Your local weather forecast for today
Sarnia, ON — 3 hour detailed weather forecast
ON, Canada » Sarnia
Forecast for today, Thursday, December 18, 2025
19:00 |
+8° feels like: +4° |
Showers
Relative humidity: 85%, pressure: 732 mm Precipitations: 1.6 mm Wind: 29 km/h, south |
22:00 |
+8° feels like: +4° |
Showers
Relative humidity: 85%, pressure: 729 mm Precipitations: 2.1 mm Wind: 32 km/h, south |
01:00 |
+5° feels like: +1° |
Rain
Relative humidity: 89%, pressure: 727 mm Precipitations: 5.4 mm Wind: 22 km/h, west |
04:00 |
+2° feels like: +-3° |
Snow and Rain
Relative humidity: 86%, pressure: 728 mm Precipitations: 2.0 mm Wind: 18 km/h, southwest |
07:00 |
-1° feels like: -7° |
Light snow
Relative humidity: 73%, pressure: 729 mm Precipitations: 0.3 mm Wind: 22 km/h, west |
10:00 |
-2° feels like: -9° |
Light snow
Relative humidity: 59%, pressure: 731 mm Precipitations: 0.2 mm Wind: 29 km/h, west |
13:00 |
-2° feels like: -10° |
Overcast
Relative humidity: 54%, pressure: 733 mm Precipitations: 0.1 mm Wind: 36 km/h, west |
16:00 |
-3° feels like: -11° |
Overcast
Relative humidity: 54%, pressure: 737 mm Precipitations: 0.1 mm Wind: 32 km/h, west |
19:00 |
-3° feels like: -11° |
Overcast
Relative humidity: 59%, pressure: 742 mm Precipitations: 0.0 mm Wind: 29 km/h, west |
22:00 |
-4° feels like: -11° |
A mix of sun and cloud
Relative humidity: 57%, pressure: 745 mm Precipitations: 0.0 mm Wind: 25 km/h, west |