Boulder December Weather Averages

Colorado, United States of America

December Weather Averages for Boulder

High Temp3°C38°F
Low Temp-7°C19°F
Avg Temp-2°C28°F
Sunshine Hours275 hours 
Rainfall21.95 mm0.86 In
Rain days5 days 
Pressure1019 mb31 In

 

Boulder December Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
2009-1°C / 30°F-11°C / 12°F-7°C / 20°F273 hours20.40 mm / 0.80 In6 days1020 mb / 31 In
20104°C / 40°F-7°C / 19°F-2°C / 28°F318 hours23.10 mm / 0.91 In4 days1017 mb / 31 In
20110°C / 33°F-11°C / 12°F-6°C / 21°F291 hours32.40 mm / 1.28 In6 days1025 mb / 31 In
20123°C / 38°F-8°C / 18°F-3°C / 26°F230 hours20.70 mm / 0.81 In6 days1017 mb / 31 In
20131°C / 34°F-10°C / 13°F-6°C / 22°F317 hours17.58 mm / 0.69 In3 days1022 mb / 31 In
20144°C / 38°F-8°C / 18°F-3°C / 27°F250 hours31.40 mm / 1.24 In7 days1021 mb / 31 In
2015-0°C / 32°F-10°C / 14°F-6°C / 22°F219 hours28.23 mm / 1.11 In7 days1018 mb / 31 In
2016-0°C / 32°F-11°C / 12°F-6°C / 21°F271 hours31.20 mm / 1.23 In8 days1021 mb / 31 In
20175°C / 40°F-6°C / 21°F-1°C / 29°F320 hours11.90 mm / 0.47 In4 days1022 mb / 31 In
20183°C / 37°F-8°C / 18°F-3°C / 26°F297 hours13.10 mm / 0.52 In3 days1021 mb / 31 In
20191°C / 34°F-7°C / 19°F-4°C / 25°F268 hours11.60 mm / 0.46 In4 days1020 mb / 31 In
20204°C / 40°F-6°C / 22°F-1°C / 30°F266 hours14.50 mm / 0.57 In4 days1022 mb / 31 In
20219°C / 48°F-3°C / 26°F2°C / 36°F281 hours20.30 mm / 0.80 In4 days1009 mb / 30 In
20224°C / 38°F-9°C / 16°F-3°C / 26°F251 hours33.40 mm / 1.31 In6 days1015 mb / 30 In
20236°C / 43°F-3°C / 27°F1°C / 34°F245 hours22.62 mm / 0.89 In7 days1018 mb / 31 In
20248°C / 46°F-2°C / 29°F3°C / 37°F288 hours0.09 mm / 0.00 In0 days1018 mb / 31 In
20259°C / 49°F1°C / 33°F5°C / 40°F286 hours40.70 mm / 1.60 In0 days1015 mb / 30 In

Need more than one day of Boulder history?

Download historical weather for Boulder, or any other location, in CSV from January 2009 onwards. Ideal for research, insurance, energy, agriculture and machine-learning projects.

  • Historical weatherDaily and hourly interval data.
  • Yearly monthly averagesMonthly averages for every year since 2009.
  • Monthly climate averagesLong-term climate normals by month.
  • CSV formatReady for Excel, Python, R or your database.
Buy historical weather data Or use the History API

Weather history near Boulder

Region

Colorado

See the Boulder 14-day forecast »

Hotels near Boulder

Boulder weather history: common questions

How far back does Boulder weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Boulder historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

Get your free weather API key in a minute

100,000 calls a month, free for commercial use. No credit card.

Sign up free Read the docs