If you haven't been outside yet, don't go out unless you have your woolies on.
The temperature went into a deep dive overnight with windchills in the double digits.
The Weather Network's Doug Gilham says this is the coldest wake-up of the season so far, but the good news is that it is not sticking around for long.
In fact, he jokes the Arctic air is more of a one-night-stand than a long term commitment.
Temperatures return to seasonal norms tomorrow.