Jamestown Weather Forecast

    • 60
    • 78

    Thunderstorms Likely

    • 59
    • 78

    Rain Showers

    • 60
    • 81

    Chance Thunderstorms

    • 60
    • 82

    Chance Thunderstorms

    • 60
    • 81

    Mostly Sunny

    • 63
    • 86

    Mostly Sunny

Today 28 Jul Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy in the Morning, then Thunderstorms likely in the afternoon. Highs 76 to 86. Chance of precipitation 70 percent.

Tonight 28 Jul Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 53 to 63. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

July Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 1 July, 2026

    55.4 °F

  • Average July

    78.6 °F

  • Highest 25 July, 2026

    102.2 °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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