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

Current Water Temperature

119.5°F

Measurement Time: Saturday, July 11, 2026, 11:15 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

87.3°F
Sunny
Sunny
72.5°F
83.3°F
15%
WSW 13.4 mph
15.4 mph
87.3°F
34.2°F
0 in
3%
6 mi
1012 mbar
2.4

Five Day Weather Forecast

Sunny
Sat
H: 89°F
L: 43°F
Sunny
Sun
H: 95°F
L: 47°F
Sunny
Mon
H: 93°F
L: 46°F
Sunny
Tue
H: 94°F
L: 49°F
Sunny
Wed
H: 90°F
L: 48°F

Air Quality

AQI: 1 - Good
PM2.5: 2.9 μg/m3
PM10: 6.5 μg/m3
Carbon Monoxide: 94 μg/m3
Nitrogen Dioxide: 0.3 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 102 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:28 PM
Sunset: 9:09 PM
Daylight: 15 hrs 22 mins
Moonrise: 2:20 AM
Moon Transit: 10:39 AM
Moonset: 7:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

7:49 PM - 10:19 PM
10:09 AM - 12:39 AM

Minor Periods

6:37 PM - 8:07 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Extreme Heat Warning issued July 11 at 1:31AM MDT until July 13 at 9:00PM MDT by NWS Riverton WY

Effective: Sat July 11, 2026, 1:31 AM
Expires: Sat July 11, 2026, 6:15 PM

* WHAT...Dangerously hot conditions with temperatures from 100 to 110 degrees below 6,000 feet and 90 to 100 degrees between 6,000 and 7,500 feet each day. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...From noon today to 9 PM MDT Monday. The hottest temperatures are expected on Sunday afternoon. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Saturday, July 11, 2026

Weather Forecast

Sunny
89.3°F
43.2°F
66.9°F
31%
0 in
1%
0%
15.4 mph
10.9


Air Quality

AQI: 1 - Good
PM2.5: 3.3 μg/m3
PM10: 7.15 μg/m3
Carbon Monoxide: 95.21 μg/m3
Nitrogen Dioxide: 2.76 μg/m3
Sulphur Dioxide: 0.27 μg/m3
Ozone: 87.83 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:28 PM
Sunset: 9:09 PM
Daylight: 15 hrs 22 mins
Moonrise: 2:20 AM
Moon Transit: 10:39 AM
Moonset: 7:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

7:49 PM - 10:19 PM
10:09 AM - 12:39 AM

Minor Periods

6:37 PM - 8:07 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Sunny
95.2°F
46.5°F
70.5°F
23%
0 in
1%
0%
15.7 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 3.62 μg/m3
PM10: 10 μg/m3
Carbon Monoxide: 90.92 μg/m3
Nitrogen Dioxide: 2.91 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 85.21 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:28 PM
Sunset: 9:08 PM
Daylight: 15 hrs 21 mins
Moonrise: 3:16 AM
Moon Transit: 11:45 AM
Moonset: 8:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

8:56 PM - 11:26 PM
11:15 AM - 1:45 PM

Minor Periods

7:45 PM - 9:15 PM
2:46 AM - 4:16 AM

Action Rating: 4 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
93.4°F
45.9°F
70°F
35%
0 in
1%
0%
7.8 mph
10.8


Air Quality

AQI: 1 - Good
PM2.5: 4.4 μg/m3
PM10: 7.08 μg/m3
Carbon Monoxide: 95.08 μg/m3
Nitrogen Dioxide: 3.09 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 85.29 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:28 PM
Sunset: 9:08 PM
Daylight: 15 hrs 19 mins
Moonrise: 4:27 AM
Moon Transit: 12:52 AM
Moonset: 9:08 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:22 AM - 2:52 PM

Minor Periods

8:38 PM - 10:08 PM
3:57 AM - 5:27 AM

Action Rating: 5 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
93.6°F
49.1°F
71.1°F
39%
0 in
2%
0%
10.5 mph
10.9


Air Quality

AQI: 1 - Good
PM2.5: 4.88 μg/m3
PM10: 7.48 μg/m3
Carbon Monoxide: 98.64 μg/m3
Nitrogen Dioxide: 3.8 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 80.83 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:28 PM
Sunset: 9:07 PM
Daylight: 15 hrs 17 mins
Moonrise: 5:48 AM
Moon Transit: 1:56 PM
Moonset: 9:48 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:26 PM - 3:56 PM

Minor Periods

9:18 PM - 10:48 PM
5:18 AM - 6:48 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
90.3°F
48.2°F
67.5°F
60%
0.21 in
59%
0%
12.3 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 5.37 μg/m3
PM10: 6.4 μg/m3
Carbon Monoxide: 119.43 μg/m3
Nitrogen Dioxide: 7.43 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 61.43 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

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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