Hot springs in Wyoming

The pools here are for hotel guests only, and there's no public day pass. The one way in without a room is a spa treatment, which includes day use of the pools and fitness center. Guests get a 70-foot mineral pool at about 96-98 degrees and teepee-covered soaking pools at 100-112, all heated by the spring. Hours are 7 am to 9 pm, apart from maintenance: the big pool is closed Tuesdays and the teepee pools Wednesdays, each until 5 pm. If you just want a soak, the free Hobo Pool is two blocks away.

Just north of Thermopolis on US 20, this RV park describes its pool as the largest mineral pool in Wyoming, with a bath house and showers, a privacy wall at one end and loungers along the east side. It's set up for campers. The site lists RV, tent and cabin rates (a 30-amp RV site is $35 plus tax for two people) but says nothing about day visitors, water temperature or season. If you're not camping, ask before you count on a soak. If you are, the pool is the reason to pick this park over a plain one.

About 20 minutes south of Jackson, over a red bridge across the Snake River, a nonprofit conservancy runs this soaking park on 95 acres. Four mineral pools sit at 100-104 degrees, with a children's pool at 80-90 and a cold plunge at 48-51; two pools are ADA-accessible. You soak in 105-minute sessions, five a day starting at 9:00 AM, and reservations are strongly recommended because walk-ins get in only if there's room. It's closed Wednesdays. Adults pay $26.25, residents $18.75, and under-2s are free. Book the session first and plan the rest of the day around it.

The family option in Thermopolis: a concession inside Hot Springs State Park with an indoor main pool and waterfall, a year-round slide, a baby pool, hot tubs at 100-105 degrees, a steam room and a cedar sauna. Outside there's a 94-98 degree pool and three canopied hot tubs. It's open seven days a week. Each half has a cleaning day, and the indoor pool shuts after 4 pm on Tuesdays and the outdoor pool after 4 pm on Thursdays, so go early on those days. Admission is $15.50 for ages 5 to 62 and $12.50 for 63 and over.

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.

Saratoga's town pool costs nothing and never closes: it's free and open 24 hours a day all year, on the west bank of the North Platte behind the municipal swimming pool at the east end of Walnut Street. The main pool runs from about 106 degrees at its coolest to 119 at the hot end, which is hot enough to scald, so test the water before you settle in or use the Not-So-Hot Pool next door, around 100. Swimsuits are required, and alcohol, tobacco, glass and open containers are banned. There's a bath house with showers and restrooms.

Up a forest road off the Hoback Canyon, on Bridger-Teton National Forest land beside Granite Creek Campground, Granite Hot Springs is a soak you have to earn. In summer you can drive in by turning off US 189/191 onto Granite Creek Road and following it about 8 miles. Once the road closes for winter, the only ways in are snowmobile, skis, fat bike or dogsled, which turns a soak into an expedition. It shuts entirely in the shoulder seasons. Check the Bridger-Teton Forest Service page for the current fee, hours and opening dates before you set off.

Read the warnings first. Naegleria fowleri, the brain-eating amoeba, has been found in Huckleberry Hot Springs and in Polecat Creek, so keep your head out of the water. The springs themselves are closed to soaking; only Polecat Creek, a mixed stream warmed by their runoff, is legal. Spring water in the area reaches 160°F and thermal crusts can be thin, so stay on solid ground. The walk is about half a mile from Flagg Ranch with a creek ford, and it's snowbound in winter. The Park Service doesn't post current trail conditions online, so ask a ranger before you set out.

Closed. Star Plunge, the commercial pool complex inside Hot Springs State Park, has been shut since January 14, 2025, when its management agreement expired in the middle of a court fight over the concession. On July 31, 2026 Wyoming State Parks announced a tentative settlement meant to let it reopen under a new long-term concessionaire, but it hasn't named one or set a date. Treat it as closed until the state posts an opening. In the meantime, the free State Bath House and Hellie's Tepee Pools are open in the same park.

Closed. Boiling River, once Yellowstone's best-known river soak near Mammoth Hot Springs, has been shut since the June 2022 flood. The Park Service says swimming there is not possible and gives no reopening date, so don't plan a trip around it. Soaking in the hot springs themselves is prohibited across the park, and thermal water can carry organisms that cause rashes, stomach illness and other infections. The Firehole Swim Area, the park's other river swim, was closed as well. Check the park's swimming page before you count on either.