701 SXUS99 KFSD 152014 RERSUX RECORD EVENT REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 314 PM CDT MON APR 15 2002 ...HOTTEST SO EARLY IN THE SEASON AT SIOUX CITY IOWA... AT 310 PM CDT THE TEMPERATURE AT THE SIOUX CITY GATEWAY AIRPORT WAS 95 DEGREES. THIS SMASHES BY TEN DEGREES THE RECORD FOR THE DATE OF 85 DEGREES SET IN 1898. THIS IS THE HOTTEST TEMPERATURE RECORDED SO EARLY IN THE SEASON IN SIOUX CITY. ON APRIL 22 1980 THE TEMPERATURE HIT 97 DEGREES IN THE CITY.