Water Temperature of the Boiling River Hot Springs in Yellowstone National Park, WY

Current Water Temperature

115.0°F

Measurement Time: Wednesday, May 27, 2026, 2:15 PM MDT

Temperature Locations

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Local Points of Interest

Gardner River; Mammoth Hot Springs; Cody, WY

Boiling River Hot Springs

Station Name: Boiling River at Mammoth,YNP
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 5,686 feet

Nearest Address:
N Entrance Rd
Yellowstone National Park, WY 82190
Park County

GPS Coordinates: 44.9851333, -110.6893444

Nearby Water Temperatures

Yellowstone River, Corwin Springs, MT (10.1 mi)
Lamar River, Yellowstone National Park, WY (15 mi)
Tantalus Creek, Yellowstone National Park, WY (17.5 mi)
Gibbon River, Yellowstone National Park, WY (25.2 mi)
Firehole River, Yellowstone National Park, WY (26.6 mi)
Madison River, West Yellowstone, MT (29.3 mi)
Madison River, Grayling, MT (32.8 mi)
Firehole River, Yellowstone National Park, WY (36.9 mi)
Madison River, Cameron, MT (44.1 mi)
West Rosebud Creek, Roscoe, MT (51.7 mi)
Madison River, Ennis, MT (54.6 mi)
Madison River, Norris, MT (57.7 mi)
Snake River, Flagg Ranch, WY (61.2 mi)
Jefferson River, Three Forks, MT (76.8 mi)
Snake River, Moran, WY (78 mi)

Weather for Yellowstone National Park, Wyoming

Current Weather

50.1°F
Patchy rain nearby
Patchy rain nearby
48.9°F
50.1°F
72%
ESE 3.1 mph
6.6 mph
48.9°F
40.8°F
0 in
80%
6 mi
1010 mbar
0.1

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 76°F
L: 36°F
Partly Cloudy
Thu
H: 80°F
L: 38°F
Patchy rain nearby
Fri
H: 78°F
L: 38°F
Moderate rain
Sat
H: 52°F
L: 40°F
Moderate rain
Sun
H: 46°F
L: 31°F

Air Quality

AQI: 1 - Good
PM2.5: 3.75 μg/m3
PM10: 5.85 μg/m3
Carbon Monoxide: 117.85 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:20 PM
Sunset: 8:58 PM
Daylight: 15 hrs 16 mins
Moonrise: 5:47 PM
Moon Transit: 10:52 PM
Moonset: 3:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

7:10 AM - 9:40 AM
12:00 AM - 12:00 AM

Minor Periods

5:17 PM - 6:47 PM
2:59 AM - 4:29 AM

Action Rating: 2 out of 5

Special Weather Statement issued May 27 at 4:57PM MDT by NWS Great Falls MT

Effective: Wed May 27, 2026, 4:57 PM
Expires: Wed May 27, 2026, 7:00 PM

Isolated to widely scattered thunderstorms have developed over the higher terrain of Southwest, Central, and North Central Montana; with the primary hazards from these storms being gusty winds and localized heavy rainfall. Wind gusts beneath the strongest thunderstorms will mainly range from 35 to 45 mph, most notably across Southwest Montana. Heavy rainfall with hourly rates of between 0.25" to 0.75" are also possible with the stronger storms, which may lead to localized rises on creeks and streams.


Wednesday, May 27, 2026

Weather Forecast

Patchy rain nearby
75.9°F
36.1°F
54.8°F
60%
0.04 in
89%
0%
14.5 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 4.75 μg/m3
PM10: 7.26 μg/m3
Carbon Monoxide: 118.33 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 86.4 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:20 PM
Sunset: 8:58 PM
Daylight: 15 hrs 16 mins
Moonrise: 5:47 PM
Moon Transit: 10:52 PM
Moonset: 3:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

7:10 AM - 9:40 AM
12:00 AM - 12:00 AM

Minor Periods

5:17 PM - 6:47 PM
2:59 AM - 4:29 AM

Action Rating: 2 out of 5

Thursday, May 28, 2026

Weather Forecast

Partly Cloudy
79.9°F
37.9°F
58.4°F
50%
0 in
0%
0%
8.1 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 3.67 μg/m3
PM10: 7.15 μg/m3
Carbon Monoxide: 117.81 μg/m3
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 93.08 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:20 PM
Sunset: 8:59 PM
Daylight: 15 hrs 17 mins
Moonrise: 6:55 PM
Moon Transit: 11:37 PM
Moonset: 3:49 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

7:54 AM - 10:24 AM
12:00 AM - 12:00 AM

Minor Periods

6:25 PM - 7:55 PM
3:19 AM - 4:49 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Patchy rain nearby
77.5°F
37.9°F
57.2°F
42%
0.04 in
86%
0%
14.3 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 4.13 μg/m3
PM10: 8.82 μg/m3
Carbon Monoxide: 114.27 μg/m3
Nitrogen Dioxide: 2.71 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 92.76 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:20 PM
Sunset: 9:00 PM
Daylight: 15 hrs 19 mins
Moonrise: 8:01 PM
Moon Transit: 12:00 AM
Moonset: 4:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:40 AM - 11:10 AM

Minor Periods

7:31 PM - 9:01 PM
3:43 AM - 5:13 AM

Action Rating: 4 out of 5

Saturday, May 30, 2026

Weather Forecast

Moderate rain
51.9°F
39.5°F
46.6°F
87%
0.48 in
81%
0%
5.1 mph
2.9


Air Quality

AQI: 1 - Good
PM2.5: 4.88 μg/m3
PM10: 10.12 μg/m3
Carbon Monoxide: 113.61 μg/m3
Nitrogen Dioxide: 2.15 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 93.4 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:20 PM
Sunset: 9:01 PM
Daylight: 15 hrs 21 mins
Moonrise: 9:06 PM
Moon Transit: 12:24 AM
Moonset: 4:43 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:27 AM - 11:57 AM

Minor Periods

8:36 PM - 10:06 PM
4:13 AM - 5:43 AM

Action Rating: 5 out of 5

Sunday, May 31, 2026

Weather Forecast

Moderate rain
46.4°F
31°F
43.5°F
93%
0.31 in
89%
0%
8.3 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 1.86 μg/m3
PM10: 2.67 μg/m3
Carbon Monoxide: 113.23 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 91.85 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:20 PM
Sunset: 9:02 PM
Daylight: 15 hrs 22 mins
Moonrise: 10:05 PM
Moon Transit: 1:14 AM
Moonset: 5:19 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
10:18 AM - 12:48 AM

Minor Periods

9:35 PM - 11:05 PM
4:49 AM - 6:19 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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