Jamestown Weather Forecast

    • 52
    • 88

    Slight Chance Thunderstorms

    • 52
    • 68

    Slight Chance Thunderstorms

    • 51
    • 72

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

    • 63
    • 87

    Mostly Sunny

Today 3 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Patchy smoke early in the morning. Patchy smoke in the afternoon. Slight chance of Thunderstorms in the afternoon. Highs 84 to 94. West Winds 10 to 15 Mph with Gusts up to 25 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 3 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Slight chance of Showers in the evening. Patchy smoke through the night. Lows 44 to 54. North Winds 10 to 15 Mph with Gusts up to 25 Mph in the Evening, becoming light. Chance of rain 20 percent.

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Jamestown Temperature Statistics

August Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 1 August, 2026

    60.8 °F

  • Average August

    78.5 °F

  • Highest 1 August, 2026

    95 °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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