SXUS73 KFSD 150724 RERFSD RECORD EVENT REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 223 AM CDT MON OCT 15 2018 ...RECORD COLD MAXIMUM TEMPERATURE SET AT SIOUX FALLS SD YESTERDAY... THE HIGH TEMPERATURE AT SIOUX FALLS JOE FOSS FIELD AIRPORT ONLY REACHED 39 DEGREES ON SUNDAY...OCTOBER 14TH. THIS IS THE COLDEST HIGH TEMPERATURE RECORDED FOR THE DATE. THE PREVIOUS RECORD WAS 44 DEGREES...SET FIRST IN 1937...AND SUBSEQUENTLY TIED IN 1943...1969...AND 2009. $$