Jamestown Weather Forecast

    • 47
    • 57

    Rain Showers Likely

    • 48
    • 65

    Chance Thunderstorms

    • 46
    • 70

    Rain Showers Likely

    • 44
    • 66

    Chance Thunderstorms

    • 45
    • 67

    Chance Thunderstorms

    • 47
    • 67

    Rain Showers Likely

    • 47
    • 67

    Rain Showers Likely

Today 27 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Showers likely and chance of Thunderstorms. Highs 55 to 65. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 60 percent.

Tonight 27 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly cloudy. Chance of Showers and slight chance of Thunderstorms early in the Evening, then a chance of Showers during the late evening hours. Lows 42 to 52. Chance of rain 50 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

    57.8 °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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