Weather
noun
What is the heaven energy? If you think about it, that's all the stuff that falls on us from the sky. Lightning, rain, snow, hail... What is all of that? It's the weather.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
今日は天気がわるいです。
The weather is bad today.
王子の気分は、その日の天気によります。
The prince's mood depends on the daily weather.
休みの日の天気はくもりだ。
The weather on my day off is cloudy.