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Sarnia, ON — 3 hour detailed weather forecast


ON, Canada » Sarnia


Forecast for today, Thursday, September 18, 2025
Detailed forecast - 3 hours intervals

02:00

Clear
+12°
feels like: +12°
Clear
Relative humidity: 94%, pressure: 746 mm
Precipitations: 0.0 mm
Wind: 0 km/h, southwest
05:00

Sunny
+11°
feels like: +11°
Clear
Relative humidity: 98%, pressure: 746 mm
Precipitations: 0.0 mm
Wind: 0 km/h, west
08:00

Sunny
+13°
feels like: +13°
Clear
Relative humidity: 98%, pressure: 746 mm
Precipitations: 0.0 mm
Wind: 0 km/h, west
11:00

Sunny
+24°
feels like: +24°
Clear
Relative humidity: 62%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 7 km/h, northwest
14:00

A mix of sun and cloud
+25°
feels like: +25°
A mix of sun and cloud
Relative humidity: 58%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 11 km/h, northeast
17:00

A mix of sun and cloud
+23°
feels like: +23°
A mix of sun and cloud
Relative humidity: 70%, pressure: 746 mm
Precipitations: 0.0 mm
Wind: 14 km/h, northeast
20:00

Sunny
+19°
feels like: +19°
Clear
Relative humidity: 95%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 11 km/h, north
23:00

Mainly sunny
+17°
feels like: +17°
Mainly sunny
Relative humidity: 96%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 11 km/h, north
02:00

A mix of sun and cloud
+16°
feels like: +16°
A mix of sun and cloud
Relative humidity: 97%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 7 km/h, north