Sarnia (Canada) weather
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Forecast days
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Today. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Light showers changing to cloudy by early evening. Sunrise: 07:19; Sunset: 19:24. UV: Moderate;
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Sunday 25 September. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy changing to sunny by late morning. Sunrise: 07:20; Sunset: 19:22. UV: Moderate;
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Monday 26 September. Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Light rain changing to cloudy by nighttime. Sunrise: 07:21; Sunset: 19:20. UV: Moderate;
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Tuesday 27 September. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to light rain by early evening. Sunrise: 07:22; Sunset: 19:18. UV: Moderate;
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Wednesday 28 September. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Light rain changing to cloudy by late morning. Sunrise: 07:23; Sunset: 19:17. UV: Moderate;
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Thursday 29 September. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Sunny. Sunrise: 07:24; Sunset: 19:15. UV: Moderate;
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Friday 30 September. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny. Sunrise: 07:25; Sunset: 19:13. UV: Moderate;
Seven day forecast for Sarnia
| Time | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
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|
|
|
|
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|
|
Chance of precipitation
|
30% | 30% | 30% | 10% | 10% | 10% | 10% | 10% |
|
|
16°
|
16°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
|
|
14° | 14° | 14° | 14° | 14° | 14° | 14° | 14° |
|
|
S
10
|
S
10
|
S
9
|
S
8
|
S
6
|
S
6
|
SSE
6
|
SSE
6
|
|
|
21 | 21 | 18 | 15 | 12 | 12 | 12 | 11 |
|
|
G | G | G | VG | VG | VG | VG | VG |
|
Humidity
|
64% | 70% | 73% | 76% | 80% | 81% | 82% | 83% |
|
UV
|
1 | 1 | 1 | 1 | - | - | - | - |
| 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 symbol |
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 60% | 60% | 60% | 20% | 20% | 20% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 40% | 40% | 10% |
|
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
13°
|
14°
|
15°
|
15°
|
16°
|
17°
|
18°
|
18°
|
18°
|
18°
|
17°
|
16°
|
15°
|
14°
|
|
|
14° | 14° | 14° | 14° | 14° | 13° | 13° | 13° | 12° | 13° | 14° | 14° | 15° | 15° | 16° | 16° | 15° | 15° | 15° | 14° | 13° | 12° |
|
|
S
6
|
S
5
|
SSW
5
|
WSW
5
|
WSW
5
|
WSW
6
|
W
6
|
W
6
|
WNW
7
|
WNW
7
|
WNW
8
|
WNW
9
|
WNW
10
|
WNW
11
|
WNW
12
|
WNW
12
|
WNW
12
|
WNW
13
|
WNW
12
|
WNW
11
|
WNW
11
|
W
10
|
|
|
10 | 9 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 14 | 16 | 18 | 20 | 23 | 25 | 25 | 25 | 25 | 23 | 21 | 19 | 18 |
|
|
VG | M | M | M | G | G | G | G | G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
86% | 88% | 91% | 92% | 93% | 94% | 93% | 93% | 93% | 88% | 83% | 78% | 72% | 66% | 60% | 60% | 60% | 60% | 65% | 70% | 75% | 75% |
|
UV
|
- | - | - | - | - | - | - | - | 1 | 2 | 3 | 4 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | - | - |
| Time | 02:00 | 05:00 | 08:00 | 11:00 | 14:00 | 17:00 | 20:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
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|
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Chance of precipitation
|
10% | 10% | 50% | 40% | 50% | 50% | 40% | 10% |
|
|
12°
|
12°
|
11°
|
13°
|
15°
|
15°
|
13°
|
12°
|
|
|
10° | 10° | 9° | 10° | 11° | 12° | 11° | 9° |
|
|
W
10
|
W
12
|
W
14
|
WNW
16
|
WNW
16
|
WNW
17
|
W
15
|
W
15
|
|
|
18 | 20 | 24 | 30 | 31 | 31 | 26 | 26 |
|
|
VG | VG | G | VG | VG | VG | VG | VG |
|
Humidity
|
81% | 85% | 90% | 80% | 71% | 68% | 75% | 79% |
|
UV
|
- | - | 1 | 3 | 3 | 1 | - | - |
| Time | 02:00 | 05:00 | 08:00 | 11:00 | 14:00 | 17:00 | 20:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
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|
|
Chance of precipitation
|
10% | <5% | 10% | 10% | 10% | 20% | 40% | 10% |
|
|
11°
|
10°
|
10°
|
12°
|
13°
|
13°
|
12°
|
11°
|
|
|
9° | 8° | 7° | 9° | 10° | 10° | 9° | 8° |
|
|
W
14
|
W
14
|
W
14
|
WNW
16
|
NW
16
|
NW
16
|
NW
15
|
NW
14
|
|
|
25 | 24 | 25 | 31 | 31 | 31 | 28 | 27 |
|
|
VG | VG | VG | VG | VG | G | G | G |
|
Humidity
|
82% | 84% | 85% | 70% | 64% | 66% | 74% | 78% |
|
UV
|
- | - | 1 | 3 | 3 | 1 | - | - |
| Time | 02:00 | 05:00 | 08:00 | 11:00 | 14:00 | 17:00 | 20:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
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|
|
Chance of precipitation
|
40% | 10% | 40% | 20% | 20% | 20% | 10% | 10% |
|
|
11°
|
10°
|
11°
|
12°
|
12°
|
12°
|
11°
|
11°
|
|
|
8° | 8° | 8° | 9° | 10° | 10° | 9° | 9° |
|
|
NW
14
|
NW
13
|
NW
14
|
NNW
15
|
NNW
15
|
NNW
14
|
NNW
11
|
NNW
9
|
|
|
26 | 25 | 26 | 30 | 29 | 26 | 21 | 17 |
|
|
G | G | G | G | G | VG | VG | VG |
|
Humidity
|
82% | 85% | 84% | 75% | 69% | 64% | 66% | 67% |
|
UV
|
- | - | 1 | 3 | 3 | 1 | - | - |
| Time | 02:00 | 05:00 | 08:00 | 11:00 | 14:00 | 17:00 | 20:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | <5% | <5% | <5% | <5% | <5% | <5% |
|
|
10°
|
10°
|
10°
|
11°
|
13°
|
13°
|
12°
|
11°
|
|
|
9° | 8° | 8° | 10° | 12° | 12° | 11° | 10° |
|
|
NW
8
|
NW
8
|
NW
7
|
NNW
7
|
NNW
6
|
N
6
|
ENE
5
|
E
5
|
|
|
15 | 15 | 14 | 16 | 16 | 14 | 10 | 9 |
|
|
VG | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
71% | 73% | 75% | 64% | 59% | 57% | 67% | 73% |
|
UV
|
- | - | 1 | 3 | 4 | 1 | - | - |
| Time | 02:00 | 05:00 | 08:00 | 11:00 | 14:00 | 17:00 |
|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
Chance of precipitation
|
<5% | <5% | <5% | <5% | <5% | <5% |
|
|
10°
|
9°
|
9°
|
12°
|
15°
|
15°
|
|
|
9° | 8° | 8° | 11° | 14° | 14° |
|
|
SE
5
|
SE
5
|
SE
4
|
SE
4
|
ENE
5
|
E
5
|
|
|
9 | 8 | 8 | 10 | 12 | 12 |
|
|
VG | VG | VG | VG | VG | VG |
|
Humidity
|
80% | 84% | 87% | 68% | 55% | 57% |
|
UV
|
- | - | 1 | 4 | 4 | 1 |
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail and drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Medium) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.