Jamestown Weather Forecast

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    Chance Thunderstorms

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    • 62

    Chance Thunderstorms

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    • 68

    Slight Chance Thunderstorms

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    • 68

    Chance Thunderstorms

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    • 69

    Chance Thunderstorms

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    Chance Thunderstorms

Today 29 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Chance of Thunderstorms in the afternoon. Highs 65 to 75. Chance of precipitation 40 percent.

Tonight 29 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a chance of Showers and slight chance of Thunderstorms in the Evening, then partly cloudy with a slight chance of Showers after midnight. Lows 40 to 50. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

May Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 1 May, 2026

    32 °F

  • Average May

    58.2 °F

  • Highest 11 May, 2026

    87.8 °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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