Near-freezing temperatures will flow into parts of Southern Ontario during the early morning hours of Friday. This will bring the risk of widespread frost throughout parts of Central, Eastern and higher elevations of Southwestern Ontario. Temperatures will moderate somewhat after sunrise so the frost risk should come to an end by mid-morning.
UPDATE (Wed. PM): There are no changes to our initial forecast although the rain/snow mix for Northeastern Ontario doesn’t appear as widespread in the latest data so locations like Sudbury and Elliot Lake might not see any snow.
Scattered flurries over regions near Hudson Bay will spread further south on Thursday to include locations like Sandy Lake, Fort Hope, Kapuskasing and Cochrane. Limited accumulation is expected with at most a few centimetres of accumulation. In addition to this, a system will track through the Great Lakes bringing heavy precipitation mostly in the form of rain. However, during the early morning hours on Thursday, there might be some snow that mixes in with the rain on the far northern edge of the system as it affects the Elliot Lake, Temiskaming Shores and Sudbury area. With temperatures near the freezing mark, we don’t expect any significant accumulation although it could result in some slushy road conditions.
Moderate to heavy rainfall will work its way across Southern Ontario during the day on Thursday with embedded non-severe thunderstorms. The heaviest rainfall totals will be found through the Bruce Penisula and northeast of Georgian Bay where between 20-40mm of rain is possible. The rest of Southern Ontario can expect between 5-15mm of rain with higher amounts closer to Georgian Bay and Lake Huron. Rain will taper off by late Thursday evening as the system moves out over Quebec.
Colder air is expected to flow into the extreme northern part of Northern Ontario around Hudson Bay during the early part of Wednesday with temperatures remaining near the freezing mark throughout the day. Combined with a weak low-pressure over Hudson Bay will provide the potential for some flurries and wet snow beginning Wednesday morning and continuing through the day. Limited accumulation if anything at all is expected with at most around 5cm of accumulation for locations such as Fort Severn and Winisk. This may linger into early Thursday and reach even further south into Northeastern Ontario, but this will be covered in Thursday’s outlook.
Inclement weather isn’t currently expected in the forecasted region on this day.
Inclement weather isn’t currently expected in the forecasted region on this day.
Inclement weather isn’t currently expected in the forecasted region on this day.
Inclement weather isn’t currently expected in the forecasted region on this day.
UPDATE (Sun Night): Temperatures in the latest data are milder making the potential for flurries lower although it still can’t be ruled out. It will likely be very wet and melt on contact. We are holding with our initial map, but keep in mind that it likely won’t be as widespread.
Scattered showers will affect parts of Northeastern Ontario and up into Far Northern Ontario along Hudson Bay late Sunday with temperatures expected to drop to near the freezing mark early Monday morning. These colder temperatures could allow for the precipitation to transition over to some wet flurries particularly along the Quebec border. The risk for flurries will continue throughout the morning but should come to an end by the noon hour as the moisture moves out of the region. Very little accumulation is expected due to the warm group and earlier rainfall. At most, we can expect one or two wet slushy centimetres that will quickly melt later in the day.
Inclement weather isn’t currently expected in the forecasted region on this day.
Inclement weather isn’t currently expected in the forecasted region on this day.
Inclement weather isn’t currently expected in the forecasted region on this day.
See the rainfall forecast for Friday into Saturday. No other active weather is expected on Saturday.
Inclement weather isn’t currently expected in the forecasted region on this day.
See the rainfall forecast for Friday into Saturday. No other active weather is expected on Friday.
hick fog is expected to develop through parts of Northeastern Ontario overnight and into Thursday morning. It will likely reduce visibility to near-zero during the early morning hours which will create hazardous driving conditions within the affected area. Please travel with caution! The fog will burn off later in the morning after sunrise.
Thick fog is expected to develop through Central, Eastern and Northeastern Ontario overnight and into Thursday morning. It will likely reduce visibility to near-zero during the early morning hours which will create hazardous driving conditions within the affected area. Please travel with caution! The fog will burn off later in the morning after sunrise.
Inclement weather isn’t currently expected in the forecasted region on this day.
Patches of heavy fog are expected to develop overnight and into Wednesday morning throughout Northeastern Ontario. The fog could create near-zero visibility on the roads making travel hazardous - be sure to drive carefully in the region during the early morning hours. It will dissipate after sunrise.
Inclement weather isn’t currently expected in the forecasted region on this day.
