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Sarnia, ON — 3 hour detailed weather forecast


ON, Canada » Sarnia


Forecast for today, Sunday, May 3, 2026
Detailed forecast - 3 hours intervals

08:00

Mainly sunny
+5°
feels like: +2°
Mainly sunny
Relative humidity: 69%, pressure: 743 mm
Precipitations: 0.0 mm
Wind: 14 km/h, south
11:00

Partly cloudy
+12°
feels like: +12°
Partly cloudy
Relative humidity: 57%, pressure: 743 mm
Precipitations: 0.0 mm
Wind: 22 km/h, southwest
14:00

Overcast
+15°
feels like: +15°
Overcast
Relative humidity: 43%, pressure: 741 mm
Precipitations: 0.1 mm
Wind: 25 km/h, west
17:00

Partly cloudy
+16°
feels like: +16°
Partly cloudy
Relative humidity: 43%, pressure: 740 mm
Precipitations: 1.3 mm
Wind: 25 km/h, west
20:00

Partly cloudy
+14°
feels like: +14°
Partly cloudy
Relative humidity: 51%, pressure: 739 mm
Precipitations: 0.6 mm
Wind: 22 km/h, southwest
23:00

Overcast
+11°
feels like: +11°
Overcast
Relative humidity: 66%, pressure: 739 mm
Precipitations: 0.0 mm
Wind: 22 km/h, southwest
02:00

A mix of sun and cloud
+10°
feels like: +7°
A mix of sun and cloud
Relative humidity: 76%, pressure: 738 mm
Precipitations: 0.2 mm
Wind: 18 km/h, southwest
05:00

Sunny
+9°
feels like: +7°
Clear
Relative humidity: 81%, pressure: 737 mm
Precipitations: 0.0 mm
Wind: 11 km/h, southwest
08:00

Partly cloudy
+10°
feels like: +10°
Partly cloudy
Relative humidity: 85%, pressure: 738 mm
Precipitations: 0.0 mm
Wind: 14 km/h, south