Travel could become difficult if the forecast plays out.
A snow squall warning is in effect for the Barrie-Orllia-Midland and Colligwood-area, north to Bracebridge.
Snow squalls will be shifting from time to time today.
Accumulations of 15-25 cm are possible by Saturday morning.
However, forecasters say a snow squall band may develop this evening from the Bruce Peninsula to the Orillia-area, which could become very slow moving or stationary for several hours tonight.
Unde this band, snowfall accumulations could be well in excess of 30 cm by Saturday morning.