Il est nuageux.
Eel eh nwah-ZHUH
It is cloudy.
Basic adjective form
Le ciel est couvert aujourd'hui.
Luh syel eh koo-VAIR oh-zhoor-DWEE
The sky is covered today.
couvert = covered, more natural than nuageux
On a un ciel de plomb aujourd'hui.
On ah uhn syel duh PLOHN oh-zhoor-DWEE
We have a lead sky today.
ciel de plomb = leaden sky, literary but used in speech
More French Weather Phrases