The 10-day span for Mercer runs from a high near 80° on Friday down to 51° overnight on Monday. Models drop roughly 0.94 in of precipitation across the stretch — watch Sunday (79%). Wind is the one to watch: gusts to 25 mph around Sunday. The NWS alert board for this area is currently clear. Right now Mercer is about 7° cooler than nearby Detroit. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Mercer, PA · Elev 1,296 ft · 41.23°N, 80.24°W · Pennsylvania · Forecast computed for these exact coordinates