Guerneville December Weather Averages California, United States of America

December Weather Averages for Guerneville

High Temp	13°C	56°F
Low Temp	6°C	42°F
Avg Temp	9°C	48°F
Sunshine Hours	194 hours
Rainfall	191.69 mm	7.55 In
Rain days	7 days
Pressure	1019 mb	31 In

Guerneville December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	12°C / 54°F	5°C / 41°F	8°C / 47°F	210 hours	77.36 mm / 3.05 In	6 days	1018 mb / 31 In
2010	13°C / 55°F	6°C / 43°F	9°C / 48°F	115 hours	229.77 mm / 9.05 In	13 days	1016 mb / 30 In
2011	14°C / 56°F	3°C / 37°F	7°C / 45°F	320 hours	4.10 mm / 0.16 In	1 days	1022 mb / 31 In
2012	12°C / 54°F	5°C / 41°F	9°C / 47°F	188 hours	262.38 mm / 10.33 In	8 days	1017 mb / 31 In
2013	14°C / 57°F	3°C / 37°F	8°C / 46°F	344 hours	12.03 mm / 0.47 In	1 days	1021 mb / 31 In
2014	14°C / 56°F	8°C / 47°F	11°C / 51°F	130 hours	282.93 mm / 11.14 In	13 days	1018 mb / 31 In
2015	12°C / 54°F	5°C / 41°F	9°C / 47°F	160 hours	140.53 mm / 5.53 In	10 days	1020 mb / 31 In
2016	12°C / 54°F	4°C / 39°F	8°C / 46°F	254 hours	146.12 mm / 5.75 In	6 days	1020 mb / 31 In
2017	15°C / 58°F	5°C / 41°F	9°C / 49°F	262 hours	3.00 mm / 0.12 In	1 days	1022 mb / 31 In
2018	13°C / 56°F	6°C / 43°F	9°C / 49°F	200 hours	74.67 mm / 2.94 In	6 days	1021 mb / 31 In
2019	12°C / 54°F	6°C / 44°F	9°C / 49°F	135 hours	220.45 mm / 8.68 In	11 days	1017 mb / 31 In
2020	16°C / 60°F	6°C / 42°F	10°C / 50°F	238 hours	49.52 mm / 1.95 In	3 days	1022 mb / 31 In
2021	13°C / 55°F	5°C / 42°F	9°C / 47°F	177 hours	151.29 mm / 5.96 In	9 days	1016 mb / 30 In
2022	13°C / 55°F	5°C / 41°F	8°C / 46°F	135 hours	195.90 mm / 7.71 In	10 days	1018 mb / 31 In
2023	16°C / 60°F	7°C / 45°F	10°C / 51°F	170 hours	165.43 mm / 6.51 In	7 days	1019 mb / 31 In
2024	13°C / 56°F	8°C / 46°F	10°C / 51°F	99 hours	596.63 mm / 23.49 In	11 days	1022 mb / 31 In
2025	15°C / 59°F	8°C / 47°F	11°C / 52°F	156 hours	646.60 mm / 25.46 In	8 days	1019 mb / 31 In

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