Imperial Beach, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

995
FXUS66 KSGX 140409
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
909 PM PDT Fri Jun 13 2025

.SYNOPSIS...
Temperatures expected to fluctuate between periods of warming and
cooling into next week. Overall, temperatures will stay 5 to 10
degrees above average at their warmest and around 5 degrees above
average at their coolest. Night and morning low clouds and fog can
be expected each day and will reach into portions of the valleys.
Slight increase in westerly winds expected over the mountains and
into the deserts early in the upcoming week.

&&

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

Update: Models have remained nearly consistent in terms of the
overall pattern through the weekend. The ridge is going to continue
to strengthen and allow for temperatures to warm up substantially.
Father`s Day (Sunday) is still looking to be the warmest day of the
week. The marine layer will also continue to thin and lower going
into the weekend, with less coverage. There will be higher clouds
passing by tomorrow, which will keep it partly to mostly cloudy for
most locations, despite lower level clouds eroding out by later in
the morning for most of the coastal and inland areas, as the PBL
remains very dry. There could be a few areas right along the
immediate coastline that go periodically broken with lower level
clouds. Otherwise, beyond that, models also continue to show a
longwave trough edging in towards the region and allowing for a
gradual cooldown to occur going into the middle of next week.

(Previous discussion submitted at 117 PM):

At 1 PM, low clouds had cleared from inland areas but are continuing
to linger along area beaches. Low confidence in complete clearing at
the beaches this afternoon, with partial and intermittent clearing
most likely. Low clouds and fog are expected to remain persistent
each night and morning for the coast and into portions of the
valleys into next week.

High pressure will build from the south this weekend bringing an
increase in high temperatures, peaking on Sunday. Highs Saturday
will be 3 to 5 degrees warmer than today. By Sunday, high
temperatures will be around 5 degrees above average near the coast
and 10 degrees above average further inland. NBM chances for the low
desert to exceed 115 degrees on Sunday is around 15 percent, with an
over 90 percent chance of high exceeding 110 degrees. West of the
mountains, there is a 50 to 80 percent chance of portions of the
Inland Empire exceeding 100 degrees and a 30 to 50 percent chance
portions of eastern San Diego County valleys exceeding 100 degrees
Sunday. Portions of inland Orange County (east of Interstate 5) have
a 30 to 50 percent chance of temperatures exceeding 90 degrees.

A low pressure system moving inland through California on Monday
will strengthen onshore flow for Monday and Tuesday. This will
result in a slight increase in westerly winds over the mountains and
into the deserts. In addition, slight cooling will spread inland on
Monday and Tuesday. By Tuesday high temperatures will be around 5
degrees above average. Wednesday will see a few degrees of warming
as the ridge rebounds in the wake of the passing trough with cooler
conditions expected Thursday and Friday as a stronger, deeper trough
digs into the Pacific Northwest.

&&

.AVIATION...
140400Z....Coast/Valleys...Low clouds based around 1000-1500 feet
MSL will lower to 600-100 feet MSL and push up to 10-15 miles inland
04-06z. Low clouds briefly settle over the western Inland Empire 09-
14z. Vis locally reduced 0-5 SM along higher coastal terrain and for
some inland valleys. Clearing Saturday morning 15-16Z inland and 17-
19Z for the coast, with some patchy low clouds lingering along the
immediate coast. Low clouds redevelop and push inland again 03-05z
Sunday.

Otherwise...SCT high clouds and unrestricted vis tonight and
Saturday.

&&

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

&&

$$

UPDATE...Stewey
PUBLIC...CO
AVIATION/MARINE...Westerink