Jamestown Weather Forecast

    • 25
    • 34

    Snow Showers

    • 31
    • 37

    Rain/Snow

    • 32
    • 47

    Rain Showers

    • 35
    • 56

    Rain Showers Likely

    • 36
    • 57

    Chance Thunderstorms

    • 41
    • 64

    Partly Sunny

    • 45
    • 69

    Partly Sunny

Today 18 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Snow Showers and slight chance of Thunderstorms. New snow accumulation of 3 to 5 Inches. Highs 30 to 36. Northeast Winds 10 to 15 Mph with Gusts up to 20 Mph.

Tonight 18 May Larimer and Boulder Counties Between 6000 and 9000 Feet

Patchy fog through the night. Snow Showers likely in the evening. Chance of snow Showers after midnight. New snow accumulation of 1 to 2 Inches. Lows 20 to 28. Chance of snow 70 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

    59.8 °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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