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December is only 4 days old, but the average monthly temperature is already 5.5 degrees below average. Highs only reached the upper 20s to mid 30s across the region on Thursday. KCI's high of 32 tied for the coldest high temperature this season. With high pressure nearing the viewing area tonight temperatures should drop into the teens once again. If it wasn't for some thin high clouds and a light wind overnight, I think upper single digits to lower teens would be possible in the metro. However, with those two things present I think mid teens are much more likely. Any way you look at it pretty cold!
The cold will stick around for Friday before a possible moderation arrives this weekend. Highs on Friday will be a few degrees 'warmer', but with a good W-SW breeze of 8-18 mph I would expect wind chills to reside in the 20s most of the day. Friday night temperatures will likely rise after midnight as a good southwest wind kicks in and clouds overspread the area as a clipper system moves through the upper Midwest.
Here is a look at the 18Z NAM surface forecast for 6 a.m. Saturday. Notic the clipper to our north and a west wind in Kansas City. With temperatures likely around 30 or better to start the day low to maybe mid 40s are possible Saturday.

The weekend temperature forecast will depend a lot on cloud cover and also how strong the front is that moves through the region on Saturday. The GFS is colder than the NAM. If the GFS wins it would be around 40 Saturday and in the 30s on Sunday. Right we are narrowing down the timing of the front and any cloud cover issues before we adjust the weekend forecast further. Either way it will likely be dry. If anything falls it may be a few flurries if the clipper moves farther south.
A lot of people are wondering about next week's possible storm. If the snowflake contest is going to end in the next week it would likely occur late Monday or on Tuesday. Low pressure will form to our south as a strong cold front is dropping south into our viewing area. This should lead to the chance of a mix changing to snow possibility for the area. If the GFS continues on its current thinking this would bring a good chance of accumulating snow to a majority of the area. It will be interesting to see how the NAM plays this starting tomorrow when the 84 hour panel reaches Monday, since the NAM hasn't been quite as cold as the GFS.
Anyway, here is an early look ahead and one snapshot from the 18Z GFS. This would be midnight heading into Tuesday morning as the 540 line is just south of Kansas City.

We'll look at the upper air support for this later. As there is still kind of a split flow. This storm would likely not get its act really together until it was east of our area. Still a lot of time between now and Monday though!
Thanks for stopping by the blog and please share your thoughts in the comments section.
Jeremy