A special weather statement has been issued for Niagara with heavy rain tomorrow, changing over to snow in the overnight hours.
Environment Canada says Niagara will get 15 to 30 mm of rain during the day and evening tomorrow, and as the temperature falls it will turn into snow.
"Light showers and drizzle will give way to rain, heavy at times, Thursday afternoon and then change to snow after midnight Thursday night. Note that the partially frozen ground may have a reduced ability to absorb this rainfall."
A few centimetres of snow can be expected by Friday morning
"Considerable uncertainty remains regarding the track of the Colorado low responsible for this rainfall. Should the track of this low change, rainfall amounts could also change."