Groton December Weather Averages Connecticut, United States of America

December Weather Averages for Groton

High Temp	6°C	43°F
Low Temp	1°C	33°F
Avg Temp	3°C	38°F
Sunshine Hours	170 hours
Rainfall	159.82 mm	6.29 In
Rain days	7 days
Pressure	1018 mb	31 In

Groton December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	7°C / 44°F	0°C / 32°F	3°C / 38°F	178 hours	220.52 mm / 8.68 In	12 days	1019 mb / 31 In
2009	4°C / 39°F	-1°C / 30°F	1°C / 35°F	203 hours	219.21 mm / 8.63 In	9 days	1017 mb / 30 In
2010	2°C / 36°F	-3°C / 27°F	0°C / 32°F	183 hours	134.43 mm / 5.29 In	4 days	1009 mb / 30 In
2011	8°C / 47°F	2°C / 36°F	5°C / 42°F	231 hours	121.71 mm / 4.79 In	6 days	1021 mb / 31 In
2012	7°C / 45°F	2°C / 36°F	5°C / 41°F	159 hours	153.12 mm / 6.03 In	9 days	1016 mb / 30 In
2013	5°C / 41°F	-1°C / 31°F	2°C / 36°F	157 hours	130.62 mm / 5.14 In	10 days	1019 mb / 31 In
2014	6°C / 43°F	2°C / 35°F	4°C / 39°F	115 hours	134.70 mm / 5.30 In	9 days	1019 mb / 31 In
2015	11°C / 52°F	6°C / 43°F	8°C / 47°F	111 hours	114.12 mm / 4.49 In	7 days	1019 mb / 31 In
2016	5°C / 41°F	-1°C / 31°F	2°C / 36°F	163 hours	92.27 mm / 3.63 In	7 days	1019 mb / 31 In
2017	3°C / 38°F	-2°C / 28°F	0°C / 33°F	162 hours	66.57 mm / 2.62 In	8 days	1018 mb / 31 In
2018	6°C / 43°F	0°C / 32°F	3°C / 38°F	198 hours	138.15 mm / 5.44 In	5 days	1019 mb / 31 In
2019	5°C / 41°F	-1°C / 31°F	2°C / 36°F	177 hours	209.18 mm / 8.24 In	8 days	1017 mb / 31 In
2020	6°C / 42°F	0°C / 32°F	3°C / 38°F	152 hours	213.68 mm / 8.41 In	8 days	1016 mb / 30 In
2021	8°C / 47°F	2°C / 36°F	5°C / 41°F	166 hours	42.40 mm / 1.67 In	7 days	1017 mb / 31 In
2022	6°C / 44°F	0°C / 33°F	3°C / 38°F	196 hours	125.70 mm / 4.95 In	6 days	1020 mb / 31 In
2023	8°C / 47°F	3°C / 37°F	6°C / 42°F	168 hours	149.92 mm / 5.90 In	6 days	1019 mb / 31 In
2024	6°C / 42°F	0°C / 32°F	3°C / 37°F	180 hours	511.29 mm / 20.13 In	9 days	1021 mb / 31 In

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