Sarnia (Canada) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 4° Celsius; -
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 2° Celsius;
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 2° Celsius;
-
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 2° Celsius;
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 2° Celsius;
-
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 2° Celsius;
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 2° Celsius; -
Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 3° Celsius;
Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 3° Celsius;
-
Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 5° Celsius;
Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 5° Celsius;
-
Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 3° Celsius;
Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 3° Celsius;
Thunder changing to cloudy by lunchtime.
Sunrise:
Sunset:
L UV
No pollution data.
No pollen data.
7 day forecast for Sarnia
Today (15 November 2025)
| Time |
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 |
60%
|
40%
|
10%
|
<5%
|
<5%
|
10%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
9°
|
10°
|
10°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
11°
|
10°
|
9°
|
8°
|
7°
|
| Feels like temperature (°C) |
5°
|
7°
|
7°
|
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
7°
|
5°
|
4°
|
3°
|
| Wind direction and speed |
S
14
|
S
15
|
SSW
16
|
SSW
16
|
SSW
15
|
SW
14
|
SW
13
|
WSW
13
|
W
15
|
WNW
16
|
NW
17
|
NW
18
|
NW
18
|
NW
19
|
| Wind gust (mph) |
24
|
26
|
27
|
27
|
26
|
24
|
25
|
27
|
29
|
32
|
33
|
33
|
33
|
36
|
| Visibility |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
| Humidity |
95%
|
96%
|
97%
|
96%
|
96%
|
96%
|
96%
|
93%
|
91%
|
89%
|
84%
|
83%
|
79%
|
76%
|
| UV | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Sunday (16 November 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%
|
<5%
|
<5%
|
| Temperature (°C) |
7°
|
6°
|
6°
|
6°
|
5°
|
5°
|
5°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
3°
|
3°
|
3°
|
| Feels like temperature (°C) |
2°
|
2°
|
1°
|
1°
|
0°
|
0°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
-1°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
| Wind direction and speed (mph) |
NW
20
|
NW
20
|
NW
19
|
NW
19
|
NW
20
|
NW
21
|
NW
23
|
NW
22
|
NW
22
|
NW
22
|
NW
22
|
NW
22
|
NW
22
|
NW
21
|
NW
21
|
NW
21
|
NW
20
|
NW
20
|
NW
20
|
NW
20
|
NW
19
|
NW
19
|
NW
19
|
NW
18
|
| Wind gust (mph) |
37
|
36
|
35
|
35
|
38
|
39
|
40
|
40
|
39
|
40
|
41
|
40
|
40
|
39
|
38
|
38
|
36
|
35
|
36
|
36
|
35
|
34
|
33
|
32
|
| Visibility (description) |
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
67%
|
65%
|
62%
|
63%
|
62%
|
57%
|
56%
|
56%
|
56%
|
55%
|
54%
|
53%
|
53%
|
48%
|
46%
|
46%
|
50%
|
53%
|
53%
|
54%
|
55%
|
55%
|
56%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Monday (17 November 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%
|
<5%
|
<5%
|
| Temperature (°C) |
3°
|
3°
|
3°
|
3°
|
3°
|
2°
|
2°
|
2°
|
2°
|
3°
|
3°
|
3°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
3°
|
3°
|
| Feels like temperature (°C) |
-2°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-2°
|
-2°
|
-2°
|
-1°
|
-1°
|
0°
|
0°
|
0°
|
0°
|
1°
|
1°
|
1°
|
1°
|
1°
|
0°
|
| Wind direction and speed (mph) |
NW
17
|
NW
17
|
NW
16
|
NW
16
|
NW
15
|
NW
15
|
WNW
14
|
WNW
14
|
WNW
14
|
WNW
14
|
WNW
15
|
NW
15
|
NW
15
|
NW
15
|
NW
14
|
NW
13
|
NW
12
|
NW
10
|
NW
8
|
WNW
7
|
W
6
|
W
6
|
WSW
6
|
WSW
7
|
| Wind gust (mph) |
31
|
30
|
29
|
28
|
27
|
27
|
26
|
26
|
26
|
28
|
29
|
28
|
28
|
27
|
26
|
24
|
20
|
17
|
14
|
12
|
11
|
11
|
11
|
11
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
56%
|
56%
|
58%
|
59%
|
59%
|
61%
|
62%
|
63%
|
63%
|
61%
|
57%
|
55%
|
54%
|
53%
|
53%
|
53%
|
53%
|
54%
|
55%
|
57%
|
61%
|
63%
|
64%
|
65%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Tuesday (18 November 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%
|
10%
|
10%
|
20%
|
20%
|
20%
|
10%
|
30%
|
30%
|
40%
|
30%
|
30%
|
30%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
3°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
3°
|
3°
|
3°
|
3°
|
4°
|
4°
|
4°
|
4°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
| Feels like temperature (°C) |
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
1°
|
1°
|
1°
|
1°
|
2°
|
1°
|
1°
|
1°
|
1°
|
1°
|
0°
|
0°
|
0°
|
0°
|
0°
|
| Wind direction and speed (mph) |
W
7
|
W
6
|
WNW
6
|
WNW
6
|
WNW
6
|
WNW
6
|
WNW
6
|
W
5
|
WSW
5
|
SW
5
|
SSW
4
|
SSW
4
|
S
5
|
S
5
|
SSE
5
|
SE
5
|
SE
6
|
SE
6
|
ESE
6
|
ESE
5
|
ESE
5
|
ESE
5
|
E
5
|
E
6
|
| Wind gust (mph) |
11
|
11
|
10
|
10
|
9
|
9
|
9
|
9
|
9
|
9
|
10
|
11
|
12
|
12
|
11
|
12
|
11
|
12
|
11
|
10
|
10
|
9
|
10
|
10
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
67%
|
68%
|
70%
|
72%
|
73%
|
73%
|
75%
|
75%
|
75%
|
71%
|
67%
|
68%
|
69%
|
68%
|
70%
|
80%
|
83%
|
88%
|
86%
|
87%
|
89%
|
89%
|
90%
|
91%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
Wednesday (19 November 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) |
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
4°
|
5°
|
5°
|
5°
|
5°
|
6°
|
5°
|
5°
|
5°
|
5°
|
4°
|
| Feels like temperature (°C) |
0°
|
0°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
2°
|
2°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
3°
|
2°
|
| Wind direction and speed (mph) |
E
6
|
ENE
6
|
ENE
6
|
ENE
6
|
ENE
6
|
ENE
6
|
ENE
6
|
E
6
|
E
6
|
E
6
|
E
7
|
ESE
6
|
E
7
|
E
6
|
E
6
|
ENE
6
|
ENE
6
|
ENE
6
|
E
6
|
E
5
|
ESE
6
|
| Wind gust (mph) |
10
|
11
|
11
|
11
|
11
|
11
|
10
|
11
|
12
|
13
|
13
|
14
|
13
|
13
|
12
|
11
|
11
|
11
|
10
|
10
|
10
|
| Visibility (description) |
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
| Humidity |
91%
|
91%
|
91%
|
88%
|
88%
|
88%
|
87%
|
87%
|
86%
|
84%
|
81%
|
77%
|
75%
|
75%
|
76%
|
75%
|
77%
|
82%
|
83%
|
85%
|
86%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - |
Thursday (20 November 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
 |
| Chance of precipitation |
<5%
|
10%
|
10%
|
20%
|
20%
|
30%
|
30%
|
40%
|
| Temperature (°C) |
4°
|
4°
|
4°
|
5°
|
6°
|
7°
|
6°
|
6°
|
| Feels like temperature (°C) |
2°
|
1°
|
1°
|
2°
|
4°
|
5°
|
3°
|
3°
|
| Wind direction and speed (mph) |
SE
5
|
SE
6
|
SE
6
|
SE
7
|
SE
7
|
SE
7
|
SE
9
|
SSE
9
|
| Wind gust (mph) |
10
|
11
|
13
|
15
|
15
|
16
|
17
|
19
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
G
|
G
|
M
|
| Humidity |
88%
|
88%
|
87%
|
86%
|
83%
|
88%
|
95%
|
96%
|
| UV | - | - | 1 | 1 | 1 | 1 | - | - |
Friday (21 November 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
|
|
|
| Chance of precipitation |
50%
|
50%
|
30%
|
30%
|
30%
|
20%
|
20%
|
20%
|
| Temperature (°C) |
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
5°
|
5°
|
| Feels like temperature (°C) |
3°
|
3°
|
2°
|
2°
|
2°
|
2°
|
2°
|
1°
|
| Wind direction and speed (mph) |
S
9
|
WSW
10
|
WNW
13
|
NW
14
|
NW
13
|
NW
13
|
NW
12
|
NW
11
|
| Wind gust (mph) |
21
|
23
|
26
|
27
|
27
|
25
|
23
|
23
|
| Visibility (description) |
M
|
M
|
G
|
G
|
G
|
G
|
VG
|
G
|
| Humidity |
95%
|
94%
|
95%
|
89%
|
84%
|
80%
|
82%
|
83%
|
| UV | - | - | 1 | 1 | 1 | 1 | - | - |
Tooltip header
UK video forecast
weather map
Forecast
Forecast for 10:00 (UTC-5), Sat
Updated 12:25 (UTC) on Sat 15 Nov 2025
Loading map...
More from the Met Office
-
CAUSES OF CLIMATE CHANGE
Causes of climate change
Read -
CLIMATE
The present-day information behind the 'Human dynamics of climate change' poster
Read -
WEATHER
UK Snow 2010
Read -
WEATHER
Ottery St Mary Hailstorm October 2008
Read -
CLIMATE
Regional case studies
Read -
SEASONAL ADVICE
3 tips for staying safe in fog
Read