A FREEZE WARNING is in effect from midnight MDT/1 am CDT/ tonight to 9 am MDT /10 am CDT/ Saturday. This includes Yuma-Kit Carson-Cheyenne CO-Cheyenne KS-Rawlins-Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock-Red Willow counties in east-central and northeast Colorado, northwest and west-central Kansas, and southwest Nebraska.