Chelmsford December Weather Averages Massachusetts, United States of America

December Weather Averages for Chelmsford

High Temp	4°C	40°F
Low Temp	-2°C	28°F
Avg Temp	1°C	34°F
Sunshine Hours	170 hours
Rainfall	132.95 mm	5.23 In
Rain days	8 days
Pressure	1017 mb	31 In

Chelmsford December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	4°C / 38°F	-4°C / 25°F	0°C / 32°F	141 hours	175.91 mm / 6.93 In	10 days	1018 mb / 31 In
2009	1°C / 35°F	-5°C / 24°F	-2°C / 29°F	179 hours	144.33 mm / 5.68 In	8 days	1016 mb / 30 In
2010	1°C / 34°F	-5°C / 24°F	-2°C / 29°F	165 hours	101.71 mm / 4.00 In	9 days	1009 mb / 30 In
2011	6°C / 43°F	0°C / 31°F	3°C / 37°F	224 hours	105.34 mm / 4.15 In	5 days	1020 mb / 31 In
2012	5°C / 41°F	-1°C / 30°F	2°C / 36°F	161 hours	137.45 mm / 5.41 In	11 days	1015 mb / 30 In
2013	2°C / 36°F	-4°C / 24°F	-1°C / 30°F	149 hours	119.87 mm / 4.72 In	11 days	1019 mb / 31 In
2014	4°C / 40°F	-1°C / 30°F	2°C / 35°F	117 hours	114.10 mm / 4.49 In	10 days	1019 mb / 31 In
2015	9°C / 48°F	3°C / 37°F	6°C / 42°F	126 hours	115.63 mm / 4.55 In	8 days	1019 mb / 31 In
2016	3°C / 38°F	-3°C / 26°F	0°C / 32°F	208 hours	101.04 mm / 3.98 In	8 days	1018 mb / 31 In
2017	1°C / 34°F	-6°C / 22°F	-3°C / 27°F	185 hours	79.28 mm / 3.12 In	6 days	1017 mb / 31 In
2018	5°C / 40°F	-2°C / 28°F	1°C / 34°F	230 hours	86.14 mm / 3.39 In	4 days	1019 mb / 31 In
2019	3°C / 38°F	-3°C / 26°F	0°C / 32°F	166 hours	216.57 mm / 8.53 In	11 days	1017 mb / 31 In
2020	4°C / 40°F	-2°C / 28°F	1°C / 34°F	132 hours	177.58 mm / 6.99 In	6 days	1015 mb / 30 In
2021	6°C / 43°F	-1°C / 30°F	2°C / 36°F	149 hours	69.70 mm / 2.74 In	9 days	1016 mb / 30 In
2022	5°C / 42°F	-1°C / 30°F	2°C / 35°F	196 hours	125.35 mm / 4.94 In	8 days	1020 mb / 31 In
2023	7°C / 45°F	1°C / 33°F	4°C / 38°F	146 hours	164.84 mm / 6.49 In	8 days	1019 mb / 31 In
2024	3°C / 37°F	-2°C / 28°F	0°C / 33°F	191 hours	268.21 mm / 10.56 In	7 days	1021 mb / 31 In

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