Here is more from CTP:
The core of the cold air at 850mb (-6C to -9C or 2.5SD below
normal) moves over CPA tomorrow - which could be the coldest
day until fall (in mini-max terms) with fcst highs in the mid
30s NW to around 50F SE or -15 to -25F below climo. When
factoring in a blustery WNW wind 30+ mph, it will feel almost
winterlike. The unseasonably cold WNW flow will support
numerous rain and snow showers with graupel possible in open
cellular low topped convection. Fcst soundings support trending
wind gusts above base NBM toward the 90th percentile/NBM 4.1EXP.
Showers fade Wednesday night as high pressure and associated
drier air starts to filter into CPA. Freeze conditions are
likely Wednesday night with headlines possible where the
growing season is active. Lows range from upper 20s in the mtns
to the lower 30s in the central and southeastern ridge/valley
region (about 5-10F below normal).