Hot Springs State Park

Park State park featuring geothermal hot springs and baths

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.

Main image

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.
Hot Springs State Park
Hot Springs State Park, Thermopolis, WY
43.6552, -108.1993
Park open daily (daylight hours)
Park access free; some facilities such as the Hot Springs State Park bathhouse have modest fees (subject to change)

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.

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.

Temperature & Rainfall
Temperature Range
32°
Warmest Month
-14°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of 1°C and lows of -14°C. Light rainfall.

Comfort

-7°
Feels Like Freezing
-7°C
Temperature
-14°

Weather

10 mm
Rainfall
2.6 m/s
Wind
Calm

February

February is freezing with highs of 5°C and lows of -10°C. The driest month with just 9 mm.

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-11°

Weather

9 mm
Rainfall
2.8 m/s
Wind
Calm

March

March is cold with highs of 11°C and lows of -5°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
-5° 11°

Weather

20 mm
Rainfall
3.5 m/s
Wind
Light Breeze

April

April is cold with highs of 16°C and lows of 0°C. Moderate rainfall (36 mm).

Comfort

Feels Like Cold
C
Temperature
16°

Weather

36 mm
Rainfall
3.8 m/s
Wind
Light Breeze

May

May is cool with highs of 22°C and lows of 5°C. The wettest month with 55 mm of rain.

Comfort

13°
Feels Like Cool
13°C
Temperature
22°

Weather

55 mm
Rainfall
3.7 m/s
Wind
Light Breeze

June

June is mild with highs of 28°C and lows of 10°C. Moderate rainfall (38 mm).

Comfort

19°
Feels Like Mild
19°C
Temperature
10° 28°

Weather

38 mm
Rainfall
3.5 m/s
Wind
Light Breeze

July

July is the warmest month with highs of 32°C and lows of 13°C. Light rainfall.

Comfort

23°
Feels Like Mild
23°C
Temperature
13° 32°

Weather

19 mm
Rainfall
3.2 m/s
Wind
Light Breeze

August

August is mild with highs of 32°C and lows of 12°C. Light rainfall.

Comfort

22°
Feels Like Mild
22°C
Temperature
12° 32°

Weather

16 mm
Rainfall
3.1 m/s
Wind
Light Breeze

September

September is cool with highs of 25°C and lows of 6°C. Light rainfall.

Comfort

16°
Feels Like Cool
16°C
Temperature
25°

Weather

27 mm
Rainfall
3.0 m/s
Wind
Light Breeze

October

October is cold with highs of 17°C and lows of 0°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
17°

Weather

27 mm
Rainfall
2.9 m/s
Wind
Calm

November

November is cold with highs of 7°C and lows of -7°C. Light rainfall.

Comfort

Feels Like Cold
C
Temperature
-7°

Weather

14 mm
Rainfall
2.9 m/s
Wind
Calm

December

December is freezing with highs of 2°C and lows of -13°C. Light rainfall.

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-13°

Weather

11 mm
Rainfall
2.6 m/s
Wind
Calm

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