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Charles Willgren from Fort Collins, Colorado, United States CC BY-SA 4.0 Wikimedia Commons

Hot Springs State Park

Park

Centering on Thermopolis's mineral springs, Hot Springs State Park features geothermal pools and a public bathhouse; visitors soak, view travertine formations and explore nearby museum exhibits.

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In this guide

Hot Springs State Park essentials

Address: Hot Springs State Park, Thermopolis, WY
Hours: Park open daily (daylight hours)
Admission: Park access free; some facilities such as the Hot Springs State Park bathhouse have modest fees (subject to change)

About Hot Springs State Park

Hot Springs State Park sits in the town of Thermopolis, Wyoming, and protects geothermal mineral springs and their associated terrace deposits that are central to the town. The springs are the park’s defining natural feature and have been used for recreation and therapeutic bathing.

The park includes mineral terraces and developed bathing facilities where visitors can experience the warm mineral waters, plus walking areas around the spring formations. The site also forms a focal point for tourism in Thermopolis and sits beside the Big Horn River corridor.

The springs were used long before modern development for bathing and local uses, and the area has been managed to balance public access with protection of the thermal features. Management has focused on maintaining bathing facilities and conserving the distinctive mineral deposits.

Geographically the park lies within Thermopolis in central Wyoming and is adjacent to the Big Horn River, within easy reach of the town’s services and other local attractions.

  • Location advantage: Located within the town of Thermopolis, making services and visitor facilities readily available close to the springs.

What to See#

  • Mineral terraces: An extensive series of mineral terraces and deposits formed by the hot springs; terraces are a prominent visual feature adjacent to the town.
  • Bathing facilities: Public bathing facilities and maintained soaking pools that allow visitors to experience the hot mineral water.
When to Go

Best Time to Visit Hot Springs State Park

Summer and autumn are easiest for access and hiking; winter is dramatic for steam and quiet visits.

Summer
Jun-Aug · 60-85°F (16-29°C)
Warm days, good for hiking and viewing terraces.
Autumn
Sep-Oct · 35-65°F (2-18°C)
Crisp air and fewer tourists; terraces can be especially photogenic with low sun.
Winter
Nov-Mar · -10-30°F (-23--1°C)
Cold outside but spectacular steam rising off the hot springs - dress warmly for outdoor viewing.

Weather & Climate near Hot Springs State Park

Climate

Hot Springs State Park's climate is classified as Cold Semi-Arid - Cold Semi-Arid climate with warm summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -14°C to 32°C. Semi-arid with limited rainfall.

Air Quality: AQI 21 Good
Temperature & Rainfall
Temperature Range
32°
Warmest Month
-14°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -14° - 1° -11° 10 mm - - 2.6 m/s - -
February - -11° - 5° -7° 9 mm - - 2.8 m/s - -
March - -5° - 11° 0° 20 mm - - 3.5 m/s - -
April - 0° - 16° 6° 36 mm - - 3.8 m/s - -
May - 5° - 22° 13° 55 mm - - 3.7 m/s - -
June - 10° - 28° 19° 38 mm - - 3.5 m/s - -
July - 13° - 32° 23° 19 mm - - 3.2 m/s - -
August - 12° - 32° 22° 16 mm - - 3.1 m/s - -
September - 6° - 25° 16° 27 mm - - 3.0 m/s - -
October - 0° - 17° 7° 27 mm - - 2.9 m/s - -
November - -7° - 7° -3° 14 mm - - 2.9 m/s - -
December - -13° - 2° -10° 11 mm - - 2.6 m/s - -
Getting There & Around

How to Get to Hot Springs State Park

Hot Springs State Park is in Thermopolis, Wyoming. It is accessible via US‑20/US‑287 and local roads from larger Wyoming towns; Thermopolis is about a 2.5-3 hour drive from Casper. The park has parking near the main bathhouse and terrace areas.

Tips for Visiting Hot Springs State Park

  • Visit the state bath house for a soak in mineral water if open and staffed - it's the main practical attraction.
  • Combine a short walk to the hot spring terraces with a tour of the adjacent town of Thermopolis for museums and visitor services.
  • Bison herd viewing is seasonal - check park notices for best times and public viewing areas.