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City of Sarnia, OntarioSarnia, ON 7-Day Weather Forecast
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Sarnia, ON Weather Forecast
Sarnia, ON Weather Forecast Date: 1220 PM Thu Oct 15 2026 (Sarnia Time)
Today Lo: 10°C51°F Hi: 17°C63°F |
Overcast Thursday, temperatures as high as 17°C63°F, low temperature around 10°C51°F, chance of rain 14%, wind out of the ESE 14 km/h9 mph. Barometric pressure 102.2 kPa30.18 in, visibility 10 km6 mi, humidity 60%. |
Friday Lo: 9°C48°F Hi: 20°C68°F |
Chance of showers Friday, temperatures as high as 20°C68°F, low temperature around 9°C48°F, chance of rain 28%, wind out of the WNW 36 km/h23 mph. Barometric pressure 100.8 kPa29.77 in, visibility 10 km6 mi, humidity 73%. |
Saturday Lo: 6°C43°F Hi: 10°C51°F |
Sunny Saturday, temperatures as high as 10°C51°F, low temperature around 6°C43°F, chance of rain 3%, wind out of the NNW 19 km/h12 mph. Barometric pressure 103.2 kPa30.47 in, visibility 10 km6 mi, humidity 51%. |
| Sunday Lo: 6°C43°F Hi: 16°C60°F |
Sunny Sunday, temperatures as high as 16°C60°F, low temperature around 6°C43°F, chance of rain 1%, wind out of the SW 32 km/h20 mph. Barometric pressure 103.1 kPa30.45 in, visibility 10 km6 mi, humidity 35%. |
| Monday Lo: 9°C48°F Hi: 18°C65°F |
Sunny Monday, temperatures as high as 18°C65°F, low temperature around 9°C48°F, chance of rain 1%, wind out of the SW 23 km/h14 mph. Barometric pressure 102.9 kPa30.39 in, visibility 10 km6 mi, humidity 43%. |
| Tuesday Lo: 11°C51°F Hi: 16°C60°F |
Overcast Tuesday, temperatures as high as 16°C60°F, low temperature around 11°C51°F, chance of rain 12%, wind out of the S 5 km/h3 mph. Barometric pressure 103.1 kPa30.45 in, visibility 10 km6 mi, humidity 54%. |
| Wednesday Lo: 10°C50°F Hi: 15°C59°F |
Sunny Wednesday, temperatures as high as 15°C59°F, low temperature around 10°C50°F, chance of rain 2%, wind out of the NE 11 km/h7 mph. Barometric pressure 103 kPa30.42 in, visibility 10 km6 mi, humidity 48%. |
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