Thunder Bay (Canada) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 11° Celsius; -
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 11° Celsius; -
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 13° Celsius; -
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 13° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 11° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 11° Celsius;
-
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 11° Celsius;
Clear.
Sunrise:
Sunset:
M UV
No pollution data.
No pollen data.
7 day forecast for Thunder Bay
Today (18 September 2025)
| Time |
21:00
|
22:00
|
23:00
|
|---|---|---|---|
| Weather symbols |  |
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
| Temperature |
14°
|
13°
|
13°
|
| Feels like temperature (°C) |
14°
|
13°
|
13°
|
| Wind direction and speed |
SE
3
|
E
3
|
NE
4
|
| Wind gust (mph) |
6
|
8
|
9
|
| Visibility |
G
|
G
|
G
|
| Humidity |
91%
|
92%
|
90%
|
| UV | - | - | - |
Friday (19 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
 |
|
|
|
|
 |
|
|
|
|
|
|
 |
|
 |
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
12°
|
12°
|
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
| Feels like temperature (°C) |
12°
|
12°
|
11°
|
11°
|
11°
|
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
| Wind direction and speed (mph) |
ENE
4
|
ENE
4
|
ENE
5
|
ENE
6
|
E
6
|
E
7
|
E
7
|
E
8
|
E
8
|
E
8
|
E
10
|
E
10
|
ESE
10
|
ESE
10
|
ESE
10
|
ESE
10
|
ESE
10
|
ESE
10
|
E
10
|
E
8
|
E
7
|
E
7
|
E
6
|
ESE
6
|
| Wind gust (mph) |
9
|
10
|
11
|
13
|
14
|
14
|
14
|
15
|
17
|
21
|
22
|
23
|
23
|
23
|
23
|
23
|
23
|
22
|
20
|
18
|
15
|
14
|
13
|
13
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
89%
|
89%
|
91%
|
91%
|
91%
|
89%
|
89%
|
89%
|
90%
|
85%
|
84%
|
79%
|
76%
|
75%
|
72%
|
71%
|
72%
|
72%
|
73%
|
75%
|
78%
|
79%
|
82%
|
83%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 2 | 3 | 4 | 5 | 5 | 4 | 3 | 2 | 1 | - | - | - | - | - |
Saturday (20 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
10%
|
20%
|
10%
|
20%
|
10%
|
20%
|
30%
|
30%
|
40%
|
40%
|
40%
|
40%
|
30%
|
30%
|
30%
|
30%
|
20%
|
20%
|
| Temperature (°C) |
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
13°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
| Feels like temperature (°C) |
10°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
12°
|
12°
|
13°
|
13°
|
13°
|
14°
|
14°
|
14°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
14°
|
| Wind direction and speed (mph) |
ESE
6
|
ESE
6
|
ESE
6
|
ESE
6
|
ESE
6
|
ESE
6
|
ESE
6
|
ESE
7
|
ESE
7
|
ESE
8
|
ESE
8
|
ESE
9
|
ESE
10
|
ESE
9
|
ESE
9
|
ESE
9
|
ESE
8
|
ESE
8
|
ESE
7
|
ESE
6
|
E
6
|
E
5
|
E
4
|
E
4
|
| Wind gust (mph) |
13
|
13
|
14
|
14
|
14
|
14
|
14
|
15
|
16
|
19
|
21
|
22
|
22
|
21
|
20
|
20
|
19
|
17
|
15
|
13
|
11
|
11
|
9
|
8
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
M
|
G
|
G
|
M
|
M
|
M
|
M
|
G
|
M
|
| Humidity |
84%
|
85%
|
86%
|
86%
|
86%
|
89%
|
92%
|
92%
|
94%
|
92%
|
90%
|
88%
|
87%
|
91%
|
89%
|
89%
|
92%
|
92%
|
94%
|
94%
|
96%
|
96%
|
97%
|
97%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
Sunday (21 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
20%
|
20%
|
30%
|
20%
|
20%
|
20%
|
20%
|
10%
|
10%
|
10%
|
10%
|
20%
|
30%
|
20%
|
20%
|
20%
|
10%
|
20%
|
20%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
16°
|
16°
|
17°
|
17°
|
17°
|
18°
|
18°
|
17°
|
16°
|
15°
|
15°
|
14°
|
| Feels like temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
16°
|
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
16°
|
15°
|
15°
|
15°
|
| Wind direction and speed (mph) |
ENE
3
|
ENE
4
|
ENE
3
|
ENE
3
|
ENE
3
|
ENE
3
|
NE
3
|
NE
3
|
NE
3
|
NE
3
|
NE
3
|
NE
3
|
ENE
3
|
E
3
|
E
4
|
E
3
|
ESE
3
|
ESE
3
|
SE
4
|
SE
4
|
SE
3
|
SE
3
|
SE
3
|
SE
3
|
| Wind gust (mph) |
8
|
7
|
7
|
7
|
6
|
6
|
6
|
6
|
6
|
6
|
7
|
8
|
9
|
10
|
9
|
9
|
9
|
10
|
9
|
8
|
7
|
6
|
5
|
5
|
| Visibility (description) |
G
|
G
|
G
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
98%
|
98%
|
98%
|
98%
|
98%
|
99%
|
99%
|
99%
|
99%
|
98%
|
98%
|
97%
|
95%
|
91%
|
88%
|
87%
|
87%
|
87%
|
88%
|
89%
|
94%
|
96%
|
97%
|
98%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | - | - | - | - |
Monday (22 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
10%
|
20%
|
10%
|
20%
|
30%
|
30%
|
30%
|
20%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
| Temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
16°
|
17°
|
18°
|
18°
|
19°
|
18°
|
18°
|
17°
|
16°
|
15°
|
15°
|
14°
|
| Feels like temperature (°C) |
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
16°
|
17°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
18°
|
16°
|
15°
|
15°
|
14°
|
| Wind direction and speed (mph) |
SE
2
|
SW
2
|
NW
2
|
NW
2
|
NNW
2
|
NNW
3
|
NNW
2
|
NW
2
|
NW
3
|
NW
3
|
NNW
3
|
NNW
3
|
N
3
|
NNE
3
|
ENE
3
|
SSE
4
|
SSE
4
|
ESE
4
|
ESE
3
|
ESE
3
|
ESE
3
|
ESE
3
|
SE
3
|
NNE
2
|
| Wind gust (mph) |
4
|
4
|
4
|
5
|
5
|
5
|
5
|
5
|
6
|
7
|
8
|
9
|
10
|
10
|
11
|
11
|
11
|
10
|
9
|
7
|
6
|
5
|
4
|
4
|
| Visibility (description) |
M
|
M
|
M
|
M
|
M
|
M
|
M
|
G
|
M
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
| Humidity |
98%
|
98%
|
98%
|
99%
|
99%
|
99%
|
98%
|
98%
|
98%
|
97%
|
95%
|
91%
|
90%
|
85%
|
83%
|
77%
|
77%
|
78%
|
80%
|
86%
|
92%
|
93%
|
95%
|
95%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 4 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | - | - | - | - |
Tuesday (23 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
14°
|
13°
|
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
15°
|
16°
|
17°
|
17°
|
18°
|
18°
|
19°
|
19°
|
18°
|
17°
|
16°
|
14°
|
| Feels like temperature (°C) |
14°
|
14°
|
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
15°
|
16°
|
17°
|
17°
|
18°
|
18°
|
19°
|
18°
|
18°
|
17°
|
16°
|
14°
|
| Wind direction and speed (mph) |
NW
2
|
WNW
2
|
WNW
2
|
NNW
3
|
NNW
3
|
NNW
2
|
NNW
3
|
NNW
3
|
NNW
3
|
N
3
|
NNW
2
|
N
3
|
E
3
|
ESE
4
|
ESE
4
|
ESE
4
|
ESE
5
|
ESE
5
|
SE
5
|
SSE
4
|
SSE
4
|
WSW
3
|
| Wind gust (mph) |
4
|
4
|
4
|
5
|
4
|
5
|
5
|
5
|
5
|
6
|
8
|
10
|
11
|
12
|
13
|
13
|
13
|
12
|
11
|
9
|
8
|
7
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
| Humidity |
96%
|
96%
|
97%
|
96%
|
97%
|
97%
|
98%
|
98%
|
98%
|
97%
|
93%
|
88%
|
84%
|
79%
|
76%
|
74%
|
74%
|
74%
|
77%
|
83%
|
88%
|
93%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 4 | 4 | 3 | 1 | 1 | 1 | - | - |
Wednesday (24 September 2025)
| Time |
02:00
|
05:00
|
08:00
|
11:00
|
14:00
|
17:00
|
20:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
12°
|
12°
|
11°
|
16°
|
21°
|
22°
|
18°
|
15°
|
| Feels like temperature (°C) |
12°
|
11°
|
11°
|
16°
|
20°
|
21°
|
18°
|
14°
|
| Wind direction and speed (mph) |
WNW
3
|
NW
3
|
WNW
3
|
W
4
|
WSW
6
|
SW
7
|
WSW
6
|
W
5
|
| Wind gust (mph) |
7
|
6
|
10
|
14
|
17
|
16
|
11
|
10
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
95%
|
96%
|
98%
|
83%
|
64%
|
62%
|
78%
|
86%
|
| UV | - | - | 1 | 3 | 5 | 1 | - | - |
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Forecast for 21:00 (UTC-4), Thu
Updated 00:55 (UTC+1) on Fri 19 Sep 2025
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