Apex Warm Spring

Beaverhead County County, Montana · Near Dillon
45.4200°N, 112.6920°W · 5,255 ft
77°F 5,255 ft Short Walk Camping nearby (7.9 mi)

Apex Warm Spring emerges at 77°F in Beaverhead County, Montana, at 5,255 feet elevation near Dillon. The spring sits 337 feet from School House Road, requiring a short walk. No recent USGS chemistry or pH data are available, leaving the water's mineral profile undocumented beyond temperature. The water runs 35 degrees above the local 42°F annual average.

The spring surfaces in the semi-arid foothills of southwestern Montana's Pioneer and Beaverhead mountain country. Sagebrush and bunchgrass dominate the rolling terrain at this elevation, with scattered junipers on drier slopes and cottonwoods along creek bottoms. Annual precipitation is low at 16.4 inches, and snowfall averages 51 inches. The Beaverhead River valley lies nearby, and the landscape transitions from broad ranch valleys to timbered mountain slopes within a few miles.

History of Apex Warm Spring

Beaverhead County was one of Montana's original nine counties, established in 1865 during the gold rush era. The spring's name suggests a geographic or survey marker designation rather than a personal name. Dillon, the county seat, grew as a ranching and railroad town in the 1880s. Historical records for this particular spring are limited, and no commercial development has been documented.

Visit from late spring through early fall for reliable road conditions. The 337-foot walk to the spring is across open rangeland. Birch Creek Cabin, a historic log cabin with electricity located 13 km away, is reservable and typically accessible by passenger car in summer. Dillon provides full services including gas, food, and lodging along Interstate 15. Bring water, as the area is dry.

Is Apex Warm Spring worth visiting?

Best for

  • Overnight camping trips
Apex Warm Spring is well suited for overnight camping trips.
Monthly Climate
19°
Jan
21°
Feb
31°
Mar
39°
Apr
49°
May
59°
Jun
69°
Jul
68°
Aug
57°
Sep
42°
Oct
29°
Nov
17°
Dec
Annual Precip: 16.4 in Annual Snow: 51.1 in
Best Time to Visit
December Air 17°F · Water 77°F · +60° contrast
January Air 19°F · Water 77°F · +58° contrast
February Air 21°F · Water 77°F · +57° contrast
December offers 52°F more contrast than July
Nearby Camping
Birch Creek Cabin 7.9 mi away

Overview Birch Creek Cabin is a historic log cabin with electricity. It provides access to a variety of hiking, ohv, and for cross-country skiing and snowshoe trails (depending on the season). A vaulted toilet lies 100' west of the cabin. Guests can typically access the cabin by vehicle, depending on conditions. The roads leading to the cabin are gravel - but suitable for passenger cars (depending on the season and snow levels). The final quarter-mile may be covered with impassible snow d...

Reservable Yes
Reserve on Recreation.gov →
What to Bring
Swimsuit & towel
Water bottle Stay hydrated, especially in hot water
Warm layers Cold air before and after soaking
Camping gear Nearby camping at Birch Creek Cabin
Trash bag Pack out what you pack in
References
USGS Quad: GLEN 7.5 · PP 492: 27.0 · NOAA: 5.0 · AMS Map: DILLON
Frequently Asked Questions
What is the water temperature at Apex Warm Spring?
Apex Warm Spring has a water temperature of 77°F (25°C). This is a warm thermal spring.
Where is Apex Warm Spring located?
Apex Warm Spring is located in Beaverhead County, Montana at 5,255 feet elevation, near Dillon. Coordinates: 45.4200°N, 112.6920°W.
How do I get to Apex Warm Spring?
Apex Warm Spring has Short Walk road access, with the nearest road being School House Road (0.2 mi from the road).
Can I camp near Apex Warm Spring?
Yes, Birch Creek Cabin is located nearby (7.9 miles away).
Is it safe to soak at Apex Warm Spring?
Apex Warm Spring is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Apex Warm Spring crowded?
Apex Warm Spring sees varying levels of visitors depending on the season and day of the week.
What should I bring to Apex Warm Spring?
Essentials for Apex Warm Spring: swimsuit, towel, water bottle, warm layers for before and after soaking, camping gear, a trash bag to pack out what you pack in.
Temperature
77°F
Warm Hot Boiling
Water Temp 77°F (25°C)
Avg Air Temp 42°F
Above Ambient +35°F
Good soaking conditions March
Access
Road Access Short Walk
Nearest Road School House Road
Distance to Road 0.2 mi