What does the man mean?

W: If the weather tomorrow is as hot as today, we may as well give up the idea of playing tennis in the afternoon.
M: Oh. I don’ t dunk it’ll last long. The weather forecast says it will cloud-over by mid-afternoon.

W: What do you want to know, young fellow?
M: May I ask when we will have our mid-term and final?
W: Of course. Your mid-term will be in the fifth week, and the final will be at the end of this quarter.