Listen to the whole passage
Listen to the whole passage once first, then practice sentence by sentence.
The first line is the other person opening the conversation; the "You" lines are suggestions for you to practice saying in this scenario (not a back-and-forth dialogue).
A friend chatting with you
你好，今天天气怎么样？
Hello, how is the weather today?
You
你好，今天天气很好。
Hello, the weather is nice today.
You
今天很热。
It's hot today.
You
昨天有点冷。
It was a bit cold yesterday.
You
现在下雨了。
It's raining now.
You
明天天气怎么样？
How will the weather be tomorrow?
You
明天不冷，也不热。
Tomorrow it's neither cold nor hot.
You
天气太热了，我想喝水。
It's so hot, I want some water.