Noun and の adjective
はれ
天気予ほうでは、明日も明後日も明々後日も晴れでしょうって言ってたよ。
The weather forecast said that it will be clear tomorrow, a day after tomorrow, and two days from now.
予ほうは「晴れ後くもり」だし、かさはいらないんじゃない？
The forecast says "clear weather, with clouds later on," so I don't think you need an umbrella.
折角の誕生日だし、晴れて良かったですね。
It’s a good thing it’s clear out on your birthday, eh?
If you say something is going to clear up, you're usually talking about the weather. That makes it clear weather!
This has the same reading as the kanji you learned, meaning you know the reading!