Windsor Hills, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

969
FXUS66 KLOX 280555 AAA
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
1055 PM PDT Fri Jun 27 2025

...updated aviation discussion

.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 (FRI-MON)...27/749 PM.

***UPDATE***

No impactful changes to the previous short-term forecast. High
temperatures were generally up from yesterday (except for most of
SLO County) and peaked in the 60s to low 70s along the immediate
coast with marine clouds and onshore winds. Further inland, 80s
to 90s were more common. Several stations in the Antelope Valley
reported 97 degrees, which is three above seasonal normal. GOES
shows the clouds returning to the Ventura County coast already,
and more thinly to the central coast.

***From Previous Discussion***

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...28/0554Z.

At 0512Z at KLAX, the marine layer was 1300 ft deep. The top of
the inversion was at 2900 ft with a temperature of 24 deg C.

High confidence in VFR TAFs for KPRB, KPMD and KWJF.

Moderate confidence in remaining TAF sites, except low to moderate
confidence for KBUR and KVNY. Timing of arrival of cigs and
flight cat changes may be off +/- 2 hours. Minimum flight cat may
be off by one, with lower confidence in minimum flight cats at
KBUR and KVNY. There is a 30% chance cigs do not reach KBUR nor
KVNY tonight and VFR conds prevail.

KLAX...Moderate confidence in the 06Z TAF. High confidence in
cigs persisting thru about 17Z Sat. Low clouds and mostly IFR cigs
should move back into the airfield by 05Z Sat evening. Moderate
confidence in timing (+/- 2 hours) and minimum cig height (+/- 300
feet). Moderate confidence that any southeast winds will stay
under 6 knots.

KBUR...Low to moderate confidence in the 06Z TAF. There is a 30%
chance cigs do not move into the airfield tonight and VFR conds
prevail. If cigs arrive, there is a 40% chance of cigs 002-004.
Timing of arrival may be off +/- 2 hours.

&&

.MARINE...27/745 PM.

High confidence in unseasonably quiet conditions through at least
Sunday. NW winds will increase Sunday afternoon through Friday
from the Central Coast to San Nicolas Island. Lower confidence in
the forecast beyond Sunday, but there is a chance of conditions
returning to seasonal SCA levels as early as Monday afternoon (20%
chance), but chances increase by Wednesday. There is a low but
present chance of reaching Gales Thursday and Friday.

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

&&

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

&&

$$

PUBLIC...Thompson/jld
AVIATION...Sirard
MARINE...Kittell/Lewis
SYNOPSIS...Lewis

weather.gov/losangeles

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