SXUS73 KFSD 231901 RERFSD RECORD EVENT REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 201 PM CDT SAT JUL 23 2016 ...WARMEST MINIMUM TEMPERATURE RECORD BROKEN AT SIOUX FALLS SD... THE LOWEST TEMPERATURE RECORDED AT SIOUX FALLS JOE FOSS FIELD AIRPORT YESTERDAY...FRIDAY JULY 22ND...WAS 78 DEGREES AT 555 AM CDT. THIS WAS WARMER THAN THE PREVIOUS DAILY WARMEST MINIMUM RECORD OF 76 DEGREES...SET BACK IN THE HEAT WAVE OF 2012. $$