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San Onofre, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for 4 Miles SE San Clemente CA
National Weather Service Forecast for: 4 Miles SE San Clemente CA
Issued by: National Weather Service San Diego, CA
Updated: 1:19 am PDT Jun 28, 2025
 
Today

Today: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 71. West wind around 5 mph.
Patchy Fog
then Mostly
Sunny
Tonight

Tonight: Patchy fog after 11pm.  Otherwise, increasing clouds, with a low around 62. West wind around 5 mph.
Patchy Fog

Sunday

Sunday: Patchy fog before 11am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 72. West wind 5 to 10 mph.
Patchy Fog
then Mostly
Sunny
Sunday
Night
Sunday Night: Increasing clouds, with a low around 61. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Increasing
Clouds
Monday

Monday: Cloudy, then gradually becoming mostly sunny, with a high near 72. West wind 5 to 10 mph.
Decreasing
Clouds
Monday
Night
Monday Night: Increasing clouds, with a low around 62.
Increasing
Clouds
Tuesday

Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 72.
Decreasing
Clouds
Tuesday
Night
Tuesday Night: Increasing clouds, with a low around 62.
Increasing
Clouds
Wednesday

Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 71.
Decreasing
Clouds
Hi 71 °F Lo 62 °F Hi 72 °F Lo 61 °F Hi 72 °F Lo 62 °F Hi 72 °F Lo 62 °F Hi 71 °F

 

Today
 
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 71. West wind around 5 mph.
Tonight
 
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 62. West wind around 5 mph.
Sunday
 
Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 72. West wind 5 to 10 mph.
Sunday Night
 
Increasing clouds, with a low around 61. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
 
Cloudy, then gradually becoming mostly sunny, with a high near 72. West wind 5 to 10 mph.
Monday Night
 
Increasing clouds, with a low around 62.
Tuesday
 
Cloudy, then gradually becoming mostly sunny, with a high near 72.
Tuesday Night
 
Increasing clouds, with a low around 62.
Wednesday
 
Cloudy, then gradually becoming mostly sunny, with a high near 71.
Wednesday Night
 
Increasing clouds, with a low around 61.
Thursday
 
Cloudy, then gradually becoming mostly sunny, with a high near 70.
Thursday Night
 
Increasing clouds, with a low around 61.
Independence Day
 
Cloudy, then gradually becoming mostly sunny, with a high near 70.

 

Forecast from NOAA-NWS for 4 Miles SE San Clemente CA.

Weather Forecast Discussion
415
FXUS66 KSGX 281617
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
917 AM PDT Sat Jun 28 2025

.SYNOPSIS...
High temperatures will warm a few to around 5 degrees this weekend
with high temperatures within a few degrees of average to around
5 degrees above average. High temperatures will then cool about 5
degrees through the middle part of next week with high
temperatures on Thursday around average to around 5 degrees below
average for the valleys. The marine layer lowers some this
weekend, but lifts again early next week, with night and morning
coastal low clouds spreading into the western valleys, clearing by
the mid-late mornings.

&&

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

Saturday morning update...
Marine layer clouds have cleared fairly quickly to the beaches
this morning, with full sunshine expected Most of the forecast
remains on track through the weekend into early next way. Staying
on the warm side with stronger winds through inland mountain
passes Sunday into Monday. Today/Saturday will be the hottest days
for the coasts/valleys, while the heat stays on through
Tuesday/Wednesday in the deserts.

This weekend...

Ridging continues to become more amplified over the inner desert
southwest and this will allow for temperatures to continue to warm,
especially for the deserts. There will be some gusty winds for the
high deserts and low deserts prone to gusty winds during the
afternoon hours today (San Gorgonio Pass with gap flow winds),
although these winds should remain below criteria, and will further
weaken going into Sunday. The marine layer is going to remain nearly
the same as far as coverage and timing of these clouds scattering
out later on this morning, which appears to be shortly after sunrise
for the inland valleys, and closer to 9 to 10 AM for the coastal
areas. There could be some locations along the immediate coastline
which remain broken, or occasionally go broken throughout the
afternoon hours. There could be some patchy fog over the waters and
for locations along the coast. There could also be some of the wind-
sheltered inland areas getting patchy fog as well towards the early
morning hours. Temperatures will be even warmer today and tomorrow,
especially for the Inland Empire (IE), with some locations near San
Bernardino and Riverside possibly hitting the 100 degree mark. The
marine layer should remain relatively thin and mostly confined to
the coastal regions, although there will be some clouds penetrating
into the IE during the overnight hours.

Throughout the work week...

The overall flattened ridge positioned over the western states will
remain nearly stationary as an upper level trough and low associated
with it becomes nearly quasi-stationary with only slight propagation
towards the east, positions itself over the Pac waters just west of
Pt. Conception. The amplification of the ridge and a strong areas of
high pressure located over Arizona of 592 dm, along with an increase
of RH given the southerly flow in the lower levels will allow for
Heat Index values to approach the threshold for Heat Advisory
products. Although at this time there is not enough coverage to
warrant the issuance of this product, this will continue to be
evaluated to look for trends and will be later determined if the
lower deserts will need a Heat Advisory for Monday.

This U/L low will slowly meander eastward and allow for a gradual
cooldown each day, beginning Tuesday and throughout the rest of the
work week. The onshore flow will be enhanced by the trough to the
west, and the marine layer will also continue to ride a little and
thicken up towards the end of the week. This U/L low also appears to
be quite moisture-starved, although it could allow for the
development of an afternoon shower or possibly a thunderstorm over
the higher terrain and/or deserts by later in the week, depending
on the progression of this feature. It may also allow for there
to be some areas of drizzle for the coastal and inland areas as
the onshore flow becomes more persistent and allows the marine
layer to thicken up more. Temperatures will continue to be
relatively cool, and slightly below the seasonal average for most
locations going into the early part of next weekend as an overall
trough remains over the region, as ensembles continue to suggest.

&&

.AVIATION...
281600Z....Coast/Valleys...Low clouds based around 900-1300ft MSL
have been rapidly clearing to the beaches this morning, with only a
few patches remaining along portions of the coast. Patchy low clouds
will likely linger at San Diego County beaches through the
afternoon. Clouds redevelop and push inland tonight up to 5-10 miles
with similar or slightly lower bases generally after 04z.

.Mountains/Deserts...Clear skies with unrestricted VIS through
Sunday morning. SW/W wind gusts 25-35 kts across the deserts and
mountain passes in the afternoon and early evening leading to MOD
UDDFS at times. Winds weaken substantially by 06z Sunday.

&&

.MARINE...
Periods of gusty northwest winds around 15 to 18 knots possible in
the outer coastal waters near San Clemente Island Sunday afternoon
and evening. Otherwise, no hazardous marine conditions are expected
through Wednesday.

&&

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

&&

$$

PUBLIC...Munyan
AVIATION/MARINE...Munyan
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather








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