Groton December Weather Averages

Massachusetts, United States of America

December Weather Averages for Groton

High Temp4°C39°F
Low Temp-3°C27°F
Avg Temp0°C32°F
Sunshine Hours170 hours 
Rainfall140.98 mm5.55 In
Rain days8 days 
Pressure1017 mb31 In

 

Groton December Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
20091°C / 34°F-6°C / 22°F-2°C / 28°F173 hours141.28 mm / 5.56 In9 days1016 mb / 30 In
20101°C / 33°F-5°C / 22°F-2°C / 28°F174 hours105.40 mm / 4.15 In9 days1009 mb / 30 In
20116°C / 42°F-1°C / 30°F2°C / 36°F219 hours110.70 mm / 4.36 In5 days1020 mb / 31 In
20125°C / 40°F-2°C / 29°F1°C / 34°F165 hours141.45 mm / 5.57 In10 days1016 mb / 30 In
20132°C / 35°F-5°C / 23°F-2°C / 29°F146 hours120.54 mm / 4.75 In11 days1019 mb / 31 In
20144°C / 39°F-2°C / 29°F1°C / 34°F137 hours116.29 mm / 4.58 In12 days1020 mb / 31 In
20159°C / 48°F2°C / 36°F5°C / 41°F122 hours108.26 mm / 4.26 In8 days1019 mb / 31 In
20163°C / 37°F-4°C / 25°F-1°C / 31°F194 hours101.07 mm / 3.98 In8 days1018 mb / 31 In
20171°C / 34°F-6°C / 20°F-3°C / 26°F179 hours78.66 mm / 3.10 In6 days1017 mb / 31 In
20184°C / 40°F-3°C / 27°F1°C / 33°F221 hours88.02 mm / 3.47 In4 days1019 mb / 31 In
20193°C / 37°F-4°C / 24°F-1°C / 31°F160 hours212.43 mm / 8.36 In12 days1017 mb / 31 In
20204°C / 39°F-3°C / 26°F0°C / 33°F127 hours186.92 mm / 7.36 In7 days1016 mb / 30 In
20216°C / 42°F-2°C / 29°F2°C / 35°F149 hours61.10 mm / 2.41 In10 days1016 mb / 30 In
20225°C / 41°F-2°C / 28°F1°C / 34°F211 hours130.40 mm / 5.13 In8 days1020 mb / 31 In
20237°C / 45°F0°C / 32°F3°C / 38°F151 hours168.56 mm / 6.64 In7 days1019 mb / 31 In
20243°C / 38°F-2°C / 28°F0°C / 32°F194 hours276.36 mm / 10.88 In7 days1021 mb / 31 In
20251°C / 34°F-5°C / 23°F-2°C / 29°F176 hours249.20 mm / 9.81 In4 days1014 mb / 30 In

Need more than one day of Groton history?

Download historical weather for Groton, 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 Groton

Region

Massachusetts

See the Groton 14-day forecast »

Hotels near Groton

Groton weather history: common questions

How far back does Groton 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 Groton 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.

Quick and Easy Signup for Weather API

WeatherAPI.com makes it super easy to integrate our realtime, daily, hourly and 15 min interval weather forecast data, historical weather, marine weather, bulk request, air quality data, pollen, evapotranspiration, autocomplete, time zone, astronomy and sports data into your new or existing project.
Get Started