Cold start: We are not seeing the bitter cold air that we saw last week, but still moderately cold with 850 mb temperatures around -16 Celsius. So even with sunshine it's doubtful that we will make it past 20 degrees this afternoon.

You can still see the arctic still opened up through Tuesday morning. That gateway will allow for another cold day Tuesday as well.

Mid-Week Warm up:
On Thursday morning you can see the cold air retreat up towards northern Canada. The gate way closes a bit with warmer air coming in. The core of the coldest air is back in the polar regions of the world.

Another Shot of Cold Air: It doesn't last though with another 'clipper' system coming in on Friday with snow chances and especially more cold air. You can see the low the moves across Ohio and to the east coast.

The core of the coldest air comes down from the north again to southern Canada. This is a little troubling as we will see cold air through the weekend. Not as cold as last week but still very cold. A word of caution here, this is the only model carrying the cold air. As usual we'll wait for the other models to come around to this solution.