An upper-level low will bring some chillier conditions for western PA going into the weekend. On Friday night into Saturday, we can expect to see showers across the north and northwest portions of the state, perhaps stretching into central PA. That storm system has potential for some snowflakes at higher elevations and along the Allegheny Mountains. Some above-average temperatures and partly cloudy skies to begin the work week with fair conditions continuing into Wednesday. Some chillier weather returns late next week after Wednesday, possibly falling well below-average, with uncertain chances for showers.