World > North America > Canada > Ontario > Thunder Bay   City of Thunder Bay, Ontario

Thunder Bay, Ontario Climate Averages

Feedback E-mail the Weather

Quick Clicks

Thunder Bay Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 17°F Lo 4°F Hi 18°F Lo 5°F Hi 30°F Lo 17°F Hi 40°F Lo 28°F Hi 54°F Lo 40°F Hi 64°F Lo 49°F Hi 71°F Lo 57°F Hi 71°F Lo 57°F Hi 63°F Lo 50°F Hi 48°F Lo 39°F Hi 35°F Lo 26°F Hi 24°F Lo 13°F
9 mph 9 mph 8 mph 9 mph 7 mph 6 mph 6 mph 7 mph 8 mph 9 mph 10 mph 10 mph
1.2 in 1.2 in 1.7 in 3.2 in 3.1 in 3.4 in 3.5 in 3.3 in 3.7 in 2.9 in 2.4 in 2 in
90% 89% 85% 80% 71% 74% 74% 76% 78% 78% 80% 86%
68% 66% 63% 57% 44% 40% 36% 35% 39% 50% 57% 67%
30.1 in 30.1 in 30.1 in 30.0 in 30.0 in 29.9 in 29.9 in 29.9 in 30.0 in 29.9 in 30.0 in 30.0 in
18 16 19 17 24 23 24 24 24 23 18 16
8 7 7 8 6 7 7 7 6 7 8 10
5 5 5 5 0 0 0 0 0 1 4 5
0 0 1 0 0 0 0 0 1 0 0 0
1 1 1 2 3 4 5 4 3 2 1 1
71 75 94 121 185 196 219 227 194 142 113 80
January
February
March
April
May
June
July
August
September
October
November
December
Hi -9°C Lo -16°C Hi -8°C Lo -15°C Hi -1°C Lo -8°C Hi 4°C Lo -2°C Hi 12°C Lo 4°C Hi 18°C Lo 9°C Hi 22°C Lo 14°C Hi 22°C Lo 14°C Hi 17°C Lo 10°C Hi 9°C Lo 4°C Hi 2°C Lo -3°C Hi -5°C Lo -11°C
15 km/h 14 km/h 13 km/h 14 km/h 11 km/h 10 km/h 10 km/h 11 km/h 12 km/h 14 km/h 15 km/h 16 km/h
31 mm 30 mm 44 mm 81 mm 79 mm 85 mm 90 mm 83 mm 94 mm 73 mm 60 mm 49 mm
90% 89% 85% 80% 71% 74% 74% 76% 78% 78% 80% 86%
68% 66% 63% 57% 44% 40% 36% 35% 39% 50% 57% 67%
101.8 kPa 101.9 kPa 101.9 kPa 101.6 kPa 101.5 kPa 101.2 kPa 101.3 kPa 101.3 kPa 101.5 kPa 101.4 kPa 101.6 kPa 101.7 kPa
18 16 19 17 24 23 24 24 24 23 18 16
8 7 7 8 6 7 7 7 6 7 8 10
5 5 5 5 0 0 0 0 0 1 4 5
0 0 1 0 0 0 0 0 1 0 0 0
1 1 1 2 3 4 5 4 3 2 1 1
71 75 94 121 185 196 219 227 194 142 113 80
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Pressure Average
Average Dry Days
Avg. Precip. Days
Avg. Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

Trending Headlines

Thunder Bay Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

Thunder Bay Quick Facts

National Two Day Weather Forecast


E-mail the Thunder Bay Weather Forecast

Voice your opinion or tell us about page issues...