Jamestown Weather Forecast

    • 55
    • 79

    Slight Chance Thunderstorms

    • 54
    • 79

    Partly Sunny

    • 53
    • 74

    Chance Thunderstorms

    • 52
    • 80

    Partly Sunny

    • 47
    • 71

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 48
    • 72

    Slight Chance Thunderstorms

Today 6 Jun Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Slight chance of Showers early in the Afternoon, then a slight chance of Thunderstorms late in the afternoon. Highs 77 to 87. South Winds 10 to 15 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 6 Jun Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a slight chance of Showers early in the Evening, then partly cloudy overnight. Lows 48 to 58. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

June Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 2 June, 2026

    51.8 °F

  • Average June

    68.6 °F

  • Highest 4 June, 2026

    89.6 °F

Climate (2021–Present)

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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