Sepulveda, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

881
FXUS66 KLOX 272051
AFDLOX

Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
151 PM PDT Fri Jun 27 2025

.SYNOPSIS...27/1204 AM.

Night and morning low clouds and fog will affect the coasts and
some valleys, otherwise mostly clear skies are expected across
the area with gusty onshore winds each afternoon. Temperatures
will change little over the weekend and into early next week.

&&

.SHORT TERM (TDY-MON)...27/150 PM.

Overall, 12Z models in good synoptic agreement through the short
term period. At upper levels, the area will remain sandwiched
between high pressure around the 4 Corners areas and an upper low
off the Central California coast. Near the surface, moderate
onshore flow will continue.

Forecast-wise for the short term, no significant issues are
expected. Main challenge will be the extent of the marine layer
stratus and its impact on temperatures. Through Saturday, H5
heights increase slightly as the upper high exerts a bit of
dominance. So, for tonight/Saturday morning, the marine inversion
will be a bit more shallow and inland extent of stratus/fog will
be less. However from Saturday night through Monday, the upper low
offshore will exert dominance and H5 heights will lower and
onshore pressure gradients will increase. So, inversion should
deepen somewhat and stratus/fog will push further inland each
night/morning. Clearing of stratus each afternoon should be pretty
good although the immediate coastal areas could see limited
clearing. Other than the stratus/fog, skies are expected to remain
mostly clear through Monday.

As for temperatures, will anticipate Saturday to be warmest day in
the short term due to higher thicknesses/H5 heights and less
marine influence. However for Sunday and Monday, a slight cooling
trend is expected with increased marine influence and slight
lowering of thicknesses/H5 heights.

As for winds, no noticeable issues are anticipated. Gusty
southwest winds will continue each afternoon/evening across
interior sections with some weak Sundowners each evening. Any
advisory-level winds will remain very localized, if develop at
all.

.LONG TERM (TUE-FRI)...27/150 PM.

For the extended, 12Z models continue to exhibit good synoptic
agreement through the period. The upper low off the Central Coast
will gradually move inland Tuesday through Thursday then a weak
trough will sag across the area on Friday.

Forecast-wise, the benign weather will continue through next week.
With the overall pattern, the marine layer stratus/fog will
continue to widespread each night/morning (pushing well into the
coastal valleys). Due to the moderate to strong onshore flow,
stratus clearing will be on the slow side each day with some beach
areas likely not seeing much sunshine. Outside of the stratus,
skies are expected to remain mostly clear through the period.

As for temperatures, will expect minor day-to-day fluctuations,
mainly at the whims of the marine influence. Overall, highs each
day will be a couple degrees within seasonal normals.

&&

.AVIATION...27/1617Z.

At 16Z at KLAX, the marine layer was 1800 ft deep. The top of the
inversion was at 3200 ft with a temperature of 23 Celsius.

High confidence in VFR TAFs for KPMD and KWJF with seasonally
gusty onshore winds.

Moderate confidence in very similar timing, ceilings, and flight
categories for the next 24 hours and the previous, except for
likely slow/minimal afternoon clearing at KSBA KOXR today.

KLAX...High confidence in ceilings returning tonight. Moderate
confidence in timing (+/- 2 hours) and base height (+/- 300
feet). Moderate confidence in TAF. Moderate confidence that any
southeast winds will stay under 6 knots.

KBUR...60% chance of ceilings returning tonight. If they return,
moderate confidence in timing (+/- 3 hours) and base height (+/-
300 feet).

&&

.MARINE...27/149 PM.

High confidence in unseasonably quiet conditions through at least
Sunday. NW winds will increase Sunday through Thursday from the
Central Coast to San Nicolas Island, returning to seasonal SCA
levels as early as Monday (30% chance) or certainly by Wednesday
(100%) chance. There is a low but present chance of reaching Gales
on Thursday.

Night to morning dense fog is possible through the weekend off
the Central Coast.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...Thompson
AVIATION...Kittell
MARINE...Kittell
SYNOPSIS...Lewis

weather.gov/losangeles

Experimental Graphical Hazardous Weather Outlook at:
https://www.weather.gov/erh/ghwo?wfo=lox