Jamestown Weather Forecast

    • 60
    • 81

    Chance Thunderstorms

    • 56
    • 80

    Chance Thunderstorms

    • 56
    • 75

    Rain Showers Likely

    • 56
    • 76

    Rain Showers Likely

    • 57
    • 79

    Chance Thunderstorms

    • 58
    • 80

    Slight Chance Thunderstorms

Today 23 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 78 to 88. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 40 percent.

Tonight 23 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Slight chance of Showers after midnight. Lows 52 to 62. Chance of rain 20 percent.

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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

    76.3 °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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