Phifer Warm Spring
Seasonal
Warm spring rinse-off stop: shower stall and bathtub, no poolOpen seasons
- Access
- Roadside
- Accommodations
- Campsites all around the spring itself, plus National Forest campsites nearby
Phifer Warm Spring — also known as Weatherby Mill — is one of the Atlanta area’s oddities: an 86°F warm spring with no soaking pool at all. Instead, the water is piped into a stand-up shower stall and an old bathtub, making this a rinse-off stop rather than a soak — best enjoyed on a hot summer day, when the lukewarm water is a feature instead of a bug.
The Setup
No pool: a wood-walled shower stall (three sides) and a bathtub, fed by the spring. The water is clear with no odor noticed. Come in hunting season and you may share the area with a crowd of hunters and ORVs; most of the year it sees moderate use.
Seasonal Notes
The best access road has a seasonal Forest Service closure; year-round access is available via the Middle Fork Boise River Road off Highway 21.
Camping
Plenty of National Forest campsites and camping areas are available nearby, with campsites all around the spring itself.
Phifer Warm Spring Soak Stats
- Access Type: Roadside
- Public Land: Boise National Forest
- Elevation: 4,400 ft
- GPS: 43.823, -115.327
- Water Temperature: 86°F (warm spring)
- Water Clarity: Clear
- Visibility: Moderate
- Odor(s): None noticed
- Nearest Town: Atlanta area
- Wildlife: Deer, elk
- Usage Level: Moderate
Frequently Asked Questions
Is there a pool to soak in?
No pool at all: the spring water is piped into a wood-walled, three-sided shower stall and an old bathtub. This is a rinse-off stop, not a soak.
How hot is the water?
86°F as listed, a warm spring rather than a hot one. On a hot summer day, the lukewarm water is the whole point.
What else is it called?
Phifer is also known as Weatherby Mill, a name pairing the USGS maps for this stretch of the Phifer Creek drainage.
When is it busiest?
Hunting season can bring a crowd of hunters and ORVs; the rest of the year it sees moderate use.
Can I camp nearby?
Yes: campsites surround the spring itself, and National Forest camping areas are plentiful nearby.
When can you visit?
The Middle Fork Boise River Road from Highway 21 gives year-round access; the shorter best road closes seasonally.
Discover more from IdahoHotSprings.com
Subscribe to get the latest posts sent to your email.
Join the Community on Facebook
Stay updated on seasonal road closures, wildfire impacts, soaking conditions and community preservation efforts across Idaho.
Follow Idaho Hot Springs on Facebook
