Jamestown Weather Forecast

    • 57
    • 76

    Chance Thunderstorms

    • 55
    • 80

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

Today 26 Jun 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 73 to 81. Southwest Winds 10 to 15 Mph with Gusts up to 20 Mph in the afternoon. Chance of precipitation 40 percent.

Tonight 26 Jun Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Slight chance of Showers after midnight. Lows 44 to 54. Chance of rain 10 percent.

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Jamestown Temperature Statistics

June Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 14 June, 2026

    48.2 °F

  • Average June

    70.8 °F

  • Highest 6 June, 2026

    95 °F

Climate (2021–2026)

Boulder Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    66.2 °F
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