1The state of the atmosphere — overall weather conditions including temperature, humidity, wind, etc.
今日は天気がいいから散歩に行こう。
The weather is nice today, so let's go for a walk.
天気予報で明日の天気を確認してから出かけたほうがいい。
You should check the weather forecast for tomorrow before going out.
急に天気が変わって、洗濯物を取り込まなければならなかった。
The weather suddenly changed, so I had to bring in the laundry.
2Fine or fair weather — used to indicate good, typically sunny weather.
遠足の日は天気に恵まれて、みんな楽しめた。
We were blessed with good weather on the excursion day, and everyone enjoyed it.
天気予報によると、週末には天気になるらしい。
According to the forecast, it seems the weather will turn fine over the weekend.
長い梅雨がようやく明けて、天気になった。
The long rainy season has finally ended, and the weather has turned fine.