"Going to work on Monday may be chaotic and the end-of-day commute could be even worse if we've had 24 hours of freezing rain", Boily says.
A freezing rain warning is now in effect for the city, along with much of Wellington County and Waterloo Region, and could see as much as 25 mm of ice buildup by Sunday afternoon.
Enough rain may fall Sunday for flooding to be an issue by evening. However, freezing rain is expected to move back in overnight, and may persist well into Sunday before changing over to rain.
A freezing rain warning was issued Friday for areas including Waterloo-Wellington, Huron-Perth and southern portions of Grey-Bruce.
Power outages and tree damage are likely, according to the National Weather Service, due to the wind and ice.
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"There remains considerable uncertainty with regards to how long the freezing rain will last before changing over to rain on Sunday", it reads.
The weather left roads slippery, at a time of year when many people had already removed their winter tires.
"It's a lot of freezing rain, no question about it", said Kimbell.
As this weather system is still a few days away, Environment Canada said there remains uncertainty with regards to precipitation amounts and which areas will be most affected.
Hydro One says it has crews ready to respond to outages 24/7, and additional resources are on standby this weekend.
This story originally appeared on 680 News.