Skip to content
Every Hot Spring

Gregson Hot Springs

Gregson Hot Springs is a resort hot spring near Anaconda in Silver Bow County, Montana. Water at the source is recorded at 158°F (70°C), hot enough to scald.

158°F70°C recorded at the source
Scalding at the source. Do not enter without a cooled, mixed pool.

Gregson Hot Springs also known as Fairmont Hot Springs, is a geothermal hot spring system located in Silver Bow County, Montana. Over the years the mineral-rich hot spring water was thought to relieve rheumatism and arthritis among other ailments.

Facts

Coordinates
46.0440, -112.8110 (Google Maps, OSM)
Source temperature
158°F (70°C)
Access
Resort or commercial
Type
Resort
Fee
Not recorded
Clothing optional
Not recorded
Nearest town
Anaconda
State
Montana
Data sources
NOAA NCEI, Wikipedia, Wikidata, Official sources (linked below). See sources

Map

Larger marker is Gregson Hot Springs; smaller markers are other springs within 50 miles.

Quick answers

Can you soak at Gregson Hot Springs?
Gregson Hot Springs is a resort or commercial operation, so soaking is on the operator’s terms. Check the operator’s website for hours, prices and reservations.
How hot is Gregson Hot Springs?
The hottest recorded reading at the source is 158°F (70°C). That is the outlet temperature, not a pool temperature; water cools as it flows away from the source. Water this hot can cause serious burns, so test any pool by hand first.
Where is Gregson Hot Springs?
Gregson Hot Springs is near Anaconda in Silver Bow County, Montana, at coordinates 46.0440, -112.8110.
What other hot springs are near Gregson Hot Springs?
The closest listed springs, in straight-line distance, are Anaconda Hot Springs, 6 mi; Warm Springs (State Hospital), 9 mi; and Deerlodge Prison Ranch Springs, 20 mi.

Before you go

  • Temperatures are measured at the source and can be far hotter than any soaking pool. Test with a hand before stepping in.
  • Access, fees, and road conditions change. Verify with the land manager or owner; "public" here reflects survey records, not a current right of entry.
  • Water in natural springs is untreated. Keep your head above water and avoid soaking with open wounds. Some springs carry Naegleria fowleri risk.
  • Pack out everything, including soap residue. Many springs have been closed because of trash and overcrowding.

Sources

Dataset last rebuilt October 11, 2026. Not yet checked on site by a person. Access, fee, clothing and closure details appear only when a source below states them. How this data is built.

Checked against

  1. Wikipediaen.wikipedia.org/wiki/Gregson_Hot_Springs
  2. Operator website (fairmontmontana.com)

Merged from

  1. NOAA NCEI Thermal Springs List (archived 2025): survey location and source temperature, public domain
  2. Wikipedia: short description, CC BY-SA 4.0
  3. Wikidata: name, county and website, CC0