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

Current Water Temperature

118.0°F

Measurement Time: Wednesday, July 15, 2026, 3:15 AM 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

75.3°F
Partly Cloudy
Partly Cloudy
66°F
77.3°F
47%
WNW 3.8 mph
4.4 mph
75.3°F
53.9°F
0 in
47%
6 mi
1016 mbar
4.4

Five Day Weather Forecast

Partly Cloudy
Wed
H: 83°F
L: 46°F
Partly Cloudy
Thu
H: 90°F
L: 45°F
Sunny
Fri
H: 89°F
L: 48°F
Sunny
Sat
H: 90°F
L: 47°F
Sunny
Sun
H: 88°F
L: 48°F

Air Quality

AQI: 1 - Good
PM2.5: 4.8 μg/m3
PM10: 6.2 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 90 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:28 PM
Sunset: 9:06 PM
Daylight: 15 hrs 16 mins
Moonrise: 7:13 AM
Moon Transit: 2:54 PM
Moonset: 10:18 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:24 PM - 4:54 PM

Minor Periods

9:48 PM - 11:18 PM
6:43 AM - 8:13 AM

Action Rating: 3 out of 5

Flood Watch issued July 14 at 2:06PM MDT until July 16 at 3:00AM MDT by NWS Billings MT

Effective: Tue July 14, 2026, 2:06 PM
Expires: Wed July 15, 2026, 2:15 PM

* WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. The risk is greatest for recent area burn scars including the Robertson Draw and East Side Fires in Montana, and the Elk Fire in Wyoming. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Big Horn, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From Wednesday afternoon through late Wednesday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms capable of producing very heavy rainfall rates. - http://www.weather.gov/safety/flood

Continue to monitor the latest forecast.


Flood Watch issued July 15 at 1:57AM MDT until July 16 at 3:00AM MDT by NWS Billings MT

Effective: Wed July 15, 2026, 1:57 AM
Expires: Thu July 16, 2026, 2:00 AM

* WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. The risk is greatest for recent area burn scars including the Robertson Draw and East Side Fires in Montana, and the Elk Fire in Wyoming. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Big Horn, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From noon MDT today through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms capable of producing very heavy rainfall rates. - http://www.weather.gov/safety/flood

Continue to monitor the latest forecast.
Wednesday, July 15, 2026

Weather Forecast

Partly Cloudy
82.9°F
46°F
65.2°F
60%
0.05 in
57%
0%
10.5 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 5.28 μg/m3
PM10: 7 μg/m3
Carbon Monoxide: 102.96 μg/m3
Nitrogen Dioxide: 4.2 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 80.33 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:28 PM
Sunset: 9:06 PM
Daylight: 15 hrs 16 mins
Moonrise: 7:13 AM
Moon Transit: 2:54 PM
Moonset: 10:18 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:24 PM - 4:54 PM

Minor Periods

9:48 PM - 11:18 PM
6:43 AM - 8:13 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Partly Cloudy
90°F
45.3°F
64.9°F
66%
0.21 in
61%
0%
13.2 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 3.53 μg/m3
PM10: 4.75 μg/m3
Carbon Monoxide: 98.5 μg/m3
Nitrogen Dioxide: 4.3 μg/m3
Sulphur Dioxide: 0.12 μg/m3
Ozone: 73.25 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:28 PM
Sunset: 9:06 PM
Daylight: 15 hrs 14 mins
Moonrise: 8:36 AM
Moon Transit: 3:46 PM
Moonset: 10:42 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:16 PM - 5:46 PM

Minor Periods

10:12 PM - 11:42 PM
8:06 AM - 9:36 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
88.9°F
48.2°F
67.4°F
63%
0.3 in
62%
0%
8.7 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 2.75 μg/m3
PM10: 3.61 μg/m3
Carbon Monoxide: 95.71 μg/m3
Nitrogen Dioxide: 3.84 μg/m3
Sulphur Dioxide: 0.17 μg/m3
Ozone: 71.46 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:29 PM
Sunset: 9:05 PM
Daylight: 15 hrs 12 mins
Moonrise: 9:54 AM
Moon Transit: 4:35 PM
Moonset: 11:02 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:50 AM - 3:20 AM
4:05 PM - 6:35 PM

Minor Periods

12:00 AM - 12:00 AM
9:24 AM - 10:54 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
90.3°F
46.8°F
67°F
62%
0.12 in
57%
0%
7.2 mph
11.2


Air Quality

AQI: 1 - Good
PM2.5: 2.67 μg/m3
PM10: 3.41 μg/m3
Carbon Monoxide: 96.83 μg/m3
Nitrogen Dioxide: 3.68 μg/m3
Sulphur Dioxide: 0.15 μg/m3
Ozone: 75.88 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:29 PM
Sunset: 9:04 PM
Daylight: 15 hrs 11 mins
Moonrise: 11:07 AM
Moon Transit: 5:20 PM
Moonset: 12:02 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

1:37 AM - 4:07 AM
4:50 PM - 7:20 PM

Minor Periods

10:37 AM - 12:07 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
88.1°F
47.7°F
67.2°F
54%
0 in
3%
0%
9.6 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 2.47 μg/m3
PM10: 2.96 μg/m3
Carbon Monoxide: 107.43 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 54 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:29 PM
Sunset: 9:03 PM
Daylight: 15 hrs 9 mins
Moonrise: 12:18 AM
Moon Transit: 6:04 PM
Moonset: 12:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

2:21 AM - 4:51 AM
5:34 PM - 8:04 PM

Minor Periods

11:48 AM - 1:18 PM
12:00 AM - 12:00 AM

Action Rating: 2 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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