Drier air will spread across Colorado Wednesday...in a northwest flow aloft...as high pressure builds to the west. The day should start off on the chilly side...with morning lows in the single digits and teens in the mountains and southern valleys...and teens to mid 20s in the east. Mostly sunny skies will blanket the region through the day...and high temperatures are expected o climb to the 20s and 30s in the mountains...the 40s over the valleys and to the 50s throughout the eastern plains.   (Please visit http://weather.gov/pub for more information.)