Weather in Thunder Bay in Summer
| June | July | August | ||||
| Average day temperature: | 62.8°F | 69.3°F | 68.9°F | |||
| Average night temperature: | 52.5°F | 58.5°F | 59.2°F | |||
| Sea water temperature: | 47.0°F | 59.3°F | 63.4°F | |||
| Number of sunny days: | 9 days | 12 days | 14 days | |||
| Day length: | 15.8 - 16.1 h. | 15.1 - 16.0 h. | 13.4 - 15.0 h. | |||
| Number of rainy days: | 2 days | 2 days | 3 days | |||
| Precipitation totals: | 1.1 in. | 0.9 in. | 1.2 in. | |||
current
weather
weather
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
sea water
temperature
temperature
| Thunder Bay |
14 days
forecast
forecast
| Thunder Bay |
Day & Night air temperature, °F
June
July
August
0
11
22
33
44
55
66
77
88
68.9
69.3
62.8
59.2
58.5
52.5
| Day temperature | Night temperature |
Sea water temperature, °F
June
July
August
0
10
20
30
40
50
60
70
80
63.4
59.3
47
Precipitation total, in.
June
July
August
0.0
0.2
0.4
0.6
0.8
1.0
1.3
1.5
1.2
0.9
1.1
Sunny, partly cloudy and cloudy days
June
July
August
0
5
10
15
20
25
30
35
6
6
10
11
12
11
14
12
9
| Cloudy days | Partly cloudy days | Sunny days |
weather in
winter
winter
| Thunder Bay |
weather in
spring
spring
| Thunder Bay |
weather in
summer
summer
| Thunder Bay |
weather in
autumn
autumn
| Thunder Bay |
Wind speed, mph
June
July
August
0.0
1.1
2.3
3.4
4.5
5.7
6.8
7.9
9.1
6.6
5.9
6.4
Average sunny hours
June
July
August
0
1
2
3
4
5
6
7
8
9
10
11
9
9.6
8.3
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
Best time for vacation in Thunder Bay
Thunder Bay on a weather map
Leaflet | Tiles © Esri
Places in Canada:
Name
°F
24 Hours Forecast
Thunder Bay
Local time: 12:21
March 10, monday
1500
37°F
N
5 mph
5 mph
1800
36°F
E
5 mph
5 mph
2100
37°F
S
13 mph
13 mph
March 11, tuesday
0000
32°F
S
14 mph
14 mph
0300
25°F
S
14 mph
14 mph
0600
14°F
S
12 mph
12 mph
0900
12°F
SE
10 mph
10 mph
1200
18°F
SE
9 mph
9 mph
