183
FXUS66 KSGX 291815
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
1115 AM PDT Fri May 29 2026

.SYNOPSIS...
Cloudy skies will likely clear from west to east today. Drier
conditions expected over the weekend and into next week. Night and
morning low clouds will be present each day, becoming shallower
into early next week. A gradual warming expected through the
weekend with minor variations in temperatures each day for next
week.

&&

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

Areas of light rain and drizzle were present this morning across the
coastal basin. Over the past 12 hours, most areas have received 0.01-
0.10 inches of rain, with a few locations on the mountain foothills
0.12 to 0.20 inches. Dry conditions are expected to prevail this
afternoon and through the rest of the forecast period.

Marine layer low clouds and fog are expected to be present each
night and morning through the forecast period. Areas of low clouds
and fog should be present in the eastern valleys tonight into
Saturday. The marine layer is expected to become shallower next
week, with low clouds and fog only along the coast and into the
western valleys at times.

Highs Saturday are expected to be 3 to 5 degrees warmer than today
along the coast, 5 to 12 degrees warmer than today in the valleys
and deserts, and 12 to 20 degrees warmer than today in the
mountains. A few additional degrees of warming is expected from the
coast to the deserts on Sunday. For next week, Monday and Tuesday
will see a few degrees of cooling along the coast and valleys, with
temperatures varying a few degrees each day Wednesday through
Friday. There is increasing spread in high temperature guidance for
the middle to end of the week, especially for the valleys. For
example, the NBM has a 9 to 10 degree spread between the coolest and
warmest guidance for high temperatures in Riverside for Wednesday
and Thursday.

&&

.AVIATION...
291800Z...Coast/Valleys/Coastal Mountain Slopes...SCT-BKN low clouds
based 3000-5000 ft MSL will continue to try and break out through
the afternoon, but may linger across the coastal basin. Patchy low
clouds based near 1500-2000 ft MSL develop over along the coastline
around 01-03z Sat, and move up to 10 miles inland. VIS down to 3-6SM
with locally lower where clouds intersect terrain. Clouds will
lift/clear generally after 16z Sat.

Higher Mountains/Deserts...VFR conditions expected through the
period. Westerly wind gusts 25-35 kts through mountain passes and
along desert slopes through 06z Sat. Local up/downdrafts and local
LLWS in lee (east) of mountains.

&&

.MARINE...
Northwest wind gusts will approach 20 kts over outer coastal waters
Saturday afternoon and evening. Otherwise, no hazardous marine
conditions are expected through Tuesday.

&&

.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.


&&

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

&&

$$

PUBLIC...CO
AVIATION/MARINE...Zuber

NWS San Diego (SGX) Office