Riverside December Weather Averages California, United States of America

December Weather Averages for Riverside

High Temp	18°C	64°F
Low Temp	8°C	46°F
Avg Temp	12°C	54°F
Sunshine Hours	274 hours
Rainfall	75.09 mm	2.96 In
Rain days	3 days
Pressure	1018 mb	31 In

Riverside December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	15°C / 59°F	5°C / 41°F	10°C / 49°F	256 hours	103.32 mm / 4.07 In	4 days	1018 mb / 31 In
2009	15°C / 60°F	5°C / 41°F	10°C / 49°F	270 hours	82.19 mm / 3.24 In	4 days	1017 mb / 31 In
2010	17°C / 62°F	7°C / 45°F	11°C / 52°F	253 hours	327.29 mm / 12.89 In	8 days	1016 mb / 30 In
2011	16°C / 61°F	4°C / 40°F	10°C / 50°F	336 hours	18.70 mm / 0.74 In	2 days	1020 mb / 31 In
2012	15°C / 59°F	6°C / 43°F	10°C / 50°F	275 hours	42.80 mm / 1.69 In	5 days	1017 mb / 31 In
2013	18°C / 65°F	6°C / 43°F	11°C / 53°F	328 hours	11.00 mm / 0.43 In	2 days	1019 mb / 31 In
2014	16°C / 62°F	7°C / 45°F	11°C / 52°F	264 hours	99.78 mm / 3.93 In	6 days	1018 mb / 31 In
2015	18°C / 64°F	6°C / 42°F	11°C / 52°F	320 hours	29.90 mm / 1.18 In	2 days	1018 mb / 31 In
2016	17°C / 63°F	7°C / 45°F	12°C / 53°F	255 hours	114.26 mm / 4.50 In	5 days	1018 mb / 31 In
2017	23°C / 74°F	11°C / 51°F	16°C / 61°F	342 hours	0.10 mm / 0.00 In	0 days	1020 mb / 31 In
2018	19°C / 66°F	10°C / 49°F	14°C / 57°F	311 hours	63.18 mm / 2.49 In	3 days	1019 mb / 31 In
2019	17°C / 62°F	9°C / 47°F	12°C / 54°F	196 hours	131.13 mm / 5.16 In	5 days	1018 mb / 31 In
2020	20°C / 68°F	9°C / 48°F	14°C / 57°F	313 hours	28.60 mm / 1.13 In	1 days	1019 mb / 31 In
2021	17°C / 62°F	8°C / 47°F	12°C / 54°F	205 hours	159.70 mm / 6.29 In	8 days	1016 mb / 30 In
2022	16°C / 62°F	8°C / 46°F	12°C / 53°F	187 hours	55.50 mm / 2.19 In	2 days	1018 mb / 31 In
2023	20°C / 68°F	11°C / 51°F	15°C / 59°F	252 hours	37.26 mm / 1.47 In	1 days	1018 mb / 31 In
2024	20°C / 68°F	9°C / 48°F	14°C / 57°F	284 hours	0.00 mm / 0.00 In	0 days	1020 mb / 31 In

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