Riverton, WY – Much of central, western, and northern Wyoming is under an Extreme Heat Warning beginning Saturday as a prolonged stretch of unusually hot weather is expected to bring temperatures as high as 110 degrees in lower elevations.
According to the National Weather Service in Riverton, the warning remains in effect from noon MDT Saturday, July 11, through 9 p.m. MDT Monday, July 13, covering a large portion of the state. Impacted areas include Casper, Cody, Jackson, Riverton, Lander, Rock Springs, Green River, Pinedale, Star Valley, Worland, Thermopolis, Buffalo, Kemmerer, Powell, Greybull, Basin, Dubois, Big Piney, Afton, Alpine, Cokeville, and numerous surrounding communities.
Forecasters expect afternoon temperatures between 100 and 110 degrees at elevations below 6,000 feet. Communities between 6,000 and 7,500 feet could still see highs ranging from 90 to 100 degrees, creating dangerous conditions even in typically cooler mountain valleys.
The prolonged heat is expected to significantly increase the risk of heat-related illnesses, particularly for older adults, children, outdoor workers, and those participating in summer recreation. Travelers visiting destinations such as Jackson Hole, Flaming Gorge, and other outdoor attractions are encouraged to plan activities during the cooler morning or evening hours.
The National Weather Service urges residents and visitors to drink plenty of water, spend time in air-conditioned buildings whenever possible, avoid prolonged exposure to direct sunlight, and check on neighbors, family members, and anyone who may be vulnerable to the heat.
Anyone working or exercising outdoors should take frequent breaks, wear lightweight clothing, and be alert for signs of heat exhaustion or heat stroke. Emergency officials emphasize that prolonged exposure to extreme heat can quickly become life-threatening if precautions are not taken.
