It's a hot day.
It's a cool day.
It's a windy day.
It's a rainy day.
It's a cloudy day.
There is no breeze today.
It's a thunderstorm.
I am cold!
I got the cold chills!
Heavy dew condensation is present!
It's going to be a sunny day today!
It's a clear day!
Come in because of the evening cold damp air!
A cloudy day. It's to be - implied statement.
A heavy rain cloud is coming!