Altadena December Weather Averages California, United States of America

December Weather Averages for Altadena

High Temp	17°C	62°F
Low Temp	8°C	46°F
Avg Temp	12°C	53°F
Sunshine Hours	282 hours
Rainfall	82.79 mm	3.26 In
Rain days	4 days
Pressure	1018 mb	31 In

Altadena December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	15°C / 59°F	6°C / 43°F	10°C / 49°F	266 hours	75.22 mm / 2.96 In	3 days	1018 mb / 31 In
2010	16°C / 61°F	7°C / 45°F	11°C / 52°F	247 hours	274.17 mm / 10.79 In	7 days	1017 mb / 31 In
2011	16°C / 61°F	6°C / 43°F	10°C / 50°F	341 hours	14.05 mm / 0.55 In	2 days	1020 mb / 31 In
2012	15°C / 58°F	7°C / 44°F	10°C / 50°F	277 hours	43.10 mm / 1.70 In	5 days	1017 mb / 31 In
2013	18°C / 65°F	7°C / 45°F	12°C / 53°F	338 hours	10.00 mm / 0.39 In	2 days	1019 mb / 31 In
2014	16°C / 60°F	8°C / 47°F	11°C / 52°F	265 hours	113.42 mm / 4.47 In	5 days	1018 mb / 31 In
2015	17°C / 63°F	7°C / 44°F	11°C / 52°F	331 hours	20.70 mm / 0.81 In	2 days	1019 mb / 31 In
2016	17°C / 63°F	8°C / 46°F	12°C / 53°F	288 hours	82.06 mm / 3.23 In	6 days	1019 mb / 31 In
2017	22°C / 71°F	11°C / 52°F	16°C / 60°F	350 hours	0.00 mm / 0.00 In	0 days	1020 mb / 31 In
2018	18°C / 64°F	9°C / 49°F	13°C / 55°F	310 hours	46.15 mm / 1.82 In	3 days	1019 mb / 31 In
2019	15°C / 60°F	8°C / 47°F	11°C / 53°F	234 hours	151.92 mm / 5.98 In	6 days	1018 mb / 31 In
2020	19°C / 65°F	9°C / 49°F	13°C / 56°F	320 hours	21.70 mm / 0.85 In	1 days	1020 mb / 31 In
2021	15°C / 58°F	7°C / 45°F	10°C / 51°F	217 hours	218.70 mm / 8.61 In	7 days	1016 mb / 30 In
2022	14°C / 57°F	7°C / 44°F	10°C / 50°F	196 hours	103.80 mm / 4.09 In	5 days	1018 mb / 31 In
2023	17°C / 62°F	9°C / 48°F	13°C / 55°F	247 hours	66.85 mm / 2.63 In	2 days	1018 mb / 31 In

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