Groton Weather History Connecticut, United States of America

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
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Tue 11 Aug, 2026 Weather in Groton

Sunrise: 05:53 AM Sunset: 07:53 PM	Moonrise: 03:49 AM Moonset: 07:17 PM	Max: 31.0 °c	Min: 20.9 °c	Avg: 25.2 °c	Precip: 0.40 mm	Max Wind: 16.6 kph

	Tue 11 0:00 am	Tue 11 3:00 am	Tue 11 6:00 am	Tue 11 9:00 am	Tue 11 12:00 pm	Tue 11 3:00 pm	Tue 11 6:00 pm	Tue 11 9:00 pm
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Temp	22.5°c	21.7°c	20.9°c	24.6°c	30.0°c	31.0°c	27.5°c	23.2°c
Wind	12.2 kmph	15.5 kmph	8.3 kmph	8.6 kmph	14.0 kmph	14.0 kmph	16.6 kmph	11.5 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.20 mm	0.00 mm
Cloud	2%	0%	5%	0%	5%	0%	89%	0%
Humidity	91%	92%	94%	80%	61%	47%	51%	83%
Pressure	1012 mb	1011 mb	1011 mb	1012 mb	1010 mb	1009 mb	1008 mb	1009 mb

Groton Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	3°C / 37°F	-3°C / 26°F	0°C / 32°F	178 hours	106.71 mm / 4.20 In	7 days	1016 mb / 30 In
February	4°C / 38°F	-3°C / 27°F	0°C / 33°F	146 hours	121.17 mm / 4.77 In	7 days	1017 mb / 30 In
March	7°C / 45°F	1°C / 33°F	4°C / 39°F	163 hours	145.92 mm / 5.74 In	7 days	1017 mb / 31 In
April	13°C / 55°F	6°C / 42°F	9°C / 48°F	164 hours	119.72 mm / 4.71 In	7 days	1016 mb / 30 In
May	18°C / 64°F	11°C / 51°F	14°C / 57°F	176 hours	129.85 mm / 5.11 In	7 days	1016 mb / 30 In
June	23°C / 73°F	15°C / 59°F	19°C / 66°F	190 hours	119.76 mm / 4.72 In	8 days	1014 mb / 30 In
July	27°C / 80°F	19°C / 67°F	23°C / 73°F	209 hours	118.14 mm / 4.65 In	8 days	1014 mb / 30 In
August	26°C / 79°F	19°C / 66°F	22°C / 72°F	233 hours	116.07 mm / 4.57 In	7 days	1015 mb / 30 In
September	23°C / 73°F	16°C / 60°F	19°C / 66°F	209 hours	104.34 mm / 4.11 In	6 days	1018 mb / 31 In
October	17°C / 63°F	11°C / 51°F	14°C / 57°F	184 hours	140.09 mm / 5.52 In	6 days	1017 mb / 31 In
November	11°C / 52°F	5°C / 40°F	8°C / 46°F	203 hours	112.82 mm / 4.44 In	6 days	1018 mb / 31 In
December	6°C / 43°F	0°C / 33°F	3°C / 38°F	171 hours	172.54 mm / 6.79 In	7 days	1018 mb / 31 In

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