It's raining right now, but I think it will clear up by two.
It was good that it ended up being very sunny yesterday.
I’m finally getting married to Fugu and I want you to be at our wedding. I’ll send you an invitation with all the details later. The reception will be outside, so I hope it’s sunny that day.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means clear up, so the verb vocab version is to clear up. It also means to become sunny as well.
The reading you learned with the kanji is the one you use here. One of those words where the kun'yomi's going to be more useful.