Geek Weather

Interactive weather forecasts, historical data graphs, and multi-city comparisons. Zoom from yearly overview to hourly detail.

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Browse all locations — view weather forecasts and historical data for cities worldwide.

About Sarnia, 08's Climate & Weather History

With a population of around 72,100, Sarnia sits in Ontario, Canada. The city operates in the Eastern Time Zone.

View current conditions and forecast for Sarnia · More cities in Ontario