Perris, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

670
FXUS66 KSGX 112011
AFDSGX

Area Forecast Discussion
National Weather Service San Diego CA
111 PM PDT Wed Jun 11 2025

.SYNOPSIS...
Benign weather will through into the end of the week with a
sizable marine layer. High pressure will expand over the desert
southwest by Sunday, leading to slight warming for inland areas. A
weak troughing pattern will take hold by early next week, where
highs will be closer to average. Dry weather continues for the
foreseeable future.

&&

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

.SHORT TERM...
Minor day to day changes will occur through Saturday as high
pressure is kept to the south by a trough that persists along the
coast of the Pacific Northwest. The marine layer will maintain its
depth over the next few days with clouds overnight into the
morning across the valleys, with less clear conditions at the
coast. Patchy fog will occur mainly across the valleys and
elevated coastal terrain. NBM was used for the forecast with
highs in the 90s and lower 100s across the Inland Empire and
desert regions.

High pressure to our south will expand further across the
southwestern part of the country by the weekend. This will lead to
warmer temperatures away from the coast, where highs will go
around 5 to 10 degrees above average. High temperatures will
likely go over 110 degrees across parts of the lower deserts by
Sunday with a 5-25% chance of highs going above 115 degrees across
the Coachella Valley. Confidence is low to moderate in seeing
temperatures approach 100 degrees across parts of the Inland
Empire as well as highs in the lower 90s for other western
valleys. Rising heights will also allow the marine layer to be
suppressed some, so chances for low clouds in the western valleys
will lower. A subtle troughing pattern will take hold by early
next week, though models do struggle a bit with how deep this will
be. The deeper the trough, the greater the cooling and deeper
marine layer. For now, the NBM forecast has been used to show a
slow cooling pattern by early next week with continued dry
weather.

&&

.AVIATION...
102015Z....Coast/Valleys...Low clouds based 1400-1700 feet MSL with
tops to 2100 feet are lingering along the immediate coast in San
Diego County, but conditions are otherwise mostly clear. There is a
40% chance that KSAN/KCRQ will remain BKN-OVC all day, with a 60%
chance for SCT 21-00Z. Low clouds will begin to move inland again
after 00Z today, lowering to 700-1100 ft MSL with reduced vis 0-5 SM
inland and over higher coastal terrain between these levels. Inland
areas scatter out again 16-17Z Thu, 18-20Z for coastal areas, with
only intermittent clearing along the immediate coast again. 20%
chance for KCRQ and KSAN to remain BKN-OVC through the day Thu.

Mountains/Deserts...SCT high clouds and unrestricted vis today and
tonight.

&&

.MARINE...
No hazardous marine conditions are expected today through Monday.

&&

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


&&

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

&&

$$

PUBLIC...APR
AVIATION/MARINE...CP