000 SXUS75 KRIW 290732 RERRIW RECORD EVENT REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1226 AM MST WED NOV 29 2023 ...RECORD LOW TEMPERATURE SET AT RIVERTON WY... A RECORD LOW TEMPERATURE OF -9 WAS SET AT RIVERTON WY YESTERDAY, NOVEMBER 28TH, 2023. THIS BREAKS THE OLD RECORD OF -3 SET IN 2015. RECORDS FOR THIS SITE HAVE BEEN KEPT SINCE 1998. $$