Potomac December Weather Averages Maryland, United States of America

December Weather Averages for Potomac

High Temp	8°C	46°F
Low Temp	1°C	34°F
Avg Temp	4°C	39°F
Sunshine Hours	177 hours
Rainfall	114.72 mm	4.52 In
Rain days	7 days
Pressure	1020 mb	31 In

Potomac December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	5°C / 40°F	-2°C / 28°F	1°C / 34°F	197 hours	180.01 mm / 7.09 In	7 days	1019 mb / 31 In
2010	2°C / 35°F	-4°C / 24°F	-2°C / 29°F	215 hours	69.22 mm / 2.73 In	5 days	1016 mb / 30 In
2011	9°C / 49°F	2°C / 35°F	5°C / 42°F	228 hours	137.73 mm / 5.42 In	5 days	1022 mb / 31 In
2012	9°C / 48°F	2°C / 36°F	5°C / 42°F	185 hours	81.37 mm / 3.20 In	7 days	1017 mb / 31 In
2013	7°C / 44°F	0°C / 32°F	3°C / 38°F	168 hours	161.72 mm / 6.37 In	9 days	1021 mb / 31 In
2014	7°C / 45°F	1°C / 33°F	4°C / 39°F	145 hours	86.00 mm / 3.39 In	10 days	1022 mb / 31 In
2015	13°C / 56°F	6°C / 43°F	9°C / 49°F	129 hours	125.21 mm / 4.93 In	9 days	1019 mb / 31 In
2016	7°C / 44°F	0°C / 31°F	3°C / 37°F	189 hours	57.90 mm / 2.28 In	6 days	1022 mb / 31 In
2017	6°C / 43°F	-1°C / 31°F	3°C / 37°F	200 hours	36.50 mm / 1.44 In	4 days	1020 mb / 31 In
2018	8°C / 47°F	2°C / 35°F	5°C / 41°F	144 hours	166.38 mm / 6.55 In	9 days	1020 mb / 31 In
2019	8°C / 46°F	1°C / 35°F	4°C / 40°F	181 hours	96.72 mm / 3.81 In	12 days	1019 mb / 31 In
2020	7°C / 44°F	1°C / 33°F	4°C / 38°F	182 hours	194.71 mm / 7.67 In	6 days	1018 mb / 31 In
2021	12°C / 53°F	4°C / 39°F	7°C / 45°F	179 hours	33.10 mm / 1.30 In	5 days	1019 mb / 31 In
2022	7°C / 45°F	0°C / 32°F	3°C / 38°F	167 hours	121.60 mm / 4.79 In	7 days	1022 mb / 31 In
2023	10°C / 50°F	3°C / 38°F	6°C / 43°F	150 hours	172.67 mm / 6.80 In	7 days	1021 mb / 31 In

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