Your local weather forecast for today
Sarnia, ON — 3 hour detailed weather forecast
ON, Canada » Sarnia
Forecast for today, Sunday, January 18, 2026
01:00 |
-10° feels like: -18° |
Mainly sunny
Relative humidity: 75%, pressure: 746 mm Precipitations: 0.0 mm Wind: 18 km/h, southwest |
04:00 |
-10° feels like: -17° |
A mix of sun and cloud
Relative humidity: 80%, pressure: 745 mm Precipitations: 0.0 mm Wind: 18 km/h, southwest |
07:00 |
-9° feels like: -17° |
Light snow
Relative humidity: 83%, pressure: 745 mm Precipitations: 0.1 mm Wind: 14 km/h, southwest |
10:00 |
-9° feels like: -16° |
Overcast
Relative humidity: 82%, pressure: 746 mm Precipitations: 0.1 mm Wind: 14 km/h, southwest |
13:00 |
-7° feels like: -14° |
Overcast
Relative humidity: 79%, pressure: 744 mm Precipitations: 0.0 mm Wind: 18 km/h, southwest |
16:00 |
-6° feels like: -13° |
Overcast
Relative humidity: 78%, pressure: 743 mm Precipitations: 0.1 mm Wind: 14 km/h, southwest |
19:00 |
-8° feels like: -14° |
Overcast
Relative humidity: 80%, pressure: 743 mm Precipitations: 0.0 mm Wind: 14 km/h, southwest |
22:00 |
-8° feels like: -15° |
Light snow
Relative humidity: 81%, pressure: 742 mm Precipitations: 0.1 mm Wind: 14 km/h, southwest |
01:00 |
-8° feels like: -14° |
Snow
Relative humidity: 84%, pressure: 740 mm Precipitations: 0.5 mm Wind: 14 km/h, southwest |
04:00 |
-8° feels like: -15° |
Light snow
Relative humidity: 86%, pressure: 739 mm Precipitations: 0.3 mm Wind: 14 km/h, southwest |