Heavy snow, with accumulations of about 10 centimetres, are expected Friday, Environment Canada says.
The snow is expected to end near midnight, before a period of clearing takes place. The low temperature is expected to be -9 C.
Expect increasing cloudiness early Saturday morning, with a 30 per cent chance of flurries in the afternoon.
The high will be -5 C.
A mix of sun and cloud is forecast for Sunday with a high of -8 C.