Simplify the following text for a Grade 6 native English-speaking person.
Original: Almost all this rain falls between November and April , and only on the eastern slopes of the Iron Range is the median rainfall between June and September above 5mm ( 0.2 inches ) .
Simplified: Most of this rain falls between November and April . Only on the eastern slopes of the Iron Range is the median rainfall between June and September above 5mm ( 0.2 inches ) .