Environment Canada has issued snow squall watches and warnings and a wind chill warning for much of southwestern Ontario.
Snow squall watches and warnings are in place across the region as cold northwesterly winds over Lake Huron generate snow squalls and flurries.
Forecasters say snowfall amounts of 5 to 10 centimetres are possible Monday, and the squalls are expected to intensify through evening with snowfall amounts that could reach up to 15 centimetres.
In addition, low visibilities in the heavier snow squalls could make for hazardous driving condition.
For Sarnia, Petrolia and western Lambton County, the snow squalls are expected to develop later Monday night when winds shift more in a more northerly direction.
Forecasters are also calling for wind chills of -30 C to -35 C Monday night and Tuesday morning in many areas to the north and east of London.
An arctic airmass has settled over southern Ontario and the combination of cold temperatures and moderate northwesterly winds is expected to produce wind chill values -30 C or colder.
To find the latest watches and warnings from Environment Canada visit: london.ctvnews.ca/weather
Midwestern Ontario hard hit by weather
The challenging weather was back early in midwestern Ontario causing numerous crashes in Grey County, with OPP reportedly responding to 14 separate crashes on Sunday.
One of those calls was a multi-vehicle collision on Highway 10 south of Dundalk shortly before noon that involved a total of 11 vehicles. Grey County OPP say white-out conditions were in effect at the time of the collision.
Fortunately only minor injuries were reported, though Highway 10 was closed from Dundalk to Corbetton for several hours.
Huron and Bruce County have both announced they exceeded their snow-removal budgets for 2013, with Huron spending $4.1 million and Bruce spending $3.2 million.
Huron County also say it has already spent $500,000 on snow removal in the first three weeks of 2014.
