This Day in Weather History December 18

National Oceanic and Atmospheric Administration

1976: An abnormally cold December was interrupted by unseasonably warm weather on the 18th, particularly across about the southwestern third of Iowa where most locations climbed into the 60s. Many stations established daily records including Des Moines with a high of 64 F and Logan where the high of 72 F was only two degrees shy of the all-time state December record, which was set a full 12 days earlier in 1939. Other reported high temperatures included 64 F at Indianola and Mapleton, 65 F at Oakland, 66 F at Glenwood, Greenfield, and Jefferson, and 67 F at Sidney.

National Weather Service Des Moines