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

Current Water Temperature

118.4°F

Measurement Time: Thursday, July 9, 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

81.9°F
Partly Cloudy
Partly Cloudy
68.7°F
78.4°F
19%
WSW 10.7 mph
12.3 mph
81.9°F
35.9°F
0 in
46%
6 mi
1009 mbar
6.2

Five Day Weather Forecast

Sunny
Thu
H: 82°F
L: 41°F
Sunny
Fri
H: 84°F
L: 41°F
Sunny
Sat
H: 88°F
L: 44°F
Sunny
Sun
H: 96°F
L: 46°F
Sunny
Mon
H: 94°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 1.7 μg/m3
PM10: 2.3 μg/m3
Carbon Monoxide: 93 μg/m3
Nitrogen Dioxide: 0.1 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 115 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:28 PM
Sunset: 9:10 PM
Daylight: 15 hrs 25 mins
Moonrise: 1:08 AM
Moon Transit: 8:39 AM
Moonset: 4:27 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

8:09 AM - 10:39 AM
5:44 PM - 8:14 PM

Minor Periods

3:57 PM - 5:27 PM
12:38 AM - 2:08 AM

Action Rating: 2 out of 5

Extreme Heat Watch issued July 9 at 12:02PM MDT until July 13 at 9:00PM MDT by NWS Riverton WY

Effective: Thu July 9, 2026, 12:02 PM
Expires: Fri July 10, 2026, 8:15 AM

* WHAT...Dangerously hot conditions with temperatures 98 to 108 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 Saturday afternoon through Monday evening. * 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.


Extreme Heat Watch issued July 9 at 10:11AM MDT until July 13 at 9:00PM MDT by NWS Riverton WY

Effective: Thu July 9, 2026, 10:11 AM
Expires: Fri July 10, 2026, 8:00 AM

* WHAT...Dangerously hot conditions with heat index values up to 100 to 110 degrees possible. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...From Saturday afternoon through Monday evening. * 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.
Thursday, July 9, 2026

Weather Forecast

Sunny
81.9°F
40.6°F
62.3°F
42%
0 in
17%
0%
11.2 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 2.27 μg/m3
PM10: 2.89 μg/m3
Carbon Monoxide: 92.88 μg/m3
Nitrogen Dioxide: 4.12 μg/m3
Sulphur Dioxide: 0.15 μg/m3
Ozone: 88.58 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:28 PM
Sunset: 9:10 PM
Daylight: 15 hrs 25 mins
Moonrise: 1:08 AM
Moon Transit: 8:39 AM
Moonset: 4:27 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

8:09 AM - 10:39 AM
5:44 PM - 8:14 PM

Minor Periods

3:57 PM - 5:27 PM
12:38 AM - 2:08 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
83.7°F
41.2°F
63.3°F
34%
0 in
1%
0%
14.5 mph
10.3


Air Quality

AQI: 1 - Good
PM2.5: 3.23 μg/m3
PM10: 4.62 μg/m3
Carbon Monoxide: 96.33 μg/m3
Nitrogen Dioxide: 4.14 μg/m3
Sulphur Dioxide: 0.24 μg/m3
Ozone: 94.54 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:28 PM
Sunset: 9:10 PM
Daylight: 15 hrs 23 mins
Moonrise: 1:39 AM
Moon Transit: 9:36 AM
Moonset: 5:48 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

6:44 PM - 9:14 PM
9:06 AM - 11:36 AM

Minor Periods

5:18 PM - 6:48 PM
1:09 AM - 2:39 AM

Action Rating: 3 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
88.2°F
43.8°F
66.3°F
31%
0 in
1%
0%
17.4 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 3.66 μg/m3
PM10: 8.32 μg/m3
Carbon Monoxide: 95.67 μg/m3
Nitrogen Dioxide: 3.02 μg/m3
Sulphur Dioxide: 0.27 μg/m3
Ozone: 88.63 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
96°F
45.5°F
69.7°F
23%
0 in
2%
0%
15.7 mph
10.4


Air Quality

AQI: 1 - Good
PM2.5: 3.32 μg/m3
PM10: 10.17 μg/m3
Carbon Monoxide: 92.98 μg/m3
Nitrogen Dioxide: 2.65 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 85.25 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
94.3°F
46.8°F
69.4°F
38%
0 in
17%
0%
10.7 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 4.4 μg/m3
PM10: 8.06 μg/m3
Carbon Monoxide: 107.86 μg/m3
Nitrogen Dioxide: 7.06 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 70 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

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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