Your local weather forecast for today
Sarnia, ON — 3 hour detailed weather forecast
ON, Canada » Sarnia
Forecast for today, Tuesday, May 19, 2026
08:00 |
+20° feels like: +21° |
Clear
Relative humidity: 86%, pressure: 745 mm Precipitations: 0.0 mm Wind: 18 km/h, southwest |
11:00 |
+25° feels like: +25° |
Clear
Relative humidity: 67%, pressure: 744 mm Precipitations: 0.1 mm Wind: 25 km/h, south |
14:00 |
+28° feels like: +29° |
Light showers
Relative humidity: 61%, pressure: 744 mm Precipitations: 1.3 mm Wind: 25 km/h, southwest |
17:00 |
+25° feels like: +25° |
Chance of thunderstorms
Relative humidity: 73%, pressure: 743 mm Precipitations: 2.9 mm Wind: 22 km/h, southwest |
20:00 |
+23° feels like: +23° |
Chance of thunderstorms
Relative humidity: 75%, pressure: 743 mm Precipitations: 0.1 mm Wind: 14 km/h, south |
23:00 |
+20° feels like: +20° |
Light showers
Relative humidity: 87%, pressure: 744 mm Precipitations: 2.1 mm Wind: 11 km/h, southwest |
02:00 |
+9° feels like: +6° |
Showers
Relative humidity: 92%, pressure: 747 mm Precipitations: 1.7 mm Wind: 22 km/h, north |
05:00 |
+8° feels like: +4° |
Light showers
Relative humidity: 83%, pressure: 748 mm Precipitations: 0.5 mm Wind: 22 km/h, northeast |
08:00 |
+8° feels like: +5° |
A mix of sun and cloud
Relative humidity: 76%, pressure: 750 mm Precipitations: 0.0 mm Wind: 25 km/h, north |