Jamestown Weather Forecast

    • 59
    • 79

    Chance Thunderstorms

    • 56
    • 76

    Chance Thunderstorms

    • 54
    • 71

    Rain Showers Likely

    • 53
    • 74

    Chance Thunderstorms

    • 55
    • 75

    Partly Sunny

    • 56
    • 76

    Slight Chance Thunderstorms

Today 29 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Chance of Thunderstorms in the afternoon. Highs 76 to 86. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 30 percent.

Tonight 29 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Lows 54 to 64.

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Jamestown Temperature Statistics

August Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 5 August, 2026

    50 °F

  • Average August

    76.2 °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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