Why is it always so cold?

Current Conditions 12:00 PM
Temperature - 8.5°F   
Feels Like - 1°F   
Dew point - 0°F   
Relative humidity - 68%  
Wind direction - W  
Wind speed - 4 mph   
Barometric pressure - 1026.8 mb rising slowly
Sky conditions - Clear
Current conditions courtesy of Wunderground from the Third Ward, Eau Claire station

It may not be the polar vortex but a lot of high pressure is sitting over most of the country in between the Rockies and Appalachian mountains. Storms along the east coast have moved out but now there is some precipitation in the Dakotas moving East but I don't believe anything major will come of it since there isn't any kind of southerly wind to draw up warm water vapor from the gulf. 

Wundermap

For tomorrow expect higher winds but with slightly lower pressure. There is a stationary front which I suspect will move east and bring in some lower pressure. This won't raise the temps much but there should be a little more humidity and clouds coming in.