000 SXUS75 KRIW 290735 RERGEY RECORD EVENT REPORT NATIONAL WEATHER SERVICE RIVERTON WY 0130 AM MDT SUN OCT 29 2023 ...RECORD LOW TEMPERATURE SET AT GREYBULL WY... A RECORD LOW TEMPERATURE OF 6 WAS SET AT GREYBULL WY YESTERDAY, SATURDAY OCTOBER 28TH, 2023. THIS BREAKS THE OLD RECORD OF 11 SET ON THIS DATE IN 2019. $$