Thunder Bay December Weather Averages Ontario, Canada

December Weather Averages for Thunder Bay

High Temp	-5°C	24°F
Low Temp	-10°C	13°F
Avg Temp	-8°C	18°F
Sunshine Hours	81 hours
Rainfall	56.36 mm	2.22 In
Rain days	9 days
Pressure	1017 mb	31 In

Thunder Bay December Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	-8°C / 17°F	-16°C / 4°F	-12°C / 10°F	45 hours	43.57 mm / 1.72 In	10 days	1016 mb / 30 In
2009	-7°C / 20°F	-12°C / 11°F	-9°C / 15°F	27 hours	50.90 mm / 2.00 In	8 days	1018 mb / 31 In
2010	-7°C / 19°F	-13°C / 9°F	-10°C / 14°F	75 hours	20.00 mm / 0.79 In	6 days	1020 mb / 31 In
2011	-3°C / 27°F	-9°C / 16°F	-6°C / 22°F	120 hours	28.80 mm / 1.13 In	7 days	1017 mb / 31 In
2012	-4°C / 25°F	-9°C / 16°F	-7°C / 20°F	75 hours	27.40 mm / 1.08 In	11 days	1016 mb / 30 In
2013	-11°C / 11°F	-19°C / -1°F	-15°C / 5°F	55 hours	55.80 mm / 2.20 In	13 days	1020 mb / 31 In
2014	-4°C / 24°F	-9°C / 16°F	-6°C / 20°F	80 hours	39.90 mm / 1.57 In	10 days	1021 mb / 31 In
2015	-1°C / 30°F	-5°C / 24°F	-3°C / 27°F	43 hours	87.20 mm / 3.43 In	10 days	1014 mb / 30 In
2016	-5°C / 22°F	-11°C / 13°F	-8°C / 18°F	26 hours	43.37 mm / 1.71 In	9 days	1016 mb / 30 In
2017	-8°C / 17°F	-15°C / 5°F	-12°C / 11°F	55 hours	30.30 mm / 1.19 In	9 days	1018 mb / 31 In
2018	-3°C / 26°F	-9°C / 16°F	-6°C / 21°F	138 hours	49.62 mm / 1.95 In	7 days	1018 mb / 31 In
2019	-5°C / 23°F	-12°C / 11°F	-8°C / 17°F	110 hours	68.25 mm / 2.69 In	5 days	1016 mb / 30 In
2020	-5°C / 24°F	-11°C / 12°F	-8°C / 18°F	137 hours	50.13 mm / 1.97 In	9 days	1016 mb / 30 In
2021	-3°C / 26°F	-11°C / 12°F	-7°C / 19°F	80 hours	86.30 mm / 3.40 In	12 days	1013 mb / 30 In
2022	-5°C / 23°F	-11°C / 12°F	-8°C / 18°F	63 hours	73.50 mm / 2.89 In	18 days	1018 mb / 31 In
2023	1°C / 34°F	-4°C / 24°F	-2°C / 29°F	114 hours	30.91 mm / 1.22 In	13 days	1017 mb / 31 In
2024	-3°C / 27°F	-8°C / 18°F	-5°C / 22°F	104 hours	159.42 mm / 6.28 In	2 days	1019 mb / 31 In

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