Vermilion Springs

Gallatin County, Wyoming · Near West Yellowstone
44.5820°N, 110.3140°W · 7,815 ft
140°F 28°F air · Good soaking weather 7,815 ft Open Hike National Park Service Camping nearby (18.8 mi)
Very Hot Source, Use Extreme Caution

At 140°F, the source water at Vermilion 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 Vermilion Springs LiDAR bare-earth view of the same ground around Vermilion 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.

Vermilion Springs is a backcountry hot spring in Yellowstone National Park, Gallatin County, West Yellowstone being the nearest town some 23 miles off. The water comes out hot, right at the line where touching it stops being a good idea. No road runs close. You walk in a mile and a half from the nearest one, and the record does not name that road. Open to the public under the National Park Service. There is no photo of it on file.

Location

Around 7,800 feet, high enough that the average year barely clears freezing. Twelve feet of snow falls in an ordinary winter, with a fair amount of rain on top of that. The approach is a hike from the closest road, and nothing on file says which road that is. All of it is National Park Service ground, designated national park.

On file, the best months run December through February, though the snow those months bring turns a mile-and-a-half walk into a different proposition than in summer, so plan for conditions. Threemile Campground, about 19 miles distant, is the nearest camping recorded. The reading is in scalding territory. Test nothing with bare skin. No water chemistry is on record and no fee is 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 Vermilion Springs.

Setting
Valley floor
Gentle slopes rise on both sides.
Highest ground nearby
149 ft above the spring
Within a quarter mile, to the north
Cross-section through the spring

A slice through the ground from north to south, about 0.6 miles end to end.

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

Heat Below
87 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 26% 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
15°
Jan
17°
Feb
25°
Mar
29°
Apr
37°
May
48°
Jun
59°
Jul
58°
Aug
50°
Sep
35°
Oct
25°
Nov
15°
Dec
Annual Precip: 26.9 in Annual Snow: 144.0 in
Best Time to Visit
January Air 15°F · Water 140°F · +125° contrast
December Air 15°F · Water 140°F · +125° contrast
February Air 17°F · Water 140°F · +123° contrast
January offers 44°F more contrast than July
Current Conditions
28°F
N 0.0 mph 85% Good soaking weather
Today 61° Low 32° Sunny
Spring is +79° warmer
Wednesday 67° Low 36° Sunny 2% precip
Spring is +73° warmer
Thursday 64° Low 37° Showers And Thunderstorms 79% precip
Spring is +76° warmer
Friday 57° Low 31° Rain Showers Likely 62% precip
Spring is +83° warmer
Saturday 59° Low 31° Chance Showers And Thunderstorms 31% precip
Spring is +81° warmer
Where to Stay

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Nearby Camping
Threemile Campground 18.8 mi away

Overview Threemile Campground is located just three miles from the east entrance of Yellowstone National Park, and 50 miles from the full service gateway community of Cody, in northwestern Wyoming. The area is an ideal destination for a family getaway, with many opportunities for outdoor recreation. Hard-sided camp trailers and RVs are required.Recreation Great opportunities for hiking, fishing, scenic driving and wildlife viewing are available around the campground. The North Fork of the Sho...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 7,815 ft

Vermilion Springs sits at 7,815 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 31% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
140°F
Warm Hot Boiling
Water Temp 140°F (60°C)
Avg Air Temp 34°F
Above Ambient +106°F
Great soaking conditions September
Access
Open
Road Access Hike
Distance to Road 1.5 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 Vermilion Springs?
Vermilion Springs has a water temperature of 140°F (60°C). This is considered a hot spring, well above body temperature.
Where is Vermilion Springs located?
Vermilion Springs is located in Gallatin County, Wyoming at 7,815 feet elevation, near West Yellowstone. Coordinates: 44.5820°N, 110.3140°W.
How do I get to Vermilion Springs?
Vermilion Springs has Hike road access (1.5 mi from the road).
Is Vermilion Springs free to visit?
Vermilion Springs has Open access. It is managed by National Park Service.
Can I camp near Vermilion Springs?
Yes, Threemile Campground is located nearby (18.8 miles away).
Is it safe to soak at Vermilion Springs?
With care. At 140°F Vermilion Springs is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.