Sarnia Weather Forecast

CURRENT CONDITIONS - March 26, 2026
15°
Low of5°
Feels like 14°CLast Updated: March 26, 2026 at 4:56 PMWeather information supplied by: OpenWeather API
POP:1%
Wind:11.36 km/h
Humidity:62%
UV:4.16
Sunrise:11:21 AM
Sunset:11:47 PM

Current Weather Alerts

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain. What: Large hail up to 4 cm. Heavy rainfall up to 30 mm. Strong wind gusts up to 90 km/h. When: This afternoon into this evening. ### Local utility outages are possible. Damage to roofs, fences, branches or soft shelters is possible. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information: https://www.ontario.ca/page/be-prepared-emergency.

Sarnia Weather Forecast - Hourly

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15°C

4 PM

16°C

5 PM

16°C

6 PM

14°C

7 PM

12°C

8 PM

9°C

9 PM

7°C

10 PM

8°C

11 PM

7°C

12 AM

7°C

1 AM

6°C

2 AM

5°C

3 AM

4°C

4 AM

3°C

5 AM

2°C

6 AM

-1°C

7 AM

-2°C

8 AM

-2°C

9 AM

-2°C

10 AM

-3°C

11 AM

-3°C

12 PM

-3°C

1 PM

-3°C

2 PM

-3°C

3 PM

-3°C

4 PM

-3°C

5 PM

-3°C

6 PM

-3°C

7 PM

-4°C

8 PM

-4°C

9 PM

-4°C

10 PM

-4°C

11 PM

-4°C

12 AM

-4°C

1 AM

-4°C

2 AM

-4°C

3 AM

-4°C

4 AM

-4°C

5 AM

-4°C

6 AM

-4°C

7 AM

-4°C

8 AM

-3°C

9 AM

-3°C

10 AM

-3°C

11 AM

-3°C

12 PM

-3°C

1 PM

-2°C

2 PM

-1°C

3 PM

Sarnia Weather Forecast - Weekly

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Today
March 26
16°
5°
Tomorrow
March 27
-3°
-4°
Saturday
March 28
1°
-4°
Sunday
March 29
9°
0°
Monday
March 30
11°
3°
Tuesday
March 31
5°
4°
Wednesday
April 1
16°
3°
Thursday
April 2
4°
2°

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