San Miguel, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

313
FXUS66 KSGX 070941
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
241 AM PDT Mon Jul 7 2025

.SYNOPSIS...
High pressure aloft will strengthen across southern California
through the middle of this week with the heat peaking on
Wednesday and Thursday with high temperatures for inland areas 5
to 10 degrees above average. Not as hot for next weekend into
early next week with high temperatures for next Sunday and Monday
near to around 5 degrees below average for the coast and valleys
and around 5 degrees above average for the deserts. Night and
morning coastal low clouds will spread into the western valleys
for early this week and again for next weekend. The marine layer
will be shallower for Wednesday through Friday with the coastal
low clouds only spreading into the far western valleys.

&&

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

.SHORT TERM (Today through Wednesday)...
Upper level low pressure will remain centered off the coast of
northern and central northern California through Tuesday before
weakening and move inland through northern California on Tuesday
night and Wednesday. High pressure aloft over the interior
southwest states will strengthen and expand across southern
California for Wednesday and Thursday. High temperatures will warm
for Tuesday and Wednesday with not much change for Thursday.

Wednesday high temperatures will be as much as 5 to 10 degrees
above average for inland areas with high temperatures on Wednesday
ranging from the 70s near the coast to the mid 90s to 102 for the
Inland Empire with 114 to 118 for the lower deserts.

A marine layer around 2000 feet deep will decrease to around 1500
feet on Wednesday. Night and morning coastal low clouds will
continue to extend inland into the western valleys into Tuesday
morning, then only into the far western valleys for late Tuesday
night into Wednesday morning.

&&

.LONG TERM (Thursday through Sunday)...
Not much change in high temperatures for Thursday followed by
cooling for next weekend into early next week as high pressure
aloft slowly weakens. For next Sunday and Monday, high
temperatures for the coast and valleys will be near to around 5
degrees below average with the deserts around 5 degrees above
average. High temperatures for next Sunday will range from the
lower to mid 70s near the coast to the upper 80s to upper 90s for
the Inland Empire with 110 to 114 for the lower deserts. The
marine layer will deepen to 1500 to 2000 feet by next Sunday and
Monday with high and morning coastal low clouds extending inland
to the western valleys.

&&

.AVIATION...
070900Z....Coast/Valleys..Low clouds 900-1400 ft MSL have filled 10-
15 miles inland. Local visibility restrictions 2-5 SM will occur
where clouds intersect with elevated coastal and western valley
terrain. Stratus deck will scatter and clear 15-17Z Monday morning.
Patchy low clouds 700-1200 ft MSL reform again late Monday evening,
likely moving ashore 05-08Z Tue.

Mountains/Deserts...Mostly clear with unrestricted VIS through
Tuesday.

&&

.MARINE...
A robust onshore push Tuesday afternoon will bring NW wind gusts
approaching 20 kts in the outer waters. Otherwise, no hazardous
marine weather is expected through Thursday.

&&

.BEACHES...
Long period southerly swell generating 4-6 ft surf for south facing
beaches will gradually subside through Monday. Strong rip and
longshore currents at all beaches expected through Tuesday.

&&

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

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Extreme Heat Warning from 10 AM Wednesday to 8 PM PDT Thursday
     for Coachella Valley-San Diego County Deserts.

PZ...None.

&&

$$

PUBLIC...17
AVIATION/MARINE/BEACHES...Westerink