[Old Professer]

Your map shows the St. Louis area at 3C above your base period; for the month of Feb so far, 22 days have been below average with over 12 being more than ten degrees F below.

http://www.wunderground.com/history/airport/KSTL/2008/2/27/MonthlyHistory.html

An unusually high day near the 1st. of the month is the only convincing point.

Surrounding stations will concur.

Are they using real time raw observations or more of the corrected, adjusted stuff?

[cogitator]

Does the fact the map was for January affect your analysis? (You probably noticed; if not, this is FYI.)

I can't get a February map until early March. I'll be curious to see how much different it is than January. There will be some differences, of course.