The moisture is the remnants of Tropical Storm Isaac, said Tony Mach, meteorologist with the National Weather Service in Harrisburg.
Hanover reported 0.33 inches of rainfall over the weekend, he said.
"The showers were hit and miss so some areas of York County got heavy showers and some didn't get much," Mach said.
Showers and thunderstorms are likely Monday evening and overnight into Tuesday.
The humidity will also linger into Tuesday, and thunderstorms on Tuesday could produce up to two inches of heavy rainfall.
On Wednesday showers and thunderstorms are likely again with a high temperature near 84.
Thursday will be mostly sunny with a high near 87.
Friday will also be mostly sunny with highs in the 80s.
There is a chance of showers again on Saturday and Sunday, with high temperatures near 80.