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Sarnia, ON — 3 hour detailed weather forecast


ON, Canada » Sarnia


Forecast for today, Wednesday, October 22, 2025
Detailed forecast - 3 hours intervals

23:00

Overcast
+8°
feels like: +5°
Overcast
Relative humidity: 88%, pressure: 739 mm
Precipitations: 0.0 mm
Wind: 14 km/h, west
02:00

Overcast
+7°
feels like: +4°
Overcast
Relative humidity: 90%, pressure: 739 mm
Precipitations: 0.0 mm
Wind: 18 km/h, west
05:00

Overcast
+7°
feels like: +4°
Overcast
Relative humidity: 88%, pressure: 740 mm
Precipitations: 0.3 mm
Wind: 18 km/h, west
08:00

Overcast
+6°
feels like: +3°
Overcast
Relative humidity: 87%, pressure: 742 mm
Precipitations: 0.2 mm
Wind: 18 km/h, west
11:00

Overcast
+9°
feels like: +5°
Overcast
Relative humidity: 77%, pressure: 743 mm
Precipitations: 0.0 mm
Wind: 22 km/h, northwest
14:00

Mainly sunny
+11°
feels like: +11°
Mainly sunny
Relative humidity: 59%, pressure: 744 mm
Precipitations: 0.1 mm
Wind: 22 km/h, west
17:00

A mix of sun and cloud
+10°
feels like: +10°
A mix of sun and cloud
Relative humidity: 60%, pressure: 745 mm
Precipitations: 0.3 mm
Wind: 18 km/h, west
20:00

A mix of sun and cloud
+8°
feels like: +5°
A mix of sun and cloud
Relative humidity: 80%, pressure: 746 mm
Precipitations: 0.2 mm
Wind: 14 km/h, west
23:00

Mainly sunny
+6°
feels like: +3°
Mainly sunny
Relative humidity: 87%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 11 km/h, west