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

Current Water Temperature

114.4°F

Measurement Time: Tuesday, April 21, 2026, 4:15 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

58.4°F
Sunny
Sunny
57.8°F
58.4°F
38%
S 7.6 mph
8.7 mph
57.8°F
34.4°F
0 in
2%
6 mi
1010 mbar
4.3

Five Day Weather Forecast

Partly Cloudy
Tue
H: 65°F
L: 27°F
Moderate rain
Wed
H: 48°F
L: 31°F
Moderate rain
Thu
H: 43°F
L: 25°F
Light snow showers
Fri
H: 34°F
L: 21°F
Patchy light snow
Sat
H: 36°F
L: 11°F

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 15.95 μg/m3
Carbon Monoxide: 130.85 μg/m3
Nitrogen Dioxide: 1.05 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 133 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:21 PM
Sunset: 8:16 PM
Daylight: 13 hrs 48 mins
Moonrise: 9:10 AM
Moon Transit: 5:40 PM
Moonset: 1:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
5:10 PM - 7:40 PM

Minor Periods

8:40 AM - 10:10 AM
12:36 AM - 2:06 AM

Action Rating: 2 out of 5

Winter Storm Watch issued April 20 at 11:33PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT

Effective: Mon April 20, 2026, 11:33 PM
Expires: Tue April 21, 2026, 6:15 PM

* WHAT...Heavy snow possible. Total snow accumulations between 4 and 10 inches, with isolated higher amounts possible. Winds could gust as high as 50 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and Highwood Mountains, and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Strong winds could cause tree or power line damage.

Remember, a Winter Storm Watch means that there is at least a 50% chance of impactful winter weather conditions during the watch period. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.


Winter Weather Advisory issued April 21 at 2:45AM MDT until April 23 at 11:00PM MDT by NWS Riverton WY

Effective: Tue April 21, 2026, 2:45 AM
Expires: Tue April 21, 2026, 6:00 PM

* WHAT...Snow expected. Total snow accumulations between 6 and 12 inches with the highest amounts across southwestern portions of the Park. Winds gusting as high as 40 mph. * WHERE...Yellowstone National Park. * WHEN...From noon Wednesday to 11 PM MDT Thursday. * IMPACTS...Travel could be very difficult.

Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For current road conditions across Yellowstone National Park, visit https://nps.gov/yellowstone .
Tuesday, April 21, 2026

Weather Forecast

Partly Cloudy
64.5°F
27°F
44.7°F
53%
0 in
0%
0%
13.2 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 5.59 μg/m3
PM10: 18.07 μg/m3
Carbon Monoxide: 137.97 μg/m3
Nitrogen Dioxide: 2.11 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 128.76 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:21 PM
Sunset: 8:16 PM
Daylight: 13 hrs 48 mins
Moonrise: 9:10 AM
Moon Transit: 5:40 PM
Moonset: 1:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
5:10 PM - 7:40 PM

Minor Periods

8:40 AM - 10:10 AM
12:36 AM - 2:06 AM

Action Rating: 2 out of 5

Wednesday, April 22, 2026

Weather Forecast

Moderate rain
48.3°F
31.1°F
39.4°F
73%
0.27 in
89%
0%
19.9 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 18.13 μg/m3
Carbon Monoxide: 137.65 μg/m3
Nitrogen Dioxide: 1.99 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 117.96 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:21 PM
Sunset: 8:18 PM
Daylight: 13 hrs 51 mins
Moonrise: 10:22 AM
Moon Transit: 6:42 PM
Moonset: 2:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

2:49 AM - 5:19 AM
6:12 PM - 8:42 PM

Minor Periods

9:52 AM - 11:22 AM
1:36 AM - 3:06 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Moderate rain
42.9°F
25.3°F
35°F
86%
0.77 in
81%
36%
9.8 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 1.45 μg/m3
PM10: 1.88 μg/m3
Carbon Monoxide: 142.29 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 101.44 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 1:21 PM
Sunset: 8:19 PM
Daylight: 13 hrs 54 mins
Moonrise: 11:40 AM
Moon Transit: 7:40 PM
Moonset: 2:51 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
7:10 PM - 9:40 PM

Minor Periods

11:10 AM - 12:40 AM
2:21 AM - 3:51 AM

Action Rating: 3 out of 5

Friday, April 24, 2026

Weather Forecast

Light snow showers
34.3°F
20.9°F
27°F
84%
0.21 in
89%
59%
8.3 mph
5.8


Air Quality

AQI: 1 - Good
PM2.5: 2.59 μg/m3
PM10: 2.94 μg/m3
Carbon Monoxide: 141.51 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 105 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:20 PM
Sunset: 8:20 PM
Daylight: 13 hrs 57 mins
Moonrise: 12:58 AM
Moon Transit: 8:32 PM
Moonset: 3:25 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

4:45 AM - 7:15 AM
8:02 PM - 10:32 PM

Minor Periods

12:28 AM - 1:58 PM
2:55 AM - 4:25 AM

Action Rating: 3 out of 5

Saturday, April 25, 2026

Weather Forecast

Patchy light snow
36.1°F
10.8°F
26.5°F
85%
0.12 in
88%
52%
6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.53 μg/m3
PM10: 3.89 μg/m3
Carbon Monoxide: 157.52 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 111 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:20 PM
Sunset: 8:21 PM
Daylight: 14 hrs mins
Moonrise: 2:13 PM
Moon Transit: 9:19 PM
Moonset: 3:51 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
8:49 PM - 11:19 PM

Minor Periods

1:43 PM - 3:13 PM
3:21 AM - 4:51 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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