Traditional Culture Encyclopedia - Weather forecast - What terrible weather! Isn't weather an uncountable noun? How to use what

What terrible weather! Isn't weather an uncountable noun? How to use what

Grammatically speaking, what terrible weather this should be!

But more people like to say in spoken English that the weather is terrible! I think there are good weather and bad weather, so there are two kinds, so when someone says something about bad weather! Time should be compared with sunny weather, just add an "A".

Hope to adopt! thank you