84 on Sunday, 30 tonight, and it's April 27!

[TheFugitive]

Sitting here in Pittsburgh where we had a very Summer-like Sat-Sun-Mon with temperatures in the 70's up to a high of 84 on Sunday afternoon.

Today it only got up to 43 and tonight there is a Freeze Warning with an expected low of 30.

We're almost in May.  I've never seen this in this part of the country.  Heck I never saw this when I lived hundreds of miles further to the North.