Jamestown Weather Forecast

    • 30
    • 42

    Mostly Sunny

    • 37
    • 52

    Mostly Cloudy

    • 37
    • 48

    Chance Rain

    • 34
    • 47

    Mostly Cloudy

    • 32
    • 50

    Partly Sunny

    • 29
    • 46

    Partly Sunny

Today 30 Dec Larimer and Boulder Counties Between 6000 and 9000 Feet

Mostly sunny. Highs 39 to 49.

Tonight 30 Dec Larimer and Boulder Counties Between 6000 and 9000 Feet

Partly cloudy. Lows 21 to 29.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

December Temperature

Boulder Municipal Airport (9.9 miles)

  • Lowest 4 December, 2025

    10.4 °F

  • Average December

    45.4 °F

  • Highest 22 December, 2025

    71.6 °F

Climate (2020–Present)

Boulder Municipal Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    65.3 °F
Get WillyWeather+ to remove ads