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

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 .

Winter Weather Advisory issued April 21 at 12:09PM MDT until April 23 at 11:00PM MDT by NWS Riverton WY

Effective: Tue April 21, 2026, 12:09 PM
Expires: Wed April 22, 2026, 7:00 AM

* 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. * ADDITIONAL DETAILS...Total snow amounts up to 3 inches at Mammoth.

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.