Extreme Heat Watch California | Effective 03/16/2026 02:43

Headline: 
Extreme Heat Watch issued March 16 at 2:43AM PDT until March 20 at 8:00PM PDT by NWS San Diego CA
Event: 
Extreme Heat Watch
Urgency: 
Future
Effective: 
March 16, 2026 - 2:43am
Expires: 
March 16, 2026 - 4:00pm
Description: 
* WHAT...High temperatures in the lower to mid 90s below 4500 feet and in the 80s from 4500 to 6500 feet possible. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...From Thursday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Instruction: 
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. 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.
Area Description: 
San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov