Stationary front messes with Chicago

Yesterday saw some really unusual temperatures at IDTWHQ:

You don't often see the day's low temperature at 14:16 followed by the day's high at 17:09. That was just weird. 

A similar thing happened at Chicago's official weather station, O'Hare, except the temperature bottomed out around 11am and peaked around 5pm.

Today it's just gray and seasonably cool. It's a lot easier to pick clothes when the temperature curve is flatter, and goes the way you'd expect.