Jamestown Weather Forecast

    • 58
    • 77

    Chance Thunderstorms

    • 60
    • 82

    Slight Chance Thunderstorms

    • 60
    • 81

    Chance Rain Showers

    • 55
    • 77

    Chance Thunderstorms

    • 52
    • 73

    Rain Showers Likely

    • 54
    • 75

    Chance Thunderstorms

Today 27 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Slight chance of Thunderstorms in the afternoon. Highs 75 to 85. Chance of precipitation 20 percent.

Tonight 27 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Lows 47 to 57.

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  • 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

    76.6 °F

  • Highest 2 August, 2026

    104 °F

Climate (2021–2026)

Boulder Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    66.4 °F
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