San Diego County coastal areas
Extreme Heat Watch from FRI 10:00 AM PDT until WED 9:00 PM PDT
Issued September, 30 2026 at 8:47 PM - US/Pacific expires October, 07 2026 at 9:00 PM - US/Pacific
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH
WEDNESDAY EVENING...
* WHAT...Dangerously hot conditions with high temperatures on the
hottest days ranging from around 90 near the coast to the upper 90s
to around 105 for the valleys possible. Low temperatures for
coastal areas into the western valleys will warm into the lower to
mid 70s during the weekend with those warm overnight temperatures
continuing for next week.
* WHERE...Orange County Coastal Areas, Orange County Inland Areas,
San Bernardino and Riverside County Valleys-The Inland Empire, San
Diego County Coastal Areas, San Diego County Valleys, and Santa Ana
Mountains and Foothills.
* WHEN...From Friday morning through Wednesday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...A long-duration heat wave is expected to
develop late this week and continue through much of next week into
the following weekend with Moderate or greater HeatRisk for the
coast and valleys and Major to Extreme HeatRisk for inland coastal
areas into the western valleys.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
