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

Current Water Temperature

128.7°F

Measurement Time: Friday, July 31, 2026, 9:15 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

89.3°F

Conditions: Sunny

Feels Like: 81.9°F

Heat Index: 85.3°F

Humidity: 13%

Wind: W 6.7 mph

Wind Gusts: 7.7 mph

Wind Chill: 89.3°F

Dew Point: 31.6°F

Precipitation: 0 in

Cloud Cover: 19%

Visibility: 6 mi

Air Pressure: 1015 mbar

UV Index: 7.5

Five Day Weather Forecast

Fri
H: 89°F
L: 45°F

Sat
H: 92°F
L: 47°F

Sun
H: 89°F
L: 46°F

Mon
H: 79°F
L: 35°F

Tue
H: 77°F
L: 29°F

Air Quality

AQI: 1 - Good

PM2.5: 10.7 μg/m3

PM10: 12.6 μg/m3

Carbon Monoxide: 140 μg/m3
Nitrogen Dioxide: 0.2 μg/m3
Sulphur Dioxide: 4.9 μg/m3
Ozone: 121 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:29 PM
Sunset: 8:51 PM
Daylight: 14 hrs 43 mins

Moonrise: 9:54 PM
Moon Transit: 2:48 AM
Moonset: 8:12 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:18 AM - 4:48 AM
11:49 AM - 2:19 PM

Minor Periods

9:24 PM - 10:54 PM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Heat Advisory issued July 31 at 12:49AM MDT until August 2 at 10:00PM MDT by NWS Riverton WY

Effective: Fri July 31, 2026, 12:49 AM
Expires: Fri July 31, 2026, 6:15 PM

* WHAT...Very hot temperatures expected this weekend. Highs from 98 to 105 below 5500 feet, 90 to 98 above 5500 feet. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...From noon Saturday to 10 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Some locations will not see temperatures fall below 90 degrees until sunset.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to late evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Heat Advisory issued July 31 at 9:58AM MDT until August 2 at 10:00PM MDT by NWS Riverton WY

Effective: Fri July 31, 2026, 9:58 AM
Expires: Sat August 1, 2026, 7:00 AM

* WHAT...Very hot temperatures expected this weekend. Highs from 98 to 105 below 5500 feet, 90 to 98 above 5500 feet. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...From noon Saturday to 10 PM MDT Sunday. * IMPACTS...Heat related illnesses increase during extreme heat events. * ADDITIONAL DETAILS...Some locations will not see temperatures fall below 90 degrees until sunset.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Friday, July 31, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 89.4°F

Low Temperature: 44.8°F

Average Temperature: 67.5°F

Average Humidity: 31%

Precipitation: 0 in

Chance of Rain: 2%

Chance of Snow: 0%

Maximum Wind: 7.8 mph

UV Index: 8.9

Air Quality

AQI: 1 - Good

PM2.5: 13.86 μg/m3

PM10: 15.16 μg/m3

Carbon Monoxide: 148 μg/m3
Nitrogen Dioxide: 4.28 μg/m3
Sulphur Dioxide: 4.58 μg/m3
Ozone: 97.92 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:29 PM
Sunset: 8:51 PM
Daylight: 14 hrs 43 mins

Moonrise: 9:54 PM
Moon Transit: 2:48 AM
Moonset: 8:12 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:18 AM - 4:48 AM
11:49 AM - 2:19 PM

Minor Periods

9:24 PM - 10:54 PM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 91.6°F

Low Temperature: 46.8°F

Average Temperature: 69.1°F

Average Humidity: 27%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 16.3 mph

UV Index: 9.9

Air Quality

AQI: 1 - Good

PM2.5: 8.64 μg/m3

PM10: 10.96 μg/m3

Carbon Monoxide: 128.67 μg/m3
Nitrogen Dioxide: 4.2 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 94.63 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:29 PM
Sunset: 8:49 PM
Daylight: 14 hrs 41 mins

Moonrise: 10:12 PM
Moon Transit: 3:31 AM
Moonset: 9:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:01 AM - 5:31 AM
12:00 AM - 12:00 AM

Minor Periods

9:42 PM - 11:12 PM
8:51 AM - 10:21 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 88.5°F

Low Temperature: 46.2°F

Average Temperature: 67.1°F

Average Humidity: 20%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 17.9 mph

UV Index: 9.5

Air Quality

AQI: 1 - Good

PM2.5: 7.67 μg/m3

PM10: 15.2 μg/m3

Carbon Monoxide: 131.29 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 96.79 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:29 PM
Sunset: 8:48 PM
Daylight: 14 hrs 38 mins

Moonrise: 10:30 PM
Moon Transit: 4:50 PM
Moonset: 10:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

4:20 PM - 6:50 PM
4:20 PM - 6:50 PM

Minor Periods

10:00 PM - 11:30 PM
10:00 AM - 11:30 AM

Action Rating: 2 out of 5

Monday, August 3, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 78.6°F

Low Temperature: 34.5°F

Average Temperature: 56.4°F

Average Humidity: 37%

Precipitation: 0 in

Chance of Rain: 1%

Chance of Snow: 0%

Maximum Wind: 16.8 mph

UV Index: 9.2

Air Quality

AQI: 1 - Good

PM2.5: 4.14 μg/m3

PM10: 4.88 μg/m3

Carbon Monoxide: 110.61 μg/m3
Nitrogen Dioxide: 2.79 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 89.42 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:28 PM
Sunset: 8:47 PM
Daylight: 14 hrs 36 mins

Moonrise: 10:49 PM
Moon Transit: 12:00 AM
Moonset: 11:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:00 PM - 4:30 PM

Minor Periods

10:19 PM - 11:49 PM
11:11 AM - 12:41 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 77.3°F

Low Temperature: 28.6°F

Average Temperature: 52.4°F

Average Humidity: 48%

Precipitation: 0 in

Chance of Rain: 2%

Chance of Snow: 0%

Maximum Wind: 10.5 mph

UV Index: 8

Air Quality

AQI: 1 - Good

PM2.5: 3.47 μg/m3

PM10: 3.79 μg/m3

Carbon Monoxide: 119.57 μg/m3
Nitrogen Dioxide: 8.07 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 56 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:28 PM
Sunset: 8:45 PM
Daylight: 14 hrs 33 mins

Moonrise: 11:11 PM
Moon Transit: 5:44 AM
Moonset: 12:55 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:14 AM - 7:44 AM
2:46 PM - 5:16 PM

Minor Periods

12:00 AM - 12:00 AM
12:25 AM - 1:55 PM

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

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather for Yellowstone National Park, Wyoming

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Heat Advisory issued July 31 at 12:49AM MDT until August 2 at 10:00PM MDT by NWS Riverton WY

Heat Advisory issued July 31 at 9:58AM MDT until August 2 at 10:00PM MDT by NWS Riverton WY

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Yellowstone National Park, WY

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