919
FXUS66 KSGX 011002 AAA
AFDSGX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN DIEGO CA
302 AM PDT MON JUN 1 2026
SYNOPSIS
SLOW WARMING WILL CONTINUE FOR THE INLAND AREAS THROUGH MID WEEK
WITH HIGH TEMPERATURES AROUND 4 TO 8 DEGREES ABOVE AVERAGE FOR
WEDNESDAY AND THURSDAY. THE COAST AND VALLEYS WILL COOL A FEW
DEGREES ON TUESDAY, THEN WARM A FEW DEGREES FOR WEDNESDAY AND
THURSDAY WITH NIGHT AND MORNING COASTAL LOW CLOUDS SPREADING INTO
PORTIONS OF THE VALLEYS LATE EACH NIGHT. A LOW PRESSURE SYSTEM
MOVING INTO THE WESTERN STATES WILL BRING A COOLING TREND FOR
FRIDAY THROUGH NEXT WEEKEND WITH HIGH TEMPERATURES FOR NEXT SUNDAY
FALLING TO A FEW DEGREES BELOW AVERAGE TO AROUND 5 DEGREES BELOW
AVERAGE FOR THE VALLEYS.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
SHORT TERM (TODAY THROUGH WEDNESDAY)
NOT MUCH CHANGE IN HIGH TEMPERATURES IS EXPECTED FOR TODAY WITH
HIGH TEMPERATURES A FEW DEGREES ABOVE AVERAGE. HIGH TEMPERATURES
FOR TODAY WILL RANGE FROM THE MID TO UPPER 60S NEAR THE COAST TO
THE 80S FOR THE INLAND EMPIRE WITH 100 TO 104 FOR THE LOWER
DESERTS.
DEEPENING OF THE MARINE LAYER WILL BRING A FEW DEGREES OF
COOLING FOR THE COAST AND VALLEYS ON TUESDAY WITH MOST AREAS A FEW
TO AROUND 5 DEGREES WARMER ON WEDNESDAY. WEDNESDAY HIGH
TEMPERATURES WILL BE A FEW DEGREES ABOVE AVERAGE FOR THE COAST
AND VALLEYS WITH THE DESERTS AND LOWER ELEVATIONS OF THE MOUNTAINS
5 TO LOCALLY 10 DEGREES ABOVE AVERAGE. HIGH TEMPERATURES ON
WEDNESDAY WILL RANGE FROM THE LOWER 70S NEAR THE COAST TO THE MID
80S TO LOWER 90S FOR THE INLAND EMPIRE WITH 102 TO 106 FOR THE
LOWER DESERTS.
A MARINE LAYER NEAR 2000 FEET DEEP EARLY THIS MORNING WILL DEEPEN
TO AROUND 2500 FEET FOR LATE TONIGHT INTO TUESDAY MORNING, THEN
BEGIN TO DECREASE FOR TUESDAY NIGHT INTO WEDNESDAY MORNING. NIGHT
AND MORNING COASTAL LOW CLOUDS WILL SPREAD INTO THE WESTERN
VALLEYS FOR EARLY THIS MORNING, INTO PORTIONS OF THE INLAND
VALLEYS FOR LATE TONIGHT INTO TUESDAY MORNING, THEN INTO THE
WESTERN VALLEYS FOR LATE TUESDAY NIGHT INTO WEDNESDAY MORNING.
LONG TERM (THURSDAY THROUGH SUNDAY)
FOR FRIDAY THROUGH SUNDAY, A LOW PRESSURE SYSTEM WILL MOVE TOWARD
AND SLOWLY INLAND INTO THE WESTERN STATES BRING STRONGER ONSHORE
FLOW, DEEPENING OF THE MARINE LAYER, AND COOLING FOR SOUTHERN
CALIFORNIA.
NOT MUCH CHANGE IS EXPECTED ON THURSDAY, FOLLOWED BY A GRADUAL
COOLING TREND FOR FRIDAY THROUGH SUNDAY. HIGH TEMPERATURES ON
THURSDAY OF A FEW DEGREES ABOVE AVERAGE FOR COASTAL AREAS TO 4 TO
8 DEGREES ABOVE AVERAGE FOR INLAND AREAS WILL COOL ON SUNDAY TO A
FEW DEGREES BELOW AVERAGE TO AROUND 5 DEGREES BELOW AVERAGE FOR
THE VALLEYS. HIGH TEMPERATURES FOR NEXT SUNDAY WILL RANGE FROM THE
AROUND 70 NEAR THE COAST TO THE UPPER 70S TO MID 80S FOR THE
INLAND EMPIRE WITH THE UPPER 90S FOR THE LOWER DESERTS.
NIGHT AND MORNING COASTAL LOW CLOUDS WILL SPREAD INTO THE WESTERN
VALLEYS FOR EARLY THURSDAY, INTO PORTIONS OF THE INLAND VALLEYS
FOR EARLY FRIDAY, AND ACROSS MUCH OF THE VALLEYS FOR EARLY
SATURDAY AND EARLY SUNDAY.
AVIATION
010930Z...COAST/VALLEYS...LOW CLOUDS BASED AT 1000-1400 FEET MSL
WITH TOPS TO 1800 FEET WILL CONTINUE TO SPREAD INTO WESTERN VALLEYS
THROUGH 14Z. LOCAL VIS REDUCED 3-5SM ALONG HIGHER TERRAIN. SCATTER
OUT EXPECTED BY 16-18Z. LOW CLOUDS WILL MOVE ASHORE AFTER 03Z AND
PUSH FARTHER INLAND OVERNIGHT INTO TUESDAY, LIKELY IMPACTING KONT
AND KSBD. BASES WILL BE AROUND 1200-1600 FEET MSL.
MOUNTAINS/DESERTS...SCT CLOUDS AROUND 10000 FEET MSL OVER MOUNTAINS
19-00Z TODAY, OTHERWISE CLEAR TODAY AND TONIGHT.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH FRIDAY.
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...17
AVIATION/MARINE...MM
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