Find the opposite of Le jour

Asap this all has to do with france thx. due soon.

Translate this to french asap without google translate: the weather this weekend will be nice. on saturday, it will be 66 degrees farenheit and sunny. on sunday, it will be 79 degrees farenheit and sunny. on saturday, you should do things like go to the park and bicycle. on sunday, it will be too hot for these things, so you should go shopping or swimming.

What are the different forms of "avoir" and how do you use them?