# Ashton Warm Spring, Idaho

Ashton Warm Spring in Idaho. 79°F (26°C). Short Walk. Fremont County.

- Page: https://www.soakingsprings.com/hot-springs/idaho/ashton-warm-spring
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Ashton Warm Spring?

The water leaves the ground at 79°F, about as warm as a heated pool. It's a short walk from the road. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 79°F (26°C) (USGS record; developed pools are often cooled) |
| pH | 7.9 (Slightly Alkaline) |
| Elevation | 5,201 ft |
| Access | Short Walk, 0.1 mi from the nearest road (Idaho Medal of Honor Highway) |
| County | Fremont County |
| Nearest town | Ashton |
| Coordinates | 44.09100, -111.45800 |
| Best months to soak | December, January, February (largest gap between water and average air temperature) |
| Nearest campground | WARM RIVER, 7.5 mi |

## About Ashton Warm Spring

Ashton Warm Spring lies a mile or so outside Ashton in Fremont County, Idaho, a short walk off the Idaho Medal of Honor Highway. The water runs warm, under body temperature, with a near-neutral pH and iron among the minerals from a 1977 sample. Ownership is not recorded. Neither is public access.

Around five thousand feet, snowy, with five feet or so of snow through a winter and cold average temperatures. A tenth of a mile from the highway. The nearest campground on record is Warm River, about seven and a half miles off. No land unit is on file.

Winter takes the top spot in the season ranking. Expect snow on the ground. Warm River Campground is the camping option listed. Water chemistry is nearly fifty years old, so take the mineral line as historical. Nobody has recorded an access status, and the spring is near town, so check locally.

## Water chemistry

Lab sample from 1977-09-06 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 7.9 |
| Calcium | 1.4 mg/L |
| Magnesium | 0.1 mg/L |
| Sodium | 37 mg/L |
| Sulfate | 3.9 mg/L |
| Chloride | 3.3 mg/L |
| Iron | 40 µg/L |

## Nearby

- Nearest city page: [Hot springs near Ashton](https://www.soakingsprings.com/hot-springs/near/idaho/ashton), 0 mi away
- State page: [Hot springs in Idaho](https://www.soakingsprings.com/hot-springs/idaho)
- [Pincock (Green Canyon) Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/pincock-green-canyon-hot-springs): 111°F source, pH 6.7, Short Walk, near Ashton, Fremont County, developed pools, pools 96–105°F, year-round
- [Boundary Creek Hot Springs, WY](https://www.soakingsprings.com/hot-springs/wyoming/boundary-creek-hot-springs): 181°F source, Hike, near West Yellowstone, Gallatin County
- [Elkhorn Warm Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/elkhorn-warm-spring): 72°F source, Short Walk, near Rexburg, Madison County
- [Heise Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/heise-hot-springs): 120°F source, pH 6.4, Roadside, near Rexburg, Madison County, developed pools, pools 96–104°F
- [Taylor Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/taylor-springs): 68°F source, pH 7.7, Roadside, near Victor, Teton County
- [Jackson Lake Hot Springs, WY](https://www.soakingsprings.com/hot-springs/wyoming/jackson-lake-hot-springs): 162°F source, Hike, near Moose Wilson Road, Teton County

## Questions

**What is the water temperature at Ashton Warm Spring?**
Ashton Warm Spring has a water temperature of 79°F (26°C). This is a warm thermal spring.

**Where is Ashton Warm Spring located?**
Ashton Warm Spring is located in Fremont County, Idaho at 5,201 feet elevation, near Ashton. Coordinates: 44.0910°N, 111.4580°W.

**How do I get to Ashton Warm Spring?**
Ashton Warm Spring has Short Walk road access, with the nearest road being Idaho Medal of Honor Highway (0.1 mi from the road).

**Can I camp near Ashton Warm Spring?**
Yes, Warm River is located nearby (7.5 miles away).

**What minerals are in the water at Ashton Warm Spring?**
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 7.9 (slightly alkaline).

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals