Wind chill values near minus 30 late tonight into Wednesday morning.
Very cold Arctic air is once again becoming well entrenched over Southern Ontario. Temperatures are expected to fall to near minus 20 in many areas tonight accompanied by winds up to 20 km/h. This will result in wind chill values close to minus 30 late tonight into Wednesday morning. The extreme cold will ease during the day Wednesday as temperatures climb.
Anyone venturing outdoors, especially for an extended period, should dress accordingly with as little exposed skin as possible.