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To make matters worse, the drizzling rain that Windsor-Essex experienced Thursday has a good chance of turning into freezing rain early Friday, eventually becoming light snowfall as the air grows colder.
Dense fog patches have been observed across portions of northeastern Ontario today.
But Environment Canada's meteorologists predict that the mercury will plummet on Friday due to a passing cold front. "Rainfall amounts of 15 to 25 mm are possible Thursday into Thursday night".
However, the criteria may be approached or reached in some places.More news: Dark Souls: Remastered Confirmed; Coming May 25th
She said the TRCA will be monitoring the water level of the Don River on Friday, especially since it runs close to the Richmond Hill GO rail line.
The city and region enjoyed a high of 11 C on Thursday. Rain will quickly transition to snow, with a risk of brief freezing rain during the changeover.
"We're going to get a cold front starting to move in from our north and west and at least a few hours of freezing rain starting Saturday morning across Prince County", said Scotland.
Environment Canada is forecasting rain for Peel and much of southern Ontario on Thursday with a high of 10 C - followed by a 22 C swing to a low of -12 C by Friday night, January 12.