1) He was admiring the sea when it started raining (past continuous + past simple)
2) Look! It’s raining outside! (imperative + present continuous)
3) When we arrived it had already been raining for 3 days there (past simple + past perfect continuous)
4) How many weeks has it already been raining here? (present perfect continuous)
5) It has never been so windy and hot here (present perfect)
6) It has already been snowing for a week (present perfect continuous)
7) I think it is going to be stuffy tomorrow (to be going to)
8) Why didn’t you come to me at 2 p.m? – Yesterday it was raining at that time. I didn’t want to get wet. (past simple + past continuous + past simple)
9) Don’t forget to put the coat on. It’s chilly in the street. (present simple)
10) It’s 10 degrees below zero outside (present simple)