Twin Peaks, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

130
FXUS66 KSGX 111557
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
857 AM PDT Wed Jun 11 2025

.SYNOPSIS...
Not much change through Friday with high temperatures for the
coast and valleys within a few degrees of average and around 5
degrees above average for the mountains and deserts. High pressure
to the south will bring warming for the weekend with Sunday high
temperatures around 5 degrees above average near the coast to 5 to
10 degrees above average for inland areas. Then a little cooler
for Monday and Tuesday. Night and morning coastal low clouds will
continue to spread inland into portions of the valleys.

&&

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

.Morning Update...

Satellite this morning shows clouds clearing at a steady pace
across the western valleys. Latest model data shows the best
chance for sunshine across Orange County with higher confidence of
partly to mostly cloudy skies further south in San Diego County
coastal areas this afternoon. Very subtle changes in temperatures
through Saturday expected with slight warming by Sunday. Night and
morning low clouds will continue for western valleys with
intermittent clearing near the coast through Saturday. Otherwise,
no forecast updates.

.Previous Discussion...

.SHORT TERM (Today through Friday)...
Not much change through Friday with high temperatures for the
coast and valleys within a few degrees of average and around 5
degrees above average for the mountains and deserts. High
temperatures will range from around average near the coast to the
80s and lower 90s for the Inland Empire with 105 to 109 for the
lower deserts. The marine layer will remain around 2000 feet deep
with night and morning coastal low clouds spreading inland across
much of the San Diego County valleys and into southern and western
portions of the Inland Empire.

&&

.LONG TERM (Saturday through Tuesday)...
High pressure to the south will bring a few degrees of warming for
Saturday and another few to around 5 degrees of warming on Sunday.
With the warming, Sunday high temperatures will be around 5
degrees above average near the coast to 5 to 10 degrees above
average for inland areas. Sunday high temperatures will range from
the lower to mid 70s near the coast to the 90s for the Inland
Empire with 110 to 114 for the lower deserts.

Then slight cooling on Monday with another few degrees of cooling
for Tuesday with Tuesday high temperatures around 5 degrees above
average. Night and morning coastal low clouds will spread into
the western valleys for the weekend, then may spread a little
farther into the valleys on Tuesday.

&&

.AVIATION...
101515Z....Coast/Valleys...Low clouds based 900-1300 feet MSL with
tops to 2100 feet have started to scatter out of eastern valleys.
Scatter out inland will continue through 17Z, and coastal areas 18-
20Z, but with only partial or intermittent clearing at the immediate
coast. Low clouds begin to move inland again after 01Z Thu, with
similar coverage. Bases around 700-1000 feet MSL and reduced vis
inland and over higher coastal terrain. Similar scatter out times
Thu morning, 16-17Z inland and 18-20Z for coastal areas with only
intermittent clearing along the immediate coast.

Mountains/Deserts...SCT high clouds and unrestricted vis today and
tonight.

&&

.MARINE...
No hazardous marine conditions are expected today through Sunday.

&&

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


&&

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

&&

$$

UPDATE...APR
PUBLIC...17
AVIATION/MARINE...CP