FXUS66 KSGX 231836
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
1136 AM PDT Thu Apr 23 2026

.SYNOPSIS...
High temperatures warming to around average for today and Friday,
then cooler for the weekend with southwest to west winds for the
mountains and deserts gusting to 40 to 50 mph with isolated gusts
to 65 mph. There is also a chance of showers for Saturday through
early Sunday with the most likely time for showers on Saturday
night. Warmer and dry with weaker winds for Monday, then another
chance of showers around the middle of next week.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

.SHORT TERM (Today through Saturday)...
A low pressure system off the California coast will move inland
through central and southern California during the weekend. This
will strengthen the onshore flow and bring cooling, stronger
southwest to west winds for the mountains and deserts, and a
chance of showers from the coastal water to the mountains.

High temperatures for inland areas will warm 5 to 10 degrees today
with high temperatures around average for the mountains and
deserts and a few degrees above average for the coast and valleys.
High temperatures for today will range from around 70 near the
coast to the mid 70s to lower 80s for the Inland Empire with the
lower deserts in the upper 80s. Friday will be slightly cooler for
the coast to the mountains and slightly warmer for the deserts.

High temperatures on Saturday will be a few degrees cooler near
the coast to 8 to 12 degrees cooler for inland areas with high
temperatures as much as 10 to 15 degrees below average for the
mountains. High temperatures on Saturday for the coast and valleys
will be mostly in the 60s with the lower deserts in the upper 70s
to mid 80s.

Southwest to west winds will gust to 30 to 40 mph during the
afternoon and evening for today and Friday, then strengthen to 40
to 50 mph for the weekend with isolated gusts to 65 mph. There
could be some lighter precipitation at times during the day on
Saturday from the coast to the mountains.

&&

.LONG TERM (Saturday night through Wednesday)...
A low pressure system moving inland through central and southern
California during the weekend will bring a chance of showers for
Saturday through early Sunday with the most likely time for
precipitation Saturday night with rainfall from the coast to the
mountains ranging from less than one-tenth inch to around one-
quarter inch.

Not much changes in winds and high temperatures is expected for
Sunday, then dry on Monday with weaker winds and with high
temperatures 5 to 10 degrees warmer for inland areas. Toward the
middle of next week, another low pressure system could bring a
chance of precipitation.

&&

.AVIATION...
231800Z...Coast/Valleys...VFR prevails today under SCT-BKN high
cirrus clouds. Patchy low clouds will struggle to reform tonight
after 06z Friday with 30% chance of cigs over coastal airports. Best
window for any CIGs will be between 12-17z. Should any CIGs form
over the airports, bases will likely be between 1800-2400ft MSL.

Mountains/Deserts...Westerly winds gusting 25-35 kts through passes
and along desert slopes expected to pick back up after 00z Friday.
Local up/downdrafts in lee of mountains during periods of strong
winds. Gusts gradually weakening after 09z Friday.

Otherwise...SCT high clouds today and tonight.

&&

.MARINE...
No hazardous marine conditions are expected through Monday, though
brisk westerly winds 15 to 20 kts are each afternoon,
through Sunday.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.

&&

$$

PUBLIC...Martin
AVIATION/MARINE...Munyan