SXUS73 KFSD 011713 RERFSD RECORD EVENT REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1210 PM FRI JUN 1 2012 ...RECORD AVERAGE MAXIMUM TEMPERATURE SET AT SIOUX FALLS SD... THE RECORD AVERAGE MAXIMUM TEMPERATURE FOR MAY AT JOE FOSS FIELD IN SIOUX FALLS WAS 73.6 DEGREES. THE PREVIOUS RECORD WAS 70.4 DEGREES...WHICH WAS SET WAY BACK IN 1934...ONE OF THE WORST YEARS FOR SEVERE DUST STORMS DURING THE DUST BOWL YEARS. $$