Is it just "星期四会阴天"?
Also if you say "Thursday will be cloudy" it translates to "星期四有风”, so do you also say "星期四会有热”?
Chinese Language Stack Exchange is a question and answer site for students, teachers, and linguists wanting to discuss the finer points of the Chinese language. It only takes a minute to sign up.
Sign up to join this community"thursday will be cloudy" means "星期四(是)阴天" or "星期四(是)多云".
有风 means 'windy', not 'cloudy'.
We usually say "星期四(天气)(会)很热”, "星期四有风”, "星期四(是)晴天”, "星期四有雨”, "星期四(可能)(会)下雨” and etc.