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

Heat Advisory issued July 23 at 9:44PM MDT until July 26 at 9:00PM MDT by NWS Billings MT

Effective: Thu July 23, 2026, 9:44 PM
Expires: Fri July 24, 2026, 9:45 PM

* WHAT...Hot conditions with high temperatures of 90 to 100. Saturday is expected to be the hottest day. * WHERE...Portions of central and south central Montana. * WHEN...From 9 AM Friday to 9 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will become dangerous to anyone without adequate cooling and hydration.

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

Heat Advisory issued July 24 at 1:28AM MDT until July 26 at 9:00PM MDT by NWS Billings MT

Effective: Fri July 24, 2026, 1:28 AM
Expires: Sat July 25, 2026, 1:30 AM

* WHAT...Hot conditions with high temperatures of 90 to 100. Saturday is expected to be the hottest day. * WHERE...Portions of central and south central Montana. * WHEN...From 9 AM this morning to 9 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will become dangerous to anyone without adequate cooling and hydration.

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

Heat Advisory issued July 24 at 12:35PM MDT until July 26 at 9:00PM MDT by NWS Billings MT

Effective: Fri July 24, 2026, 12:35 PM
Expires: Sat July 25, 2026, 12:45 PM

* WHAT...Hot conditions with high temperatures of 90 to 100. Saturday is expected to be the hottest day. * WHERE...Portions of central and south central Montana. * WHEN...Until 9 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will become dangerous to anyone without adequate cooling and hydration.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

Heat Advisory issued July 24 at 11:26AM MDT until July 26 at 9:00PM MDT by NWS Riverton WY

Effective: Fri July 24, 2026, 11:26 AM
Expires: Sat July 25, 2026, 12:00 PM

* WHAT...Very hot conditions with high temperatures from 95 to 102 degrees. * WHERE...Lower elevations of central and north-central Wyoming, east of the continental divide. * WHEN...From noon Saturday to 9 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or late evening. Take action when you see symptoms of heat exhaustion and heat stroke.