Big Bear Lake, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

900
FXUS66 KSGX 141932
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
1232 PM PDT Sun Jun 14 2026

.SYNOPSIS...
Fair and benign weather will continue this coming week, with only
subtle variations. Temperatures will continue a little above
average through Wednesday before lower pressure aloft brings
cooler weather later in the week. The marine layer and coastal
cloud coverage will continue similar through Wednesday, before
deepening and extending clouds farther inland Thursday into
Saturday. Expect westerly winds through mountains and into deserts
to become a little stronger during the afternoons and evenings
later this week.

&&

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

Coastal low clouds cleared relatively quickly this morning, and
even cleared from most beaches completely today. The 12Z sounding
showed the marine inversion this morning a little weaker than in
recent mornings, allowing for a little better mixing between the
humid marine layer and the dry warmer air above it, which led to
the better clearing. Above average sea surface temperatures have
also contributed to the weakening of the marine inversion.
Meanwhile, the tepid monsoon intrusion continues, with a few
cumulus clouds forming over the mountains this afternoon, and
showers along the baja spine not too far south of the border. Our
weather will continue more or less as is through Tuesday. The
upper level pattern shows a very weak trough underlying a ridge
along the West Coast, and no disernible change through Wednesday.
It is June after all, when the polar jet stream heads north to
summer in Canada. The marine layer will contine more or less at
its current depth of about 1000-1500 feet deep, which will
preclude low clouds and fog from entering the Inland Empire.
Temperatures will remain just a few degrees above seasonal
averages through Wednesday. The monsoon moisture, paltry as it is,
will go away completely by Wednesday. Until then you might see a
few mid level cumulus clouds each day through Tuesday, especially
over the mountains during the afternoons. A low pressure trough
begins to develop off the West Coast around Thursday and deepens
Friday and Saturday as it moves through California. That will flip
temperatures from a few degrees above average to a few degrees
below starting Thursday. The marine layer will respond by
deepening, extending the nocturnal clouds farther inland each
night and morning. There should be stronger onshore winds through
mountain passes and into deserts each afternoon and evening.

&&

.AVIATION...
141800Z...Coast/Western Valleys...Low clouds have mostly scattered
out with some clouds lingering at the immediate coast. Mostly VFR
through the afternoon. Clouds based 800-1200 ft MSL return to the
immediate coast after 00z Mon, remaining very patchy within 10 miles
from the SD County coast through 07z before expanding north into
Orange County and inland up to the eastern valleys. VIS 0-5SM in
valleSteweyys east of I-15 in SD County and elevated coastal terrain
where cigs reach. Scatter to beaches 15-17z Mon.

Mountains/Deserts...VFR conditions are expected through Sunday
evening with high clouds AOA 10 kft MSL. Gusty onshore winds through
desert slopes and San Gorgonio Pass into the Coachella Valley
bringing gusts 20-25 kts this afternoon, after 00z Mon. These winds
will begin to gradually weaken beginning around 06-09Z Mon.

&&

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

&&

.BEACHES...
Elevated surf and strong rip currents continue at area beaches into
next week. Surf of 3-6 feet and sets to 7 feet are expected at south-
facing beaches. San Diego County Surf will be slightly lower but,
hazardous swimming conditions with high rip current and longshore
current risk will still exist. See the Beach Hazards Statement for
more details.

&&

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

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through Friday evening for Orange County
     Coastal Areas-San Diego County Coastal Areas.

&&

$$

PUBLIC...MM
AVIATION/MARINE/BEACHES...Westerink