Station Name: MERCED R A HAPPY ISLES BRIDGE NR YOSEMITE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 4,095 feet

Nearest Address:
Happy Isle Loop Rd
Yosemite Valley, CA 95389
Mariposa County

GPS Coordinates: 37.73131496, -119.5590514

Nearby Water Temperatures

Heat Advisory issued July 13 at 7:31PM PDT until July 16 at 11:00PM PDT by NWS Hanford CA

Effective: Mon July 13, 2026, 7:31 PM
Expires: Tue July 14, 2026, 4:00 AM

* WHAT...High temperatures ranging from 102 to 108 expected. Overnight lows will only drop into the mid to upper 70s. * WHERE...Across the Central and Southern San Joaquin Valley and adjacent lower foothills * WHEN...From 11 AM Tuesday to 11 PM PDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

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 evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.