Thunder Bay Weather History Ontario, Canada

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
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Tue 04 Nov, 2025 Weather in Thunder Bay

Sunrise: 07:48 AM Sunset: 05:33 PM	Moonrise: 04:44 PM Moonset: 06:38 AM	Max: 10.1 °c	Min: 2.6 °c	Avg: 5.9 °c	Precip: 0.00 mm	Max Wind: 20.9 kph

	Tue 04 0:00 am	Tue 04 3:00 am	Tue 04 6:00 am	Tue 04 9:00 am	Tue 04 12:00 pm	Tue 04 3:00 pm	Tue 04 6:00 pm	Tue 04 9:00 pm
Icon
Temp	4.4°c	3.3°c	2.7°c	4.0°c	7.3°c	9.7°c	8.8°c	6.9°c
Wind	20.9 kmph	16.9 kmph	14.8 kmph	11.5 kmph	12.2 kmph	9.7 kmph	7.6 kmph	7.2 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	0%	0%	49%	97%	98%	67%	67%	64%
Humidity	52%	57%	59%	57%	48%	39%	39%	43%
Pressure	1015 mb	1016 mb	1017 mb	1016 mb	1015 mb	1014 mb	1013 mb	1013 mb

Thunder Bay Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-9°C / 17°F	-16°C / 4°F	-12°C / 10°F	77 hours	31.24 mm / 1.23 In	7 days	1018 mb / 31 In
February	-8°C / 18°F	-15°C / 5°F	-11°C / 11°F	77 hours	33.70 mm / 1.33 In	7 days	1019 mb / 31 In
March	-1°C / 30°F	-8°C / 18°F	-5°C / 24°F	96 hours	54.56 mm / 2.15 In	6 days	1018 mb / 31 In
April	4°C / 40°F	-2°C / 29°F	1°C / 34°F	120 hours	94.53 mm / 3.72 In	8 days	1016 mb / 30 In
May	12°C / 54°F	4°C / 40°F	8°C / 47°F	182 hours	86.56 mm / 3.41 In	6 days	1015 mb / 30 In
June	17°C / 63°F	9°C / 49°F	13°C / 56°F	186 hours	96.78 mm / 3.81 In	7 days	1012 mb / 30 In
July	22°C / 71°F	14°C / 56°F	18°C / 64°F	215 hours	100.18 mm / 3.94 In	7 days	1013 mb / 30 In
August	22°C / 71°F	14°C / 57°F	17°C / 63°F	223 hours	90.12 mm / 3.55 In	6 days	1013 mb / 30 In
September	17°C / 63°F	10°C / 50°F	14°C / 56°F	188 hours	98.79 mm / 3.89 In	6 days	1015 mb / 30 In
October	9°C / 49°F	4°C / 39°F	7°C / 44°F	137 hours	73.13 mm / 2.88 In	7 days	1014 mb / 30 In
November	2°C / 36°F	-3°C / 26°F	-1°C / 31°F	112 hours	59.08 mm / 2.33 In	8 days	1016 mb / 30 In
December	-5°C / 24°F	-10°C / 13°F	-8°C / 18°F	81 hours	56.36 mm / 2.22 In	9 days	1017 mb / 31 In

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