the weather

here in my city make much hot, sometimes it reaches 40°, so here buy many air conditioner for can sleep well, i want one but is very expensive, only can hope the winter.

You can say: 

The weather here in my city(or county) it very hot. Sometimes it reaches 40°, so many people here like to buy(or purches) ari conditioners, so they can sleep well. I want one, but is to expensive, all I can do now is hope for the winter to come.

I Added to come.

the weather

Here in my city it is very hot, sometimes it (even) reaches 40°, so here people buy air conditioners so that they can sleep well. I want one but it is very expensive, I only can hope that winter comes soon(/quickly).