SXUS73 KDMX 060639 RERDMX RECORD EVENT REPORT NATIONAL WEATHER SERVICE DES MOINES IA 139 AM CDT THU AUG 6 2020 ...RECORD DAILY LOW TEMPERATURE SET AT OTTUMWA AUGUST 5TH... A RECORD DAILY MINIMUM TEMPERATURE OF 49 DEGREES WAS SET AT OTTUMWA THE MORNING OF AUGUST 5TH. THIS BREAKS THE PREVIOUS RECORD OF 50 DEGREES SET IN 1994. $$ HAGENHOFF