Murrieta, California 7 Day Weather Forecast

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FXUS66 KSGX 072025
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
125 PM PDT Sat Jun 7 2025

.SYNOPSIS...
Temperatures warm through the weekend, peaking Monday and
Tuesday, before a slow cooldown into the end of the week. The
marine layer becomes more shallow through mid week, but may
persist for some coastal areas.

&&

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

Another cloudy June day for Southern California with fog and
drizzle observed across many spots this morning as a upper level
low spins off the central coast. Orange County has been slower to
clear today compared to Friday, but will start to see some
improvements while San Diego County is likely to remain socked in,
especially for those within 15 miles from the coastline. This
looks to be the last morning of widespread drizzle with increasing
heights tonight and tomorrow leading to slightly shallower marine
layer Sunday morning. The height increase will be minimal,
however, so it remains possible that a few spots see drizzle
before 10am Sunday. Regardless, another cloudy morning is expected
for nearly all areas west of the mountains with slow clearing
through the early afternoon.

A warming and drying trend sets in through mid week as upper
level ridging builds in over California. The thermal ridge axis
will extend from the Desert Southwest up into the Columbia Basin
on Tuesday, pivoting to southeastern California through Utah on
Wednesday. Subsidence squishes the marine layer and allow
temperatures to quickly warm across the deserts and Coachella
Valley both Tuesday and Wednesday, with a 85% chance of >105F in
the low deserts and Coachella Valley and a 40% chance of >110F,
highs around 5-10 degrees above normal for mid June. Even areas
further west will see a significant warm up, with 90s in the
Inland Empire and upper 80s to low 90s in the San Diego valleys by
Tuesday. For coastal areas, moderate onshore flow along with the
shallow but persistent marine layer should limit significant
warming with temperatures near or just slightly above normal
Tuesday and Wednesday.

Flow aloft turns more zonal as an approaching trough from the coast
of OR moves inland Thursday. This will mark the transition back to
average temperatures/cooler weather for SoCal and a deeper marine
layer as numerous shortwaves move across NorCal through Saturday.
While models differ slightly with the position of a somewhat
stationary upper level low off the coast of Canada this weekend,
troughing looks to persist over California through at least the
weekend and potentially into early next week.

&&

.AVIATION...
072000Z....Coast/Valleys...BKN-OVC low clouds with bases mostly 1200-
2200 ft MSL this afternoon. Partial and intermittent clearing is
expected along the immediate coast in Orange County, with cigs
likely remaining within 15 miles of the San Diego County coast
through the afternoon. Low clouds begin to push inland again after
00z Sun and should fill in the coastal basin around 10Z Sun. Bases
will be mostly 600-1200 ft MSL with vis reductions 3-5 SM in the
valleys and near higher coastal terrain. Low clouds should clear
inland areas through 18Z Sun, with partial and intermittent clearing
along the coast Sun afternoon.

Mountains/Deserts...Mostly clear skies and unrestricted vis into
Sun.

&&

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

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.

&&

$$

PUBLIC...Zuber
AVIATION/MARINE...CO