Sarnia (Canada) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -3° Celsius;
Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -3° Celsius; -
Maximum daytime temperature: -1° Celsius; Minimum nighttime temperature: -3° Celsius;
Maximum daytime temperature: -1° Celsius; Minimum nighttime temperature: -3° Celsius; -
Maximum daytime temperature: -1° Celsius; Minimum nighttime temperature: -4° Celsius;
Maximum daytime temperature: -1° Celsius; Minimum nighttime temperature: -4° Celsius; -
Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -4° Celsius;
Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -4° Celsius;
-
Maximum daytime temperature: -3° Celsius; Minimum nighttime temperature: -6° Celsius;
Maximum daytime temperature: -3° Celsius; Minimum nighttime temperature: -6° Celsius;
-
Maximum daytime temperature: -1° Celsius; Minimum nighttime temperature: -2° Celsius;
Maximum daytime temperature: -1° Celsius; Minimum nighttime temperature: -2° Celsius;
-
Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -2° Celsius;
Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -2° Celsius;
Sleet changing to overcast by late morning.
Sunrise:
Sunset:
L UV
No pollution data.
No pollen data.
7 day forecast for Sarnia
Today (30 November 2025)
| Time |
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 |
≥95%
|
≥95%
|
≥95%
|
≥95%
|
≥95%
|
80%
|
40%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
10%
|
20%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
0°
|
0°
|
0°
|
1°
|
1°
|
2°
|
2°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
0°
|
0°
|
-1°
|
-1°
|
-1°
|
-2°
|
| Feels like temperature (°C) |
-6°
|
-6°
|
-6°
|
-6°
|
-5°
|
-4°
|
-4°
|
-5°
|
-5°
|
-5°
|
-5°
|
-4°
|
-5°
|
-5°
|
-5°
|
-6°
|
-7°
|
-8°
|
-8°
|
-9°
|
-9°
|
| Wind direction and speed |
SSE
19
|
SSE
19
|
SSE
18
|
S
17
|
S
19
|
SSW
20
|
SSW
20
|
SW
21
|
SW
21
|
SW
20
|
SW
18
|
W
17
|
W
18
|
W
18
|
W
19
|
WNW
20
|
NW
21
|
NW
21
|
NW
21
|
NW
20
|
NW
19
|
| Wind gust (mph) |
32
|
31
|
30
|
31
|
34
|
35
|
37
|
37
|
37
|
36
|
33
|
35
|
35
|
35
|
37
|
38
|
38
|
37
|
37
|
35
|
33
|
| Visibility |
VP
|
VP
|
VP
|
VP
|
P
|
M
|
M
|
M
|
M
|
M
|
M
|
G
|
G
|
VG
|
VG
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
100%
|
100%
|
100%
|
100%
|
99%
|
93%
|
92%
|
87%
|
86%
|
86%
|
87%
|
84%
|
78%
|
76%
|
79%
|
84%
|
83%
|
78%
|
76%
|
73%
|
71%
|
| UV | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Monday (1 December 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%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
30%
|
| Temperature (°C) |
-2°
|
-2°
|
-2°
|
-2°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-2°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-2°
|
| Feels like temperature (°C) |
-9°
|
-9°
|
-9°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-7°
|
-6°
|
-6°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-6°
|
| Wind direction and speed (mph) |
NW
18
|
NW
16
|
NW
15
|
NW
13
|
NW
11
|
WNW
10
|
WNW
9
|
WNW
8
|
W
8
|
W
7
|
W
6
|
WSW
6
|
SW
7
|
SW
8
|
SW
8
|
SW
8
|
SW
7
|
SW
7
|
SSW
6
|
S
6
|
S
6
|
S
7
|
S
7
|
S
7
|
| Wind gust (mph) |
31
|
28
|
26
|
23
|
21
|
18
|
16
|
15
|
14
|
13
|
13
|
15
|
16
|
17
|
16
|
15
|
13
|
12
|
11
|
12
|
12
|
13
|
14
|
13
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
67%
|
67%
|
68%
|
69%
|
72%
|
75%
|
76%
|
77%
|
79%
|
77%
|
73%
|
66%
|
59%
|
55%
|
54%
|
54%
|
55%
|
55%
|
55%
|
55%
|
56%
|
57%
|
59%
|
67%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Tuesday (2 December 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 |
30%
|
30%
|
30%
|
40%
|
30%
|
20%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
| Feels like temperature (°C) |
-6°
|
-6°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-6°
|
-6°
|
-6°
|
-6°
|
-6°
|
-6°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-6°
|
-6°
|
-6°
|
-6°
|
-6°
|
-7°
|
| Wind direction and speed (mph) |
S
6
|
S
6
|
S
4
|
SW
4
|
SW
4
|
WSW
4
|
W
5
|
WNW
6
|
WNW
6
|
WNW
7
|
WNW
8
|
WNW
8
|
WNW
9
|
WNW
9
|
W
9
|
W
8
|
W
8
|
W
8
|
WSW
8
|
WSW
8
|
WSW
8
|
SW
8
|
SW
9
|
SW
10
|
| Wind gust (mph) |
12
|
10
|
9
|
9
|
9
|
10
|
11
|
12
|
14
|
15
|
17
|
17
|
18
|
18
|
18
|
17
|
16
|
16
|
15
|
15
|
15
|
16
|
17
|
19
|
| Visibility (description) |
G
|
M
|
M
|
M
|
M
|
M
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
78%
|
84%
|
88%
|
88%
|
89%
|
88%
|
86%
|
85%
|
84%
|
81%
|
77%
|
74%
|
72%
|
69%
|
69%
|
68%
|
67%
|
67%
|
68%
|
69%
|
71%
|
71%
|
72%
|
72%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Wednesday (3 December 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%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
| Temperature (°C) |
-2°
|
-2°
|
-2°
|
-3°
|
-3°
|
-4°
|
-4°
|
-4°
|
-4°
|
-3°
|
-3°
|
-2°
|
-1°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
-1°
|
-1°
|
-1°
|
| Feels like temperature (°C) |
-7°
|
-8°
|
-8°
|
-9°
|
-10°
|
-11°
|
-11°
|
-11°
|
-11°
|
-11°
|
-10°
|
-9°
|
-7°
|
-7°
|
-6°
|
-5°
|
-5°
|
-5°
|
-5°
|
-6°
|
-6°
|
-6°
|
-7°
|
-7°
|
| Wind direction and speed (mph) |
SW
10
|
SW
11
|
SSW
12
|
SSW
13
|
SSW
14
|
SSW
15
|
SSW
16
|
SSW
17
|
SSW
17
|
SSW
18
|
SSW
18
|
SSW
18
|
SW
18
|
SW
17
|
SW
16
|
SW
15
|
SW
15
|
WSW
14
|
WSW
14
|
WSW
14
|
W
14
|
W
14
|
WNW
14
|
WNW
14
|
| Wind gust (mph) |
20
|
21
|
23
|
24
|
26
|
27
|
29
|
30
|
31
|
32
|
33
|
33
|
32
|
31
|
29
|
28
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
26
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
75%
|
75%
|
76%
|
76%
|
76%
|
75%
|
76%
|
75%
|
75%
|
73%
|
70%
|
69%
|
70%
|
71%
|
73%
|
74%
|
78%
|
79%
|
78%
|
78%
|
77%
|
74%
|
72%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Thursday (4 December 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
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
-2°
|
-2°
|
-2°
|
-2°
|
-3°
|
-3°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-5°
|
| Feels like temperature (°C) |
-8°
|
-8°
|
-8°
|
-9°
|
-9°
|
-10°
|
-10°
|
-10°
|
-11°
|
-11°
|
-11°
|
-11°
|
-11°
|
-10°
|
-10°
|
-10°
|
-10°
|
-10°
|
-10°
|
-11°
|
-11°
|
| Wind direction and speed (mph) |
WNW
13
|
WNW
14
|
WNW
14
|
WNW
14
|
WNW
14
|
WNW
14
|
WNW
14
|
WNW
13
|
WNW
13
|
W
13
|
W
13
|
W
14
|
W
14
|
W
13
|
W
14
|
W
14
|
W
13
|
W
13
|
W
13
|
WSW
13
|
WSW
13
|
| Wind gust (mph) |
26
|
26
|
26
|
26
|
25
|
25
|
25
|
24
|
24
|
25
|
27
|
28
|
28
|
27
|
27
|
26
|
25
|
24
|
23
|
25
|
26
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
70%
|
69%
|
69%
|
66%
|
64%
|
65%
|
64%
|
65%
|
65%
|
63%
|
62%
|
61%
|
58%
|
56%
|
57%
|
57%
|
61%
|
61%
|
63%
|
64%
|
67%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
Friday (5 December 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
10%
|
10%
|
20%
|
30%
|
30%
|
20%
|
| Temperature (°C) |
-5°
|
-6°
|
-6°
|
-5°
|
-3°
|
-1°
|
-2°
|
-1°
|
| Feels like temperature (°C) |
-12°
|
-12°
|
-12°
|
-11°
|
-9°
|
-7°
|
-7°
|
-6°
|
| Wind direction and speed (mph) |
SW
13
|
SW
12
|
SW
12
|
SSW
13
|
SSW
13
|
SSW
13
|
SSW
11
|
SSW
10
|
| Wind gust (mph) |
24
|
23
|
23
|
25
|
25
|
22
|
21
|
20
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
| Humidity |
67%
|
68%
|
70%
|
68%
|
68%
|
69%
|
80%
|
88%
|
| UV | - | - | 1 | 1 | 1 | 1 | - | - |
Saturday (6 December 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
20%
|
10%
|
10%
|
20%
|
10%
|
30%
|
20%
|
| Temperature (°C) |
-1°
|
-1°
|
0°
|
0°
|
1°
|
1°
|
0°
|
0°
|
| Feels like temperature (°C) |
-6°
|
-6°
|
-5°
|
-5°
|
-4°
|
-4°
|
-5°
|
-5°
|
| Wind direction and speed (mph) |
SSW
10
|
SW
10
|
SSW
10
|
SW
11
|
WSW
12
|
SW
12
|
SW
11
|
WSW
11
|
| Wind gust (mph) |
19
|
20
|
21
|
25
|
23
|
22
|
20
|
20
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
G
|
G
|
G
|
| Humidity |
87%
|
89%
|
87%
|
85%
|
79%
|
80%
|
84%
|
88%
|
| UV | - | - | 1 | 1 | 1 | 1 | - | - |
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Forecast
Forecast for 3am (UTC-5) Sunday
Updated 06:20 (UTC) on Sun 30 Nov 2025
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