Pattern change for the beginning of December

You don't need a meteorologist to tell you that the month of November has been cold, very cold.  As of the 28th, monthly temperatures are nearly eight degrees below average!  But if you're looking for a little light at the end of the tunnel, we just might have it.  Temperatures over the weekend will near 40 degrees and above, but then quickly drop back just in time for the beginning of December.  And if you're worried we'll be back into the deep freeze for the first of the month, I just might have some good news.  A pattern change within the first week will allow temperatures to be back near normal, which now are in the upper 30's. 

Extremely warm air in Alaska and western Canada helped push the jet stream down across the U.S. during the month of November. While it will be colder the first few days of December, the jet stream pattern will be a little less blocky and more fast moving.  This keeps the jet stream closer to the U.S/Canadian border helping keep the extremely cold air north.  Now, we'll likely get some colder days in the mix but at this point, it doesn't look like we'll see those extreme cold snaps for the first week and a half of the month.  Hopefully this pattern will hold up through the entire month!