Monterey Park, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

270
FXUS66 KLOX 100132
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
632 PM PDT Fri May 9 2025

.SYNOPSIS...09/115 PM.

High pressure aloft will continue a warming trend across the
region into Saturday. The hottest temperatures will be away from
the coast into the valleys, foothills, mountains, and deserts.
Closer to the coast, onshore flow with areas of fog will keep
temperatures cooler. Onshore flow will strengthen next week and
bring much cooler conditions with low clouds and fog pushing back
into the valleys. There is a chance of drizzle or light showers
next Tuesday.

&&

.SHORT TERM (TDY-MON)...09/153 PM.

High pressure aloft and weak onshore flow have combined to bring
hot temperatures to inland areas today. Woodland Hills has broken
a daily record with a high of 101 as of 1pm with the potential for
another degree or two before the cooling begins. Even San Luis
Obispo reached 90 today. In stark contrast to that areas near the
beaches were much cooler with highs there only in the 60s and
lingering areas of dense fog.

Expecting a fairly similar day tomorrow with temperatures +/- 2
degrees from today in most areas and the heat advisories will
remain in effect. Certainly a possibility of more broken records
across inland locations (Woodland Hills record is 99 Saturday).
Models are showing a very slight increase in onshore flow in the
afternoon but typically this does not have much impact except
possibly at the beaches. And again some areas of dense fog
expected along the coast.

High pressure weakens Sunday as the next upper low approaches the
Pac NW. However, the air mass is still quite warm and the increase
in onshore flow will mostly occur very late in the afternoon so
inland locations are still expected to reach the upper 80s to mid
90s. This is still 10-15 degrees above normal but not quite
enough for heat advisories. Some gusty winds expected later in the
day across southwest Santa Barbara County and the Antelope Valley

Much cooler weather Monday as the West Coast trough deepens and
extends farther south into California. Low clouds and fog are
expected to push into the valleys by Monday morning and high
temps will drop to 4-8 degrees below normal in most areas and as
much as 10-15 degrees below normal across SLO County. Afternoon
winds may approach advisory levels across the Antelope Valley.

.LONG TERM (TUE-FRI)...09/206 PM.

Overall a cool and breezy week with lots of marine layer stratus
across coast and valleys and even up some of the coastal mountain
slopes. The trough axis is expected to move through the area
Tuesday and while there isn`t much moisture with it, the
combination of strong onshore flow flow and cooling aloft will
create an environment favorable for night and morning drizzle and
even some very light showers. Many ensemble solutions continue to
show some light precip developing Tuesday morning in the San
Gabriel valley up against the foothills, but can`t rule that out
across other coast/valley/south facing mountain areas.

That system moves east Wednesday but weak troughing will continue
the remainder of the week keeping temperatures below normal with a
steady dose of night and morning low clouds and fog.

&&

.AVIATION...10/0131Z.

At 00Z at KLAX, the marine layer was 300 feet deep. The top of
the inversion was 1400 ft with a temp of 30 degrees C.

Low to moderate confidence in TAFs for KSBA, KOXR, KCMA, KSMO,
KLAX, and KLGB. High confidence in VFR conds prevailing for the
remainder of TAFs through the period.

There is a 40% chance of VFR conds prevailing at all coastal sites
south of Point Conception through the period. If cigs do arrive,
timing of flight cat changes may be off by +/- 3 hours and there
is a 40% chance of VLIFR conds.

KLAX...Low confidence in TAF. There is a 40% chance of VFR conds
through the period. If cigs do arrive, timing of flight cat
changes may be off by +/- 3 hours, with a 40% chance of 1/4-1/2SM
FG and VV002 through 17Z Sat. Good confidence any east wind
component will remain below 7 kt.

KBUR...High confidence in TAF.

&&

.MARINE...09/206 PM.

Small Craft Advisory or stronger winds are expected across the
outer waters through the weekend and potentially continuing
through early next week. Winds may drop below advisory levels
again Saturday morning, especially across the outer waters south
of Point Conception, but good confidence in winds increasing back
up to advisory levels by the afternoon hours. There is also a
20-30% chance for shorter lived, localized SCA level winds for
portions of the inner waters south of Point Conception this
evening. Good confidence in winds expanding into the Santa Barbara
Channel and the inner waters north of Point Sal each afternoon
and evening starting on Saturday. There is a 20-50 percent chance
of Gales in the Saturday night through Monday or Tuesday time
frame with the lowest potential across the inner waters south of
the Channel Islands.

Low clouds and dense fog will be common across the coastal waters
into this morning and again tonight into early Saturday morning.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Heat Advisory remains in effect until 9 PM PDT Saturday for
      zones 88-343-351-352-356>358-369>375-548. (See LAXNPWLOX).
PZ...Small Craft Advisory in effect until 9 PM PDT this evening
      for zone 645. (See LAXMWWLOX).
     Gale Watch in effect from late Saturday night through late
      Monday night for zones 645-670-673-676. (See LAXMWWLOX).
     Gale Watch in effect from Sunday afternoon through Monday
      evening for zone 650. (See LAXMWWLOX).
     Small Craft Advisory in effect until 3 AM PDT Sunday for
      zones 670-673-676. (See LAXMWWLOX).

&&

$$

PUBLIC...MW
AVIATION...Lund
MARINE...Munroe
SYNOPSIS...MW/Hall

weather.gov/losangeles

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