(1) A: each cell represents 1 day;

(2) Answer: In June, sunny days are at most 1 1 day, and rainy days are at least 5 days.

(3) 1 1-6=5 (days)

A: Cloudy days in June are 5 days less than sunny days;

(4) Arrange rainy days, cloudy days, cloudy days and sunny days from less to more as follows:

rainy day