Skip to main content

Jamestown town, Colorado

Official LSAD Designation: Jamestown town • Census GEOID: 0839195 • Boulder County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Jamestown town.

Reference Weather Station: BOULDER 14 W, CO US (ID: USW00094075) • Located 9.8 miles from community center • Elevation: 2,995.6 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 28.6° 11.8° 20.2° 2.67"
February 27.8° 11.5° 19.6° 2.77"
March 35.6° 16.7° 26.1° 3.68"
April 40.3° 21.5° 30.9° 4.83"
May 50.1° 28.6° 39.4° 3.82"
June 61.8° 35.9° 48.9° 1.95"
July 67.9° 42.5° 55.2° 3.04"
August 65.8° 40.8° 53.3° 2.51"
September 58.5° 33.6° 46.0° 2.01"
October 46.8° 26.0° 36.4° 2.17"
November 35.3° 19.1° 27.2° 2.26"
December 28.0° 11.5° 19.7° 2.15"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station BOULDER 14 W, CO US (ID: USW00094075) • 9.8 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at BOULDER 14 W, CO US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 21.0 28.5 36.0 43.5 51.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 35.0°F 2011: Annual mean 34.6°F 2012: Annual mean 37.2°F 2013: Annual mean 34.2°F 2015: Annual mean 36.4°F 2016: Annual mean 36.6°F 2017: Annual mean 37.0°F 2018: Annual mean 36.2°F 2019: Annual mean 34.8°F 2020: Annual mean 36.2°F 2021: Annual mean 36.1°F 2022: Annual mean 35.3°F 2023: Annual mean 35.1°F 2024: Annual mean 37.1°F 2025: Annual mean 37.7°F 2010: Annual mean of daily highs 45.2°F 2011: Annual mean of daily highs 44.6°F 2012: Annual mean of daily highs 47.9°F 2013: Annual mean of daily highs 44.0°F 2015: Annual mean of daily highs 46.5°F 2016: Annual mean of daily highs 47.1°F 2017: Annual mean of daily highs 47.2°F 2018: Annual mean of daily highs 46.8°F 2019: Annual mean of daily highs 45.4°F 2020: Annual mean of daily highs 47.4°F 2021: Annual mean of daily highs 46.6°F 2022: Annual mean of daily highs 45.9°F 2023: Annual mean of daily highs 45.4°F 2024: Annual mean of daily highs 47.9°F 2025: Annual mean of daily highs 48.3°F 2010: Annual mean of daily lows 24.9°F 2011: Annual mean of daily lows 24.6°F 2012: Annual mean of daily lows 26.5°F 2013: Annual mean of daily lows 24.5°F 2015: Annual mean of daily lows 26.4°F 2016: Annual mean of daily lows 26.0°F 2017: Annual mean of daily lows 26.9°F 2018: Annual mean of daily lows 25.5°F 2019: Annual mean of daily lows 24.2°F 2020: Annual mean of daily lows 25.0°F 2021: Annual mean of daily lows 25.6°F 2022: Annual mean of daily lows 24.7°F 2023: Annual mean of daily lows 24.7°F 2024: Annual mean of daily lows 26.4°F 2025: Annual mean of daily lows 27.1°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 35.0 45.2 24.9
2011 34.6 44.6 24.6
2012 37.2 47.9 26.5
2013 34.2 44.0 24.5
2014 Unavailable Unavailable Unavailable
2015 36.4 46.5 26.4
2016 36.6 47.1 26.0
2017 37.0 47.2 26.9
2018 36.2 46.8 25.5
2019 34.8 45.4 24.2
2020 36.2 47.4 25.0
2021 36.1 46.6 25.6
2022 35.3 45.9 24.7
2023 35.1 45.4 24.7
2024 37.1 47.9 26.4
2025 37.7 48.3 27.1
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.