A Freezing Rain Warning has been issued for: Huron, Perth, Bruce and Grey Counties and Northern Wellington County
Freezing rain is expected to begin overnight then change to rain by late Wednesday morning.
A prolonged period of 2 to 6 hours of freezing rain is expected presenting a threat of significant ice accumulations of near 10 millimetres in some locations.
Environment Canada says power outages are a possibility and travelling conditions are expected to deteriorate tomorrow morning as untreated surfaces become icy and slippery.