Environment Canada has issued an Extreme Cold Warning for Sarnia-Lambton.
Strong and gusty northwesterly winds will combine with the frigid temperatures to produce extremely cold wind chill values of minus 35 to minus 30 Thursday and Friday.
Little improvement is expected through the day on Thursday, with daytime highs only a few degrees higher than the overnight low temperatures, and winds forecast to become increasingly gusty.
Very cold wind chill values are likely to persist through Friday, then improve somewhat on Saturday.
People outdoors should exercise caution and dress appropriately as frostbite on exposed skin is possible in as little as 10 minutes.
