Jamestown Weather Forecast

    • 50
    • 71

    Chance Thunderstorms

    • 47
    • 67

    Chance Thunderstorms

    • 48
    • 62

    Rain Showers

    • 49
    • 67

    Chance Thunderstorms

    • 48
    • 67

    Chance Thunderstorms

    • 48
    • 64

    Chance Thunderstorms

    • 47
    • 63

    Rain Showers Likely

Today 25 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy with a 40 percent chance of Thunderstorms. Highs 69 to 79.

Tonight 25 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Slight chance of Showers early in the evening. Lows 43 to 53. Chance of rain 20 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

    56.8 °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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