Longmont December Weather Averages Colorado, United States of America

December Weather Averages for Longmont

High Temp	5°C	40°F
Low Temp	-6°C	21°F
Avg Temp	-2°C	29°F
Sunshine Hours	272 hours
Rainfall	19.61 mm	0.77 In
Rain days	5 days
Pressure	1019 mb	31 In

Longmont December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	3°C / 37°F	-8°C / 17°F	-3°C / 26°F	288 hours	19.80 mm / 0.78 In	7 days	1017 mb / 31 In
2009	0°C / 31°F	-10°C / 13°F	-6°C / 21°F	270 hours	20.30 mm / 0.80 In	5 days	1020 mb / 31 In
2010	6°C / 43°F	-5°C / 23°F	0°C / 31°F	320 hours	17.80 mm / 0.70 In	3 days	1017 mb / 31 In
2011	2°C / 35°F	-10°C / 14°F	-5°C / 23°F	307 hours	27.90 mm / 1.10 In	6 days	1025 mb / 31 In
2012	4°C / 40°F	-6°C / 20°F	-2°C / 28°F	248 hours	23.58 mm / 0.93 In	8 days	1017 mb / 30 In
2013	3°C / 37°F	-9°C / 17°F	-4°C / 25°F	319 hours	14.60 mm / 0.57 In	4 days	1022 mb / 31 In
2014	5°C / 41°F	-6°C / 20°F	-2°C / 29°F	260 hours	27.20 mm / 1.07 In	5 days	1021 mb / 31 In
2015	2°C / 35°F	-9°C / 16°F	-4°C / 24°F	217 hours	30.51 mm / 1.20 In	8 days	1018 mb / 31 In
2016	2°C / 35°F	-10°C / 15°F	-5°C / 24°F	261 hours	34.50 mm / 1.36 In	9 days	1021 mb / 31 In
2017	6°C / 44°F	-5°C / 23°F	0°C / 32°F	301 hours	10.70 mm / 0.42 In	3 days	1022 mb / 31 In
2018	5°C / 40°F	-5°C / 22°F	-1°C / 29°F	297 hours	10.30 mm / 0.41 In	2 days	1021 mb / 31 In
2019	3°C / 37°F	-5°C / 22°F	-2°C / 28°F	269 hours	14.40 mm / 0.57 In	3 days	1020 mb / 31 In
2020	6°C / 42°F	-5°C / 23°F	0°C / 31°F	263 hours	16.10 mm / 0.63 In	3 days	1022 mb / 31 In
2021	10°C / 50°F	-3°C / 27°F	3°C / 37°F	276 hours	23.50 mm / 0.93 In	5 days	1009 mb / 30 In
2022	4°C / 39°F	-9°C / 16°F	-3°C / 26°F	223 hours	31.80 mm / 1.25 In	6 days	1018 mb / 31 In
2023	7°C / 45°F	-3°C / 27°F	2°C / 35°F	245 hours	10.49 mm / 0.41 In	5 days	1018 mb / 31 In
2024	9°C / 47°F	-2°C / 28°F	2°C / 36°F	275 hours	0.00 mm / 0.00 In	0 days	1020 mb / 31 In

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