791
FXUS66 KSGX 230828
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
128 AM PDT Fri Oct 23 2026

.SYNOPSIS...
Scattered mostly light showers will continue through this morning,
decrease this afternoon, and end from the northwest tonight. Then
dry and warmer for the weekend through Monday with high
temperatures warming to around average. Then gradually cooler for
next Tuesday through Thursday.

&&

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

.SHORT TERM (Today through Sunday)...
The area of showers over the coastal waters moving into southern
Los Angeles County, Orange County, and northern San Diego County
will continue to move slowly southward along the San Diego County
Coast through this morning. That area will clear southwestern San
Diego County during the afternoon with some additional showers
over the mountains of southwestern San Bernardino, Riverside, and
and San Diego Counties during this afternoon. For this evening,
there will be some additional showers from the coast to the
mountains with those showers ending from the northwest late
tonight. Additional rainfall through tonight from the coast to
the mountains will be mostly 0.10 to 0.33 inch with locally
greater amounts near the coast.

High temperatures will begin to warm today for the mountains and
inland valleys, but with high temperatures as much as 10 to 15
degrees below average for the mountains. High temperatures for
today will be mostly in the 60s and lower 70s for the coast and
valleys and in the 40s and 50s for the mountains.

There will be weak northerly offshore flow on Saturday. North
winds will gust to 30 to 40 mph along the coastal slopes of the
San Bernardino County mountains and below the Cajon Pass from late
tonight into early Saturday afternoon.

High temperatures on Saturday will warm around 5 degrees near the
coast and in the deserts to 5 to 10 degrees for the valleys and
mountains with high temperatures on Sunday warming another few to
around 5 degrees. Sunday high temperatures will still be around 5
degrees below average for the mountains. High temperatures on
Sunday will be mostly in the mid 70s to lower 80s for the coast
and valleys, in the 50s and 60s for the mountains, and in the mid
80s for the lower deserts.

&&

.LONG TERM (Monday through Thursday)...
High temperatures on Monday will warm a few more degrees. This
will be followed by a cooling trend for Tuesday through Thursday
with Thursday high temperatures in the upper 60s to mid 70s for
the coast and valleys, in the 50s to mid 60s for the mountains,
and in the lower 80s for the lower deserts.

There could be some light showers as early as Thursday as a lower
latitude low pressure system moving across the eastern Pacific
moves closer to the West Coast.

NBM chances for 0.01 inch or more of rainfall for the coast to the
mountains increases from 10 to 20 percent for next Friday to 35
to 45 percent on Saturday the 31st to 40 to 50 percent on Sunday
November 1st.

&&

.AVIATION...
230530Z...SCT -SHRA mountains westward will continue through
Friday morning. Cloud bases generally above 3500 feet MSL, except
briefly down to 2500 feet and vis 4-6SM in SHRA. Partial
obscuration of mountains will continue through tonight. Onshore
wind gusts 25-30 kts along desert slopes and locally into deserts
will gradually taper off overnight. -SHRA will gradually taper off
from north to south Friday afternoon, but at the same time
increase in mountains. Clearing all areas after 02Z Friday
evening.

&&

.MARINE...
A storm system will slowly move through the coastal waters through
Friday. Isolated northwest wind gusts will occasionally reach 20
knots Friday. No hazardous marine conditions are expected Friday
night through Tuesday.

&&

.BEACHES...
Astronomical high tides will create minor to moderate coastal
flooding starting Saturday. Tides are 1.4-1.6 feet above
predictions. Morning high tides could reach 7 feet Saturday morning
and are likely to exceed 7.5 feet by Monday morning. Locally
significant impacts expected from Monday to Wednesday.

&&

.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...17
AVIATION/MARINE/BEACHES...MM

NWS San Diego (SGX) Office