Roadside Springs, Frying Pan Spring

Also known as: Roadside Spring East (MNCNN031)
Gallatin County, Wyoming · Near West Yellowstone
44.7530°N, 110.7240°W · 7,520 ft
158°F 38°F air · Good soaking weather 7,520 ft Open Roadside National Park Service Camping nearby (9.3 mi)
Very Hot Source, Use Extreme Caution

At 158°F, the source water at Roadside Springs, Frying Pan Spring 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.

Frying Pan Spring belongs to the group filed as the Roadside Springs, and it sits right at the edge of the Grand Loop Road in Yellowstone. The water scalds, and the 2006 sample came back acidic. You pull over and there it is. Gallatin County, and the Park Service owns it. Access is open. West Yellowstone is the closest town. OpenStreetMap lists it as Roadside Spring East with a monitoring code attached.

Location

Roadside is the access class, and the record puts it under 150 feet from the Grand Loop Road. Around 7,500 feet up. The climate on record is cold, a year-round average in the mid thirties, and the snow total runs a little over eleven feet. Moderate precipitation. Yellowstone National Park throughout.

Scalding, and acidic with it, so skin and water do not mix here. Stay on the road shoulder or boardwalk. Winter is rated best on record, which in practice means the Grand Loop Road under snow, so check whether it is open. Indian Creek Campground is around nine miles away, the nearest camp on file. No fee listed.

History of Roadside Springs, Frying Pan Spring

OpenStreetMap names this point Roadside Spring East (MNCNN031), a monitoring label. The USGS holds a site record, with the water chemistry on file sampled in June 2006.

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 Roadside Springs, Frying Pan Spring.

Aerial view of the ground around Roadside Springs, Frying Pan Spring LiDAR bare-earth view of the same ground around Roadside Springs, Frying Pan Spring
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.

Setting
Hillside
The spring sits on a steep slope that climbs to the northeast.
Highest ground nearby
260 ft above the spring
Within a quarter mile, to the northeast
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.

Seen From Space

Landsat's thermal camera passed over on a clear winter day, December 3, 2022. This spring's heat shows up from about 440 miles up. The brightest yellow marks the warmest ground, roughly 10°F warmer than the land around it.

Aerial view of the ground around Roadside Springs, Frying Pan Spring Landsat thermal view of the same ground around Roadside Springs, Frying Pan Spring
Aerial Thermal

Drag to compare. The view is about 2½ miles across, and each thermal pixel covers roughly 300 feet of ground, so individual pools blur into one warm patch.

Thermal: Landsat 8/9 surface temperature, USGS (public domain), via Microsoft Planetary Computer. Aerial: USGS The National Map. More springs seen from space.

Heat Below
134 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 84% 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
30°
Apr
39°
May
50°
Jun
61°
Jul
59°
Aug
50°
Sep
34°
Oct
22°
Nov
13°
Dec
Annual Precip: 27.4 in Annual Snow: 136.7 in
Best Time to Visit
December Air 13°F · Water 158°F · +145° contrast
January Air 15°F · Water 158°F · +143° contrast
February Air 17°F · Water 158°F · +141° contrast
December offers 47°F more contrast than July
Current Conditions
38°F
S 24.9 mph 62% Good soaking weather
Today 61° Low 31° Sunny
Spring is +97° warmer
Wednesday 68° Low 37° Sunny
Spring is +90° warmer
Thursday 64° Low 37° Showers And Thunderstorms 76% precip
Spring is +94° warmer
Friday 57° Low 32° Rain Showers Likely 62% precip
Spring is +101° warmer
Saturday 60° Low 31° Chance Showers And Thunderstorms 28% precip
Spring is +98° warmer
Water Chemistry Sampled 2006-06-03

The water at Roadside Springs, Frying Pan Spring is acidic (pH 4.7).

pH 4.7 Acidic
pH influences mineral absorption through skin
Calcium 4 mg/L
May support bone density and joint health
Magnesium 1 mg/L
Known for muscle relaxation and stress relief
Sodium 4 mg/L
Supports circulation and skin hydration
Sulfate 4 mg/L
Traditionally used for skin conditions and inflammation
Chloride 1 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Indian Creek Campground (Wy) 9.3 mi away

Overview Located about eight miles (13 km) south of Mammoth Hot Springs on the road to Norris, Indian Creek Campground—elevation 7,300 feet (2225 m)—sits near the base of the Gallatin Mountains and offers breathtaking views of Electric Peak. The area offers easy access to fishing and hiking. The campground is away from the main road and provides a quieter, more primitive, experience than many other locations.  For reservations at the campgrounds managed by Yellowstone National Park Lodges (Fi...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 7,520 ft

Roadside Springs, Frying Pan Spring sits at 7,520 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 30% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
158°F
Warm Hot Boiling
Water Temp 158°F (70°C)
Avg Air Temp 35°F
Above Ambient +123°F
Great soaking conditions September
Access
Open
Road Access Roadside
Nearest Road Grand Loop Road
Distance to Road 144 ft
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 Roadside Springs, Frying Pan Spring?
Roadside Springs, Frying Pan Spring has a water temperature of 158°F (70°C). This is considered a hot spring, well above body temperature.
Where is Roadside Springs, Frying Pan Spring located?
Roadside Springs, Frying Pan Spring is located in Gallatin County, Wyoming at 7,520 feet elevation, near West Yellowstone. Coordinates: 44.7530°N, 110.7240°W.
How do I get to Roadside Springs, Frying Pan Spring?
Roadside Springs, Frying Pan Spring has Roadside road access, with the nearest road being Grand Loop Road (144 ft from the road).
Is Roadside Springs, Frying Pan Spring free to visit?
Roadside Springs, Frying Pan Spring has Open access. It is managed by National Park Service.
Can I camp near Roadside Springs, Frying Pan Spring?
Yes, Indian Creek Campground (Wy) is located nearby (9.3 miles away).
What minerals are in the water at Roadside Springs, Frying Pan Spring?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 4.7 (acidic).
Is it safe to soak at Roadside Springs, Frying Pan Spring?
No, not at the source. The water at Roadside Springs, Frying Pan Spring reaches 158°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.