderstorms in the afternoon. Highs 72 to 82. Chance of precipitation 50 percent.

Tonight 25 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Lows 50 to 60.

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

    76.5 °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

    66.4 °F
Get WillyWeather+ to remove ads