Whitmore Hot Springs

Mono County, California · Near Mammoth Lakes
37.6300°N, 118.8080°W · 6,970 ft
95°F 37°F air · Good soaking weather 6,970 ft Open Short Walk CITY Camping nearby (4.7 mi)

Whitmore Hot Springs, ten miles out of Mammoth Lakes in Mono County, is on land owned by the City of Los Angeles through its Department of Water and Power, and the record marks it open. On file the water reads 95 degrees, a gentle soaking warmth. The USGS has a site here and sampled the water in 1997.

Location

Reaching it means a short walk, roughly a quarter mile, from a road the record never names, at nearly seven thousand feet. Winters are snowbound, seven feet of snow being normal, and mean temperatures stay in the forties. McGee Creek campground is under five miles away. The 1997 sample came up alkaline with chloride noted.

The best-months note says winter, and with this much snow that means snow travel or a plowed road, and the record is silent on plowing. Camp at McGee Creek. No fee is noted. Access is open. Mammoth Lakes has services ten miles off, and the chemistry has not been re-checked since the nineties as far as the record shows.

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 Whitmore Hot Springs.

Aerial view of the ground around Whitmore Hot Springs LiDAR bare-earth view of the same ground around Whitmore Hot Springs
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
Open ground
Flat, open ground all around.
Highest ground nearby
19 ft above the spring
Within a quarter mile, to the west
Cross-section through the spring

A slice through the ground from west to east, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
142 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 90% 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
30°
Jan
29°
Feb
34°
Mar
41°
Apr
48°
May
61°
Jun
68°
Jul
67°
Aug
61°
Sep
50°
Oct
39°
Nov
29°
Dec
Annual Precip: 16.2 in Annual Snow: 83.6 in
Best Time to Visit
February Air 29°F · Water 95°F · +66° contrast
December Air 29°F · Water 95°F · +66° contrast
January Air 30°F · Water 95°F · +65° contrast
February offers 39°F more contrast than July
Current Conditions
37°F
Clear WNW 25.0 mph 48% Good soaking weather
Tuesday 78° Low 40° Sunny
Spring is +17° warmer
Wednesday 75° Low 38° Sunny
Spring is +20° warmer
Thursday 74° Low 36° Sunny
Spring is +21° warmer
Friday 74° Low 37° Sunny
Spring is +21° warmer
Saturday 76° Low 39° Sunny 1% precip
Spring is +19° warmer
Water Chemistry Sampled 1997-10-22

The water at Whitmore Hot Springs is alkaline (pH 8.7). It is notably rich in chloride (natural antiseptic with skin health benefits).

pH 8.7 Alkaline
pH influences mineral absorption through skin
Chloride 183 mg/L
Natural antiseptic with skin health benefits
Where to Stay

Some links are affiliate links. We may earn a commission at no extra cost to you.

Nearby Camping
Mcgee Creek 4.7 mi away

Overview McGee Campground provides a pleasant, sunny location for family camping between Bishop and Mammoth Lakes in the eastern Sierra Nevada Mountains. The campground's proximity to U.S. Highway 395 and the adjacent John Muir Wilderness make it a hot spot for hiking, rock climbing, fishing, wildlife viewing, horseback riding, hunting, photography and geology study.Recreation Majestic scenery and challenging trails draw in hikers, mountain bikers and equestrian enthusiasts. The McGee Creek...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 6,970 ft

Whitmore Hot Springs sits at 6,970 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 28% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

As an Amazon Associate, we earn from qualifying purchases.

Temperature
95°F
Warm Hot Boiling
Water Temp 95°F (35°C)
Avg Air Temp 47°F
Above Ambient +49°F
Good soaking conditions September
Access
Open
Road Access Short Walk
Distance to Road 0.2 mi
Land
Ownership Local
Agency CITY
Designation LOTH
Unit Los Angeles Department of Water and Power
Manager CITY
Protection 4 - No known protection
Frequently Asked Questions
What is the water temperature at Whitmore Hot Springs?
Whitmore Hot Springs has a water temperature of 95°F (35°C). This is a warm thermal spring.
Where is Whitmore Hot Springs located?
Whitmore Hot Springs is located in Mono County, California at 6,970 feet elevation, near Mammoth Lakes. Coordinates: 37.6300°N, 118.8080°W.
How do I get to Whitmore Hot Springs?
Whitmore Hot Springs has Short Walk road access (0.2 mi from the road).
Is Whitmore Hot Springs free to visit?
Whitmore Hot Springs has Open access. It is managed by CITY.
Can I camp near Whitmore Hot Springs?
Yes, Mcgee Creek is located nearby (4.7 miles away).
What minerals are in the water at Whitmore Hot Springs?
Water chemistry analysis shows the presence of pH, Chloride. The pH is 8.7 (alkaline).
Sources: USGS NWIS