Phil Connors is a professional weatherman, meaning that he knows a thing or two about how the weather works. When Mrs. Lancaster mentions the possibility of a blizzard to him, Phil responds,

PHIL: We may catch a break and have that blizzard blow by us.

He then goes on to talk about all the specific forces that create snow before adding,

PHIL: Did you want to talk about the weather or were you just making chitchat?

This question pretty much tells us how much of a jerk Phil can be to people who are just trying to be nice—he uses his superior weatherman weather knowledge to undermine people.

Later in the movie, the unchanging weather of Groundhog Day becomes a symbol of the total defeat that Phil is experiencing. He eventually gets to the point where he snaps and says,

PHIL: I'll give you a winter prediction. It's gonna be cold, it's gonna be gray, and it's gonna last you for the rest of your life.

Pretty harsh, eh? Well you try living the same day for ten years and see how you feel.