Jamestown Weather Forecast

    • 59
    • 79

    Rain Showers Likely

    • 60
    • 81

    Chance Thunderstorms

    • 57
    • 79

    Rain Showers Likely

    • 55
    • 77

    Rain Showers Likely

    • 56
    • 77

    Chance Thunderstorms

    • 57
    • 79

    Chance Thunderstorms

Today 22 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy in the Morning, then Showers likely and chance of Thunderstorms in the afternoon. Highs 76 to 86. Southeast Winds 10 to 15 Mph in the afternoon. Chance of rain 60 percent.

Tonight 22 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly 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

    66.3 °F
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