Snow showers will diminish over the mountains this evening as a low pressure system moves east on to the plains. Occasional mountain snow showers will continue overnight and on Sunday as a weak secondary disturbance drops in from the northwest. A very cold airmass is in place with temperatures running about 20 degrees below normal, near record lows are expected on Sunday and Monday mornings. A generally dry workweek is anticipated with only a few mountain showers from time to time, temperatures will return to seasonal levels by midweek.   (Please visit http://weather.gov/gjt for more information.)