Station Name: Boiling River at Mammoth,YNP
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 5,686 feet / 1,733 meters

Nearest Address:
N Entrance Rd
Yellowstone National Park, WY 82190
Park County

GPS Coordinates: 44.9851333, -110.6893444

Nearby Water Temperatures

Special Weather Statement issued November 20 at 11:12PM MST by NWS Great Falls MT

Effective: Thu November 20, 2025, 11:12 PM
Expires: Fri November 21, 2025, 3:00 AM

Fog, locally dense in some areas, has developed across portions of Central and Southwest Montana. While most areas will see visibilities of between one to three miles where the fog has developed there will be localized spots where visibilities fall to as low as one quarter of a mile. Travelers should be prepared for changing conditions. Slow down and use low beam headlights if you encounter reductions in visibility due to fog.

Special Weather Statement issued November 21 at 3:20AM MST by NWS Great Falls MT

Effective: Fri November 21, 2025, 3:20 AM
Expires: Fri November 21, 2025, 6:00 AM

Fog, locally dense in some areas, has developed across portions of Central and Southwest Montana. While most areas will see visibilities of between one to three miles where the fog has developed there will be localized spots where visibilities fall to as low as one quarter of a mile. Travelers should be prepared for changing conditions. Slow down and use low beam headlights if you encounter reductions in visibility due to fog.

Dense Fog Advisory issued November 21 at 1:03AM MST until November 21 at 10:00AM MST by NWS Great Falls MT

Effective: Fri November 21, 2025, 1:03 AM
Expires: Fri November 21, 2025, 10:00 AM

* WHAT...Visibility of less than one quarter of a mile in dense fog. * WHERE...Gallatin Valley. * WHEN...Until 10 AM MST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.