Little Warm Spring discharges at 77 degrees Fahrenheit just 42 meters from Three Spear Ranch Access Road at 7,403 feet elevation. The spring runs 41 degrees above the 35.8-degree ambient temperature in terrain receiving 103 inches of annual snow.
The thermal feature sits in upper Green River valley ranchland where precipitation totals 21 inches annually. The roadside location places the spring in working private property, surrounded by irrigated hay meadows and seasonal cattle range at the interface between valley bottom and mountain slopes.
History of Little Warm Spring
Documentation of historical development remains sparse. The spring likely provided water for early ranching operations in this remote valley, though commercial thermal exploitation never occurred. Current status involves private land with limited historical record available.
Access crosses private property requiring landowner permission. The roadside location presents no technical challenges if permission granted. Green River Lakes Lodge, 27.7 kilometers north, offers day-use and overnight rental. Winter access becomes impassable when snow closes valley roads, typically November through May.
Is Little Warm Spring worth visiting?
Best for
- Easy day trips
- Overnight camping trips
Little Warm Spring is well suited for easy day trips and overnight camping trips.
Annual Precip: 21.5 in
Annual Snow: 103.9 in
December
Air 14°F · Water 77°F · +63° contrast
January
Air 16°F · Water 77°F · +61° contrast
February
Air 17°F · Water 77°F · +61° contrast
December offers 48°F more contrast than July
Overview
The Green River Lakes Lodge is located 50 miles north of Pinedale, Wyoming. The lodge is available as a rental for day use events such as weddings, family reunions, or meetings for up to 50 guests, or as an overnight rental for smaller groups of up to 12 guests.
Recreation
During the summer months, hiking and horseback riding into the Bridger Wilderness and Wind River Range are popular activities enjoyed by visitors to the area. The lake is open to small watercraft only, making it...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Warm layers
Cold air before and after soaking
Camping gear
Nearby camping at Green River Lake Lodge
Trash bag
Pack out what you pack in
4 miles from Pinedale, WY
USGS Quad: (DUBOIS 7.5) · PP 492: 107.0 · NOAA: 2.0 · AMS Map: THERMOPOLIS
What is the water temperature at Little Warm Spring?
Little Warm Spring has a water temperature of 77°F (25°C). This is a warm thermal spring.
Where is Little Warm Spring located?
Little Warm Spring is located in Sublette County, Wyoming at 7,403 feet elevation, near Pinedale. Coordinates: 43.5200°N, 109.6690°W.
How do I get to Little Warm Spring?
Little Warm Spring has Roadside road access, with the nearest road being Three Spear Ranch Access Road (Private) (140 ft from the road).
Can I camp near Little Warm Spring?
Yes, Green River Lake Lodge is located nearby (17.2 miles away).
Is it safe to soak at Little Warm Spring?
Little Warm Spring is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Little Warm Spring crowded?
Little Warm Spring is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Little Warm Spring?
Essentials for Little Warm Spring: swimsuit, towel, water bottle, warm layers for before and after soaking, camping gear, a trash bag to pack out what you pack in.