Jamestown Weather Forecast

    • 62
    • 84

    Chance Thunderstorms

    • 62
    • 83

    Chance Thunderstorms

    • 61
    • 82

    Chance Thunderstorms

    • 54
    • 77

    Thunderstorms Likely

    • 51
    • 68

    Rain Showers

    • 50
    • 67

    Rain Showers

Today 9 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a 30 percent chance of Thunderstorms. Areas of smoke. Highs 80 to 90. West Winds 10 to 15 Mph with Gusts up to 20 Mph.

Tonight 9 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Slight chance of Thunderstorms early in the Evening, then a slight chance of Showers during the late evening hours. Areas of smoke through the night. Lows 55 to 65. Chance of rain 20 percent.

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  • 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)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    66.3 °F
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