Bonjour
To ask about the weather
what's the weather like ? ==>
Quel temps fait-il ?
For weather with adjectives as " beau/nice", "froid/cold", "chaud/hot", "doux/warm", "frais/cool", you'll use "FAIRE (il, 3rd pers. sing.) + adjective"
il fait beau
il fait froid
il fait chaud
il fait frais
il fait doux
if you use an adjective + -y , as it's windy, it's cloudy, it's sunny ... you'll use "il y a + noun"
il y a du soleil = it's sunny
il y a du vent = it's windy
il y a des nuages = it's cloudy
Then you have verbs as "pleuvoir/ to rain", "neiger/ to snow", "to freeze/geler", .. you'll use the 3e pers. sing : il + verbe
Il pleut = it's raining
il neige = it's snowing
il gèle = it's freezing
Of course you have expressions as
it's raining dogs and cats = il pleut des cordes
....
Hope this will help ☺☺☺