104 °F · body temp marked
Water104 °F
FeeFree to soak
Seasonyear-round
Landstate park
WhereThermopolis, Wyoming
DriveJackson ≈ 3 h 15, Denver ≈ 6 h 15, Colorado Springs ≈ 7 h 15
Wyoming gives this one away. The State Bath House in Hot Springs State Park is free, with an indoor and an outdoor pool of Big Spring water held at 104 degrees. Summer hours are 8 a.m. to 7 p.m. Monday to Saturday and noon to 7 p.m. Sunday; in winter it closes at 5:30 p.m. The outdoor pool closed on August 24, 2026 for about a month of ADA work, so check it's back before you count on it. Make a day of the park while you're here, since the terraces, a suspension footbridge and a bison herd are all inside it.
From Wyoming State Parks, Historic Sites & Trails, last checked 19 September 2026.