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Bat Hot Spring, Pence Hot Spring

Elmore County, Idaho · Near Mountain Home Air Force Base

42.7970°N, 115.7230°W · 2,590 ft

117°F 79°F air · Good soaking weather 2,590 ft Short Walk

Researched & maintained by Armen Suny · Updated August 2026

Bat Hot Spring, also listed as Pence Hot Spring, is a hot spring in Elmore County, Idaho, right at Mountain Home Air Force Base by the distance on record, which rounds to zero. The water is hot, above the range most people soak in. Hot Springs Road runs a third of a mile away. Owner and access are not recorded.

Location

0 miles from Mountain Home Air Force Base, ID

Get Directions → All springs near Mountain Home Air Force Base →

Low desert by the numbers: ten inches of precipitation and under a foot of snow, with a warm average year. Elevation is around twenty-six hundred feet. From Hot Springs Road you finish on foot, and the distance is small. The record names no land unit and lists no campground.

Climate puts winter first here, and light snow is less of a barrier. Chemistry is from 1989, alkaline with iron present. The water is hot enough to hurt. Ease in or stay out. No fee listed. Access status is missing, and with an Air Force base this close, find out whose land it is before you go.

Monthly Climate

32°

Jan

38°

Feb

46°

Mar

54°

Apr

63°

May

73°

Jun

83°

Jul

82°

Aug

70°

Sep

55°

Oct

42°

Nov

32°

Dec

Annual Precip: 9.6 in Annual Snow: 11.4 in

Best Time to Visit

January Air 32°F · Water 117°F · +85° contrast

December Air 32°F · Water 117°F · +85° contrast

February Air 38°F · Water 117°F · +79° contrast

January offers 51°F more contrast than July

Current Conditions

79°F

Clear 28% Good soaking weather

This Afternoon 84° Low 52° Mostly Sunny

Spring is +33° warmer

Saturday 91° Low 54° Mostly Sunny then Patchy Smoke

Spring is +26° warmer

Sunday 71° Low 45° Sunny

Spring is +46° warmer

Monday 72° Low 43° Sunny

Spring is +45° warmer

Tuesday 76° Low 48° Sunny

Spring is +41° warmer

Data from National Weather Service

Water Chemistry Sampled 1989-03-08

The water at Bat Hot Spring, Pence Hot Spring is slightly alkaline (pH 8.2) with 243 mg/L total dissolved solids.

pH 8.2 Slightly Alkaline

pH influences mineral absorption through skin

Total Dissolved Solids 243 mg/L

Higher mineral concentration for therapeutic soaking

Calcium 11 mg/L

May support bone density and joint health

Magnesium 1 mg/L

Known for muscle relaxation and stress relief

Sodium 49 mg/L

Supports circulation and skin hydration

Sulfate 20 mg/L

Traditionally used for skin conditions and inflammation

Chloride 9 mg/L

Natural antiseptic with skin health benefits

Iron 50 µg/L

Iron-rich springs may support circulation

Compare with other slightly alkaline springs →

Temperature

117°F

Warm Hot Boiling

Water Temp 117°F (47°C)

Avg Air Temp 56°F

Above Ambient +61°F

Good soaking conditions September

Access

Road Access Short Walk

Nearest Road Hot Springs Road

Distance to Road 0.3 mi

Nearby

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Bruneau Hot Spring

Elmore County, Idaho · Near Mountain Home Air Force Base

106°F Roadside

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109°F Roadside

Lower Indian Bathtub Hot Springs

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Indian Bathtub Hot Springs

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Hot Springs

Elmore County, Idaho · Near Mountain Home

158°F Short Walk

Similar Temperature

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Similar Water Chemistry

Slightly Alkaline Springs (pH ~8.2)

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108°F Short Walk Open

Barney Hot Springs

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82°F Roadside Open

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74°F Roadside

Longstreet Spring

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82°F Roadside Restricted

Explore all hot springs in Idaho →

Between Soaks

Hike 6 waterfalls near Bat Hot Spring, Pence Hot Spring

Crane Falls (historical)

Looking for more outdoor adventures? Explore waterfall hikes near Bat Hot Spring, Pence Hot Spring, Idaho.

Frequently Asked Questions

What is the water temperature at Bat Hot Spring, Pence Hot Spring?

Bat Hot Spring, Pence Hot Spring has a water temperature of 117°F (47°C). This is considered a hot spring, well above body temperature.

Where is Bat Hot Spring, Pence Hot Spring located?

Bat Hot Spring, Pence Hot Spring is located in Elmore County, Idaho at 2,590 feet elevation, near Mountain Home Air Force Base. Coordinates: 42.7970°N, 115.7230°W.

How do I get to Bat Hot Spring, Pence Hot Spring?

Bat Hot Spring, Pence Hot Spring has Short Walk road access, with the nearest road being Hot Springs Road (0.3 mi from the road).

What minerals are in the water at Bat Hot Spring, Pence Hot Spring?

Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 8.2 (slightly alkaline). Total dissolved solids measure 243 mg/L.

Is it safe to soak at Bat Hot Spring, Pence Hot Spring?

With care. At 117°F Bat Hot Spring, Pence Hot Spring is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.

Sources: USGS NWIS