Special Weather Statement National Weather Service Riverton WY 134 PM MDT Fri Sep 3 2021 Jackson Hole-Star Valley-Upper Green River Basin Foothills- Upper Green River Basin-South Lincoln County- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, Thayne, Pinedale, La Barge, Big Piney, Farson, Kemmerer, and Cokeville 134 PM MDT Fri Sep 3 2021 ...Near Freezing Temperatures in Western Wyoming Valleys Saturday Morning... This is a special weather statement from the National Weather Service Office in Riverton. * WHAT...Temperatures will drop to freezing or just below freezing. * WHERE...Western Wyoming valleys, including Jackson Hole, Star Valley, Cokeville, Big Piney, and Pinedale. * WHEN...Saturday morning between 3 AM and 9 AM. * ADDITIONAL DETAILS...Low-lying areas, especially those near creeks, streams, and rivers, are likely to see temperatures drop to 28 to 32 degrees early Saturday morning. Sensitive flowers and vegetables should be protected.