Jamestown Weather Forecast

    • 51
    • 69

    Thunderstorms Likely

    • 53
    • 72

    Chance Thunderstorms

    • 57
    • 76

    Partly Sunny

    • 57
    • 80

    Chance Thunderstorms

    • 54
    • 74

    Thunderstorms Likely

    • 57
    • 78

    Slight Chance Thunderstorms

    • 57
    • 79

    Chance Thunderstorms

Today 15 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Highs 67 to 77. Chance of precipitation 70 percent.

Tonight 15 Aug Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Patchy fog towards Sunrise. Lows 45 to 55.

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Jamestown Temperature Statistics

August Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 5 August, 2026

    50 °F

  • Average August

    77.8 °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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