404  
FXUS63 KILX 030520  
AFDILX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LINCOLN IL  
1220 AM CDT SAT OCT 3 2026  
   
KEY MESSAGES  
 
- A BENIGN FALL PATTERN WILL BRING DRY CONDITIONS, LIGHT WINDS,  
AND PLEASANT TEMPERATURES THIS WEEKEND AND MUCH OF NEXT WEEK.  
 
 
   
DISCUSSION  
 
ISSUED AT 141 PM CDT FRI OCT 2 2026  
 
HIGH PRESSURE WILL BUILD INTO THE GREAT LAKES REGION TONIGHT INTO  
SATURDAY, PROVIDING SUBSIDENCE AND COOLER NORTHEASTERLY FLOW FOR  
CENTRAL IL TO PROVIDE FOR MOSTLY CLEAR SKIES AND SEASONABLY COOL  
TEMPERATURES. LOWS TONIGHT LOOK TO REACH THE MID 40S NEAR AND NORTH  
OF I-72 TO AROUND 50 SOUTH OF I-70. HIGHS SATURDAY SHOULD BE MAINLY  
IN THE LOWER 70S.  
 
A MINOR UPTICK IN TEMPERATURES IS EXPECTED FOR SUNDAY AS A SHORTWAVE  
PASSING BY TO THE NORTH PUSHES A WEAK COLD FRONT TOWARD IL SUNDAY,  
DISRUPTING THE COOL ADVECTION AS WINDS TURN SOUTHERLY BRIEFLY.  
MODELS CONTINUE TO KEEP ALL PRECIPITATION TO THE NORTH OF CENTRAL IL  
WITH THIS FEATURE. LOWS SATURDAY NIGHT LOOK TO BE UP A FEW DEGREES  
OVER MOST OF THE AREA WITH UPPER 40S TO AROUND 50. HIGHS SUNDAY LOOK  
TO BE AROUND THE MID TO UPPER 70S.  
 
ANOTHER EXPANSIVE SURFACE HIGH MOVES INTO THE GREAT LAKES REGION  
MONDAY AND TUESDAY AND EXITS TOWARD THE MID-ATLANTIC COAST MIDWEEK.  
THIS WILL ADVECT COOLER AIR INTO CENTRAL IL MONDAY AND TUESDAY FOR  
HIGHS MAINLY IN THE LOWER 70S, THEN SOUTH TO SOUTHWEST FLOW BEHIND  
THE DEPARTING HIGH WILL RAISE HIGHS TO NEAR 80 FOR WEDNESDAY THROUGH  
FRIDAY. UNDER THE INFLUENCE OF LIGHT WINDS AND CLEAR SKIES WITH THE  
HIGH PRESSURE NEARBY, THE COLDEST LOWS OF THE UPCOMING WEEK ARE  
FORECAST FOR MONDAY NIGHT, WITH LOWER TO MID 40S ESTIMATED AT THIS  
TIME. NO PRECIPITATION IS FORECAST THROUGH THE END OF NEXT WEEK.  
 
 
   
AVIATION /06Z TAFS THROUGH 06Z SUNDAY/  
 
ISSUED AT 1219 AM CDT SAT OCT 3 2026  
 
HIGH PRESSURE IS CENTERED OVER THE GREAT LAKES TONIGHT. LIGHT  
WINDS UNDER 10 KT WILL BE IN PLACE THROUGH THE PERIOD UNDER THE  
INFLUENCE OF THIS HIGH, FAVORING A NE/ENE DIRECTION OVERNIGHT,  
THEN VEERING SLIGHTLY TO THE ESE/SE DURING THE DAY SATURDAY. VFR  
CONDITIONS ARE EXPECTED THROUGH THE PERIOD.  
 
 
   
ILX WATCHES/WARNINGS/ADVISORIES  
 
NONE.  
 
 
 
 
 
KEY MESSAGES...37  
DISCUSSION...37  
AVIATION...DEUBELBEISS  
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