Sarnia (Canada) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 12° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 12° Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 13° Celsius;
-
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 13° Celsius;
-
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 16° Celsius;
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 16° Celsius;
-
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 14° Celsius;
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius; -
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 13° Celsius;
Clear.
Sunrise:
Sunset:
VH UV
No pollution data.
No pollen data.
7 day forecast for Sarnia
Today (30 August 2025)
| Time |
21:00
|
22:00
|
23:00
|
|---|---|---|---|
| Weather symbols |  |
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
| Temperature |
17°
|
16°
|
15°
|
| Feels like temperature (°C) |
16°
|
15°
|
15°
|
| Wind direction and speed |
NE
6
|
ENE
6
|
ENE
6
|
| Wind gust (mph) |
11
|
10
|
9
|
| Visibility |
VG
|
VG
|
VG
|
| Humidity |
64%
|
67%
|
74%
|
| UV | - | - | - |
Sunday (31 August 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) |
15°
|
14°
|
14°
|
13°
|
13°
|
12°
|
12°
|
12°
|
14°
|
15°
|
16°
|
17°
|
18°
|
19°
|
19°
|
20°
|
20°
|
20°
|
20°
|
20°
|
18°
|
18°
|
17°
|
17°
|
| Feels like temperature (°C) |
14°
|
13°
|
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
14°
|
15°
|
16°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
20°
|
19°
|
19°
|
18°
|
17°
|
17°
|
17°
|
| Wind direction and speed (mph) |
E
5
|
ESE
5
|
SE
4
|
SSE
4
|
S
4
|
S
3
|
S
3
|
S
3
|
S
3
|
SSE
3
|
SSE
3
|
SE
3
|
NNE
2
|
NNE
3
|
N
4
|
N
5
|
N
5
|
NNE
5
|
NNE
6
|
NE
6
|
NE
6
|
NE
6
|
NE
6
|
ENE
6
|
| Wind gust (mph) |
8
|
7
|
7
|
6
|
6
|
6
|
6
|
7
|
7
|
7
|
8
|
8
|
9
|
10
|
11
|
12
|
12
|
12
|
11
|
11
|
10
|
10
|
10
|
10
|
| 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 |
75%
|
80%
|
82%
|
84%
|
86%
|
88%
|
89%
|
89%
|
84%
|
81%
|
75%
|
72%
|
67%
|
63%
|
62%
|
55%
|
54%
|
54%
|
55%
|
59%
|
67%
|
75%
|
78%
|
83%
|
| UV | - | - | - | - | - | - | - | - | 1 | 2 | 4 | 6 | 7 | 8 | 7 | 6 | 4 | 2 | 1 | - | - | - | - | - |
Monday (1 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%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
17°
|
16°
|
15°
|
14°
|
14°
|
14°
|
13°
|
13°
|
15°
|
16°
|
18°
|
19°
|
20°
|
21°
|
22°
|
23°
|
23°
|
22°
|
22°
|
21°
|
19°
|
17°
|
| Feels like temperature (°C) |
16°
|
16°
|
15°
|
14°
|
14°
|
14°
|
13°
|
13°
|
15°
|
16°
|
18°
|
19°
|
20°
|
21°
|
22°
|
22°
|
22°
|
22°
|
21°
|
20°
|
19°
|
17°
|
| Wind direction and speed (mph) |
ENE
6
|
E
6
|
E
5
|
E
4
|
E
4
|
E
3
|
ESE
4
|
ESE
4
|
ESE
3
|
E
3
|
E
3
|
ENE
3
|
ENE
4
|
NE
4
|
NNE
4
|
NNE
5
|
NNE
6
|
NNE
7
|
NNE
7
|
NNE
7
|
NNE
7
|
ENE
5
|
| Wind gust (mph) |
9
|
9
|
8
|
7
|
6
|
6
|
7
|
7
|
7
|
7
|
9
|
9
|
10
|
11
|
12
|
13
|
13
|
13
|
13
|
12
|
10
|
8
|
| Visibility (description) |
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
85%
|
87%
|
89%
|
91%
|
92%
|
92%
|
93%
|
92%
|
87%
|
82%
|
75%
|
67%
|
61%
|
56%
|
51%
|
50%
|
51%
|
53%
|
58%
|
64%
|
74%
|
83%
|
| UV | - | - | - | - | - | - | - | - | 1 | 2 | 4 | 6 | 7 | 8 | 7 | 6 | 4 | 2 | 1 | - | - | - |
Tuesday (2 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) |
15°
|
14°
|
15°
|
19°
|
23°
|
23°
|
20°
|
18°
|
| Feels like temperature (°C) |
15°
|
14°
|
15°
|
20°
|
23°
|
23°
|
19°
|
17°
|
| Wind direction and speed (mph) |
ESE
4
|
SE
3
|
SE
3
|
E
2
|
NNW
3
|
N
5
|
ENE
6
|
SSE
7
|
| Wind gust (mph) |
7
|
7
|
7
|
10
|
11
|
11
|
11
|
12
|
| Visibility (description) |
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
88%
|
91%
|
86%
|
67%
|
52%
|
51%
|
63%
|
75%
|
| UV | - | - | 1 | 6 | 7 | 2 | - | - |
Wednesday (3 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%
|
20%
|
20%
|
20%
|
40%
|
| Temperature (°C) |
17°
|
16°
|
17°
|
21°
|
24°
|
24°
|
21°
|
19°
|
| Feels like temperature (°C) |
16°
|
16°
|
16°
|
20°
|
22°
|
21°
|
19°
|
17°
|
| Wind direction and speed (mph) |
S
7
|
S
7
|
S
7
|
SSW
10
|
SSW
11
|
SSW
12
|
S
12
|
S
11
|
| Wind gust (mph) |
12
|
12
|
17
|
22
|
24
|
23
|
21
|
22
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
83%
|
88%
|
86%
|
68%
|
46%
|
46%
|
59%
|
74%
|
| UV | - | - | 1 | 6 | 7 | 2 | - | - |
Thursday (4 September 2025)
| Time |
02:00
|
05:00
|
08:00
|
11:00
|
14:00
|
17:00
|
20:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
 |
|
|
|
|
|
|
| Chance of precipitation |
50%
|
40%
|
30%
|
30%
|
20%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
17°
|
16°
|
14°
|
15°
|
16°
|
16°
|
15°
|
15°
|
| Feels like temperature (°C) |
15°
|
14°
|
12°
|
12°
|
13°
|
14°
|
13°
|
13°
|
| Wind direction and speed (mph) |
SSW
13
|
WNW
13
|
WNW
13
|
WNW
13
|
NW
13
|
NW
12
|
NW
9
|
WNW
10
|
| Wind gust (mph) |
25
|
24
|
27
|
27
|
26
|
23
|
21
|
18
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
86%
|
86%
|
84%
|
69%
|
59%
|
54%
|
54%
|
56%
|
| UV | - | - | 1 | 4 | 5 | 2 | - | - |
Friday (5 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%
|
10%
|
10%
|
10%
|
20%
|
10%
|
<5%
|
| Temperature (°C) |
13°
|
12°
|
13°
|
14°
|
16°
|
17°
|
16°
|
15°
|
| Feels like temperature (°C) |
12°
|
11°
|
11°
|
12°
|
13°
|
14°
|
14°
|
13°
|
| Wind direction and speed (mph) |
W
9
|
W
9
|
WSW
9
|
WSW
11
|
WSW
12
|
WSW
14
|
WSW
12
|
SW
10
|
| Wind gust (mph) |
17
|
17
|
22
|
27
|
27
|
25
|
21
|
20
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
63%
|
67%
|
67%
|
54%
|
45%
|
47%
|
53%
|
59%
|
| UV | - | - | 1 | 6 | 5 | 2 | - | - |
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Forecast
Forecast for 21:00 (UTC-4), Sat
Updated 00:46 (UTC+1) on Sun 31 Aug 2025
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