SXUS73 KFSD 300644 RERFSD RECORD EVENT REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 144 AM CDT SAT JUN 30 2018 ...RECORD WARM LOW TEMPERATURE TIED AT SIOUX FALLS SD YESTERDAY... THE LOW TEMPERATURE IN SIOUX FALLS ON FRIDAY WAS 75 DEGREES, WHICH TIES THE RECORD FOR THE WARMEST LOW TEMPERATURE ON JUNE 29TH. THE RECORD OF 75 DEGREES WAS PREVIOUSLY SET IN 1931 AND AGAIN IN 1991. $$