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

Current Water Temperature

128.1°F

Measurement Time: Sunday, August 2, 2026, 12:15 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

47.6°F
Sunny
Sunny
45.3°F
47.6°F
33%
SSE 4.9 mph
10.3 mph
45.4°F
19.9°F
0 in
0%
6 mi
1015 mbar
0.2

Five Day Weather Forecast

Sunny
Sun
H: 88°F
L: 47°F
Sunny
Mon
H: 74°F
L: 36°F
Sunny
Tue
H: 76°F
L: 30°F
Sunny
Wed
H: 83°F
L: 34°F
Sunny
Thu
H: 86°F
L: 36°F

Air Quality

AQI: 1 - Good
PM2.5: 7.9 μg/m3
PM10: 21.8 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 8.5 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 62 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

Heat Advisory issued August 2 at 12:35AM MDT until August 2 at 10:00PM MDT by NWS Riverton WY

Effective: Sun August 2, 2026, 12:35 AM
Expires: Sun August 2, 2026, 10:00 PM

* WHAT...Hot temperatures expected today. Highs from 98 to 105 below 5800 feet, 90 to 98 above 5800 feet. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...Until 10 PM MDT this evening. * IMPACTS...Heat related illnesses increase during extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Sunday, August 2, 2026

Weather Forecast

Sunny
88.2°F
46.5°F
66.7°F
21%
0 in
0%
0%
17.9 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 8.68 μg/m3
PM10: 16.06 μg/m3
Carbon Monoxide: 122.54 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 100.38 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

Sunny
73.8°F
35.9°F
54.9°F
31%
0 in
1%
0%
11.2 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 4.54 μg/m3
PM10: 5.05 μg/m3
Carbon Monoxide: 105.58 μg/m3
Nitrogen Dioxide: 2.13 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 88.46 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

Sunny
76.2°F
29.6°F
53.1°F
38%
0 in
1%
0%
12.1 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 6.1 μg/m3
PM10: 6.44 μg/m3
Carbon Monoxide: 103.54 μg/m3
Nitrogen Dioxide: 4.03 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 86.25 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

Wednesday, August 5, 2026

Weather Forecast

Sunny
82.7°F
33.9°F
57.8°F
31%
0 in
1%
0%
13.2 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 6.91 μg/m3
PM10: 7.16 μg/m3
Carbon Monoxide: 111.24 μg/m3
Nitrogen Dioxide: 4.4 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 94.58 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:28 PM
Sunset: 8:44 PM
Daylight: 14 hrs 31 mins
Moonrise: 12:11 AM
Moon Transit: 6:33 AM
Moonset: 2:12 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
3:37 PM - 6:07 PM

Minor Periods

1:42 PM - 3:12 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
85.7°F
35.6°F
61.2°F
25%
0 in
1%
0%
12.8 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 8.16 μg/m3
PM10: 8.39 μg/m3
Carbon Monoxide: 158.71 μg/m3
Nitrogen Dioxide: 10.76 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:28 PM
Sunset: 8:43 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:38 AM
Moon Transit: 7:27 AM
Moonset: 3:30 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:57 AM - 9:27 AM
4:33 PM - 7:03 PM

Minor Periods

3:00 PM - 4:30 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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