Simplify the following text for a Grade 8 native English-speaking person.
Original: The nights are always cool ( or colder in winter ) Daytime temperatures generally always rise about +9 \/ 10 CÂ ( +15 \/ 18 FÂ ) every day .
Simplified: The nights are always cool ( or colder in winter ) , with daytime temperatures generally rising about +9 \/ 10 Â C ( +15 \/ 18 Â F ) .