Costa Mesa December Weather Averages California, United States of America

December Weather Averages for Costa Mesa

High Temp	18°C	65°F
Low Temp	11°C	53°F
Avg Temp	14°C	58°F
Sunshine Hours	257 hours
Rainfall	60.84 mm	2.40 In
Rain days	3 days
Pressure	1018 mb	31 In

Costa Mesa December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	17°C / 62°F	10°C / 49°F	13°C / 55°F	260 hours	73.18 mm / 2.88 In	4 days	1018 mb / 31 In
2009	17°C / 63°F	9°C / 49°F	13°C / 55°F	260 hours	50.62 mm / 1.99 In	3 days	1017 mb / 31 In
2010	17°C / 63°F	10°C / 51°F	13°C / 56°F	234 hours	218.67 mm / 8.61 In	8 days	1017 mb / 30 In
2011	18°C / 64°F	9°C / 48°F	13°C / 55°F	328 hours	20.10 mm / 0.79 In	2 days	1020 mb / 31 In
2012	17°C / 62°F	10°C / 51°F	14°C / 56°F	249 hours	37.30 mm / 1.47 In	6 days	1017 mb / 31 In
2013	20°C / 67°F	11°C / 51°F	14°C / 58°F	319 hours	6.20 mm / 0.24 In	1 days	1019 mb / 31 In
2014	17°C / 63°F	12°C / 54°F	14°C / 58°F	239 hours	102.70 mm / 4.04 In	6 days	1018 mb / 31 In
2015	19°C / 65°F	11°C / 51°F	14°C / 58°F	313 hours	21.30 mm / 0.84 In	2 days	1018 mb / 31 In
2016	18°C / 65°F	12°C / 53°F	15°C / 58°F	252 hours	74.05 mm / 2.92 In	5 days	1018 mb / 31 In
2017	22°C / 71°F	14°C / 57°F	17°C / 63°F	327 hours	0.20 mm / 0.01 In	0 days	1020 mb / 31 In
2018	19°C / 66°F	13°C / 55°F	16°C / 60°F	305 hours	60.30 mm / 2.37 In	2 days	1019 mb / 31 In
2019	17°C / 63°F	12°C / 54°F	15°C / 58°F	231 hours	113.83 mm / 4.48 In	4 days	1018 mb / 31 In
2020	20°C / 68°F	13°C / 55°F	16°C / 61°F	306 hours	20.90 mm / 0.82 In	1 days	1019 mb / 31 In
2021	17°C / 63°F	12°C / 53°F	14°C / 58°F	218 hours	133.50 mm / 5.26 In	8 days	1016 mb / 30 In
2022	17°C / 63°F	12°C / 53°F	14°C / 57°F	171 hours	56.30 mm / 2.22 In	2 days	1018 mb / 31 In
2023	19°C / 66°F	14°C / 57°F	16°C / 62°F	232 hours	57.53 mm / 2.26 In	0 days	1017 mb / 31 In
2024	16°C / 61°F	11°C / 51°F	13°C / 56°F	129 hours	0.00 mm / 0.00 In	0 days	1020 mb / 31 In

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