The weekly weather in Sarnia covers the next 7 days: daily minimum and maximum temperature, wind, precipitation and the overall trend. Handy for judging when a longer cold or milder spell is arriving.
Planning further ahead? See the 15-day forecast →
The current temperature in Sarnia is 8.1 °C, and it feels like 5.9 °C. Wind speed is around 4.4 km/h, humidity is 73%, and air pressure is 1028 hPa. Conditions right now are best described as clear.
Over the coming hours it is not temperature alone that shapes how the weather feels around Sarnia — wind and humidity matter just as much. Conditions should feel moderate overall.
Tomorrow's forecast for Sarnia points to mostly overcast conditions, with a low near 2.0 °C and a high near 16.4 °C. Tomorrow should stay in a similar temperature range. It is worth planning the day around the morning and evening dips.
Across the week, the daily minimums and maximums together show when a longer cold or milder spell is arriving around Sarnia. A wider daily swing usually means morning and evening call for noticeably different clothing.
In October, during autumn, the longer-term average sits around 13.3 °C. That is a useful reference point for judging whether the current day counts as typical or unusual for Sarnia.
The archive lets you look back at how similar months and years behaved, so this page is not only a snapshot of the present but also context for longer-term planning.
It is currently 8.1 °C in Sarnia, and it feels like 5.9 °C.
Current models point to mostly overcast conditions around Sarnia, with temperatures between 2.0 and 16.4 °C.
Air pressure around Sarnia is currently 1028 hPa, which is also shown on the live conditions panel.
Wind speed is about 4.4 km/h and humidity is 73% around Sarnia.
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