Cooler...moist air will spill through southern and eastern Colorado...bringing a chance of rain showers and a few thunderstorms to the viewing area...along with a slight chance of snow showers in higher areas. Temperatures are going to be cooler region-wide...with highs in the 40s and 50s in the mountains and southern valleys...and ranging in the upper 50s to around 70 degrees on the eastern plains. A short period of warmer temperatures and slightly warmer temperatures should return Friday. (Please visit http://weather.gov/pub for more information.)