Rainbow Springs

Gallatin County, Wyoming · Near West Yellowstone
44.7690°N, 110.2690°W · 8,115 ft
190°F 8,115 ft Open Backcountry National Park Service Camping nearby (10.2 mi)
Very Hot Source, Use Extreme Caution

At 190°F, the source water at Rainbow Springs is hot enough to cause burns. Some hot springs this hot have cooler side pools or downstream areas suitable for soaking. Always test the water temperature before entering.

Aerial view of the ground around Rainbow Springs LiDAR bare-earth view of the same ground around Rainbow Springs
Aerial LiDAR bare earth

Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.

Rainbow Springs is a backcountry hot spring in the northeast part of Yellowstone, nearly eight miles from the Northeast Entrance Road. Scalding on record. High ground, above eight thousand feet. West Yellowstone is the town on file as nearest, though the park's northeast entrance is the road that matters. Open, Park Service land.

Location

Seven point seven miles from the Northeast Entrance Road, all of it backcountry. High elevation, so the season is short and the nights cold. Snowfall on record runs around eleven feet, and the annual average temperature barely clears freezing. Yellowstone National Park, no other designation on file.

Backcountry permits are standard in the park; ask before you go. December through February are flagged as the best months on record, which at this depth of snow means ski or snowshoe travel over many miles. The water is scalding. Tower Fall Campground is about ten miles from the spring, the nearest camp on file. Fee not listed.

Terrain

Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Rainbow Springs.

Setting
Hillside
The spring sits on a steep slope that climbs to the east.
Highest ground nearby
450 ft above the spring
Within a quarter mile, to the east
Cross-section through the spring

A slice through the ground from southwest to northeast, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
136 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 87% of the springs on this site.

Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.

Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.

Monthly Climate
13°
Jan
15°
Feb
23°
Mar
28°
Apr
36°
May
47°
Jun
58°
Jul
56°
Aug
48°
Sep
32°
Oct
20°
Nov
12°
Dec
Annual Precip: 27.4 in Annual Snow: 135.7 in
Best Time to Visit
December Air 12°F · Water 190°F · +178° contrast
January Air 13°F · Water 190°F · +177° contrast
February Air 15°F · Water 190°F · +175° contrast
December offers 46°F more contrast than July
Current Conditions
SSW 8.3 mph
Today 58° Low 31° Sunny
Spring is +132° warmer
Wednesday 64° Low 36° Sunny 2% precip
Spring is +126° warmer
Thursday 62° Low 38° Showers And Thunderstorms 76% precip
Spring is +128° warmer
Friday 55° Low 31° Rain Showers Likely 63% precip
Spring is +135° warmer
Saturday 58° Low 31° Chance Showers And Thunderstorms 32% precip
Spring is +132° warmer
Nearby Camping
Nearby Camping
Tower Fall Campground 10.2 mi away

Overview Tower Fall Campground—elevation 6,600 feet (2012 m)—is on the north side of the steep, winding, road to Dunraven Pass. The campground is near the Tower General Store and Tower Fall. The Lamar Valley, with spectacular wildlife viewing opportunities, is nearby as are several Day Hikes in the Tower and Northeast Area. Roosevelt Lodge, a short drive from the campground, offers dining and horseback riding. For reservations at the campgrounds managed by Yellowstone National Park Lodges (F...

Reservable Yes
Reserve on Recreation.gov →
High Altitude Advisory 8,115 ft

At 8,115 feet, Rainbow Springs is in high-altitude territory where the air is noticeably thinner. Soaking in hot water accelerates dehydration and can amplify altitude effects like headache and fatigue. UV radiation is roughly 32% stronger here. Wear sunscreen even on overcast days and take breaks from the water to rehydrate.

As an Amazon Associate, we earn from qualifying purchases.

Temperature
190°F
Warm Hot Boiling
Water Temp 190°F (88°C)
Avg Air Temp 33°F
Above Ambient +158°F
Great soaking conditions September
Access
Open
Road Access Backcountry
Nearest Road Northeast Entrance Road
Distance to Road 7.7 mi
Land
Ownership Federal
Agency National Park Service
Designation National Park
Unit Yellowstone National Park
Manager National Park Service
Protection 1 - Permanent protection, natural state
Frequently Asked Questions
What is the water temperature at Rainbow Springs?
Rainbow Springs has a water temperature of 190°F (88°C). This is considered a hot spring, well above body temperature.
Where is Rainbow Springs located?
Rainbow Springs is located in Gallatin County, Wyoming at 8,115 feet elevation, near West Yellowstone. Coordinates: 44.7690°N, 110.2690°W.
How do I get to Rainbow Springs?
Rainbow Springs has Backcountry road access, with the nearest road being Northeast Entrance Road (7.7 mi from the road).
Is Rainbow Springs free to visit?
Rainbow Springs has Open access. It is managed by National Park Service.
Can I camp near Rainbow Springs?
Yes, Tower Fall Campground is located nearby (10.2 miles away).
Is it safe to soak at Rainbow Springs?
No, not at the source. The water at Rainbow Springs reaches 190°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.