Groton Weather History

Connecticut, United States of America

Weather on a past date in Groton

Any date from 1 January 2009 to yesterday.

Tue 10 Nov, 2026 Weather in Groton

Sunrise: 06:30 AM
Sunset: 04:33 PM		Moonrise: 08:18 AM
Moonset: 05:10 PM		Max:
13.0 °c		Min:
6.5 °c		Avg:
10.0 °c		Precip:
0.00 mm		Max Wind:
21.6 kph
 
Tue 10
0:00 am
Tue 10
3:00 am
Tue 10
6:00 am
Tue 10
9:00 am
Tue 10
12:00 pm
Tue 10
3:00 pm
Tue 10
6:00 pm
Tue 10
9:00 pm
IconClearPartly cloudyPartly cloudyCloudyPartly cloudySunnyClearClear
Temp9.4°c8.4°c6.7°c9.5°c12.1°c12.7°c11.5°c10.9°c
Wind21.1 kmph17.0 kmph13.7 kmph15.5 kmph20.2 kmph20.2 kmph20.2 kmph21.6 kmph
Precip0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm
Cloud5%34%42%80%43%15%0%0%
Humidity72%74%78%69%60%62%72%72%
Pressure1014 mb1014 mb1014 mb1014 mb1011 mb1010 mb1010 mb1011 mb

Groton Annual Weather Averages

MonthHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
January3°C / 37°F-3°C / 26°F-0°C / 32°F177 hours106.71 mm / 4.20 In7 days1016 mb / 30 In
February4°C / 38°F-3°C / 27°F0°C / 33°F146 hours121.17 mm / 4.77 In8 days1017 mb / 30 In
March7°C / 45°F1°C / 33°F4°C / 39°F165 hours145.92 mm / 5.74 In7 days1017 mb / 31 In
April13°C / 55°F6°C / 42°F9°C / 48°F166 hours120.53 mm / 4.75 In7 days1016 mb / 30 In
May18°C / 64°F11°C / 51°F14°C / 57°F191 hours129.85 mm / 5.11 In8 days1016 mb / 30 In
June23°C / 73°F15°C / 59°F19°C / 66°F211 hours119.76 mm / 4.72 In8 days1014 mb / 30 In
July27°C / 80°F19°C / 67°F23°C / 73°F229 hours118.16 mm / 4.65 In8 days1014 mb / 30 In
August26°C / 79°F19°C / 66°F22°C / 72°F234 hours117.05 mm / 4.61 In7 days1015 mb / 30 In
September23°C / 73°F16°C / 60°F19°C / 66°F205 hours108.68 mm / 4.28 In6 days1018 mb / 31 In
October17°C / 63°F11°C / 51°F14°C / 57°F185 hours135.97 mm / 5.35 In6 days1017 mb / 31 In
November11°C / 52°F5°C / 40°F8°C / 46°F203 hours112.82 mm / 4.44 In6 days1018 mb / 31 In
December6°C / 43°F0°C / 33°F3°C / 38°F171 hours172.54 mm / 6.79 In7 days1018 mb / 31 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

Connecticut

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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.

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