773
FXUS63 KILX 021032
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
532 AM CDT FRI OCT 2 2026
KEY MESSAGES
* LINGERING MORNING SHOWERS SOUTH OF I-70 WILL TAPER OFF BY
MIDDAY AS COOLER, DRIER AIR FILTERS INTO THE REGION BEHIND A
COLD FRONT.
* A BENIGN FALL PATTERN BRINGS DRY CONDITIONS, LIGHT WINDS, AND
PLEASANT TEMPERATURES THROUGH THE WEEKEND AND INTO NEXT WEEK.
DISCUSSION
ISSUED AT 148 AM CDT FRI OCT 2 2026
SHORT TERM... (TODAY THROUGH SATURDAY)
AS OF EARLY THIS MORNING, A COLD FRONT HAS PUSHED SOUTHEASTWARD
ACROSS CENTRAL ILLINOIS, CURRENTLY POSITIONED ALONG THE OHIO
RIVER VALLEY AND EXTENDING SOUTHWESTWARD INTO THE MID-
MISSISSIPPI VALLEY. LIGHT POST-FRONTAL RAIN CONTINUES TO LINGER
ACROSS PORTIONS OF SOUTHEAST ILLINOIS WITHIN THE ANAFRONTAL RAIN
BAND. MEANWHILE, A STRONG 1025 MB SURFACE HIGH CENTERED OVER
THE UPPER MIDWEST IS STEADILY BUILDING INTO THE REGION, DRIVING
A NOTABLY COOLER AND DRIER AIR MASS SOUTHWARDS. DEW POINTS IN
THE 60S YESTERDAY WILL DROP INTO THE MID 40S TO LOWER 50S TODAY.
EXPECT LINGERING PRECIPITATION SOUTH OF I-70 TO END BY AROUND
MIDDAY AS DRY AIR ADVECTION CONTINUES. HIGH TEMPERATURES TODAY
WILL TOP OUT IN THE MID 60S TO NEAR 70 UNDER GRADUALLY CLEARING
SKIES.
QUIET WEATHER CONDITIONS WILL PERSIST THROUGH FRIDAY NIGHT AND
SATURDAY AS THE SURFACE HIGH DRIFTS EAST TOWARD NEW ENGLAND
WHILE MAINTAINING A RIDGE AXIS ACROSS CENTRAL ILLINOIS. THIS
SETUP WILL YIELD LIGHT WINDS, SEASONABLE DAYTIME HIGHS IN THE
UPPER 60S TO LOW 70S, AND COOL OVERNIGHT LOWS IN THE 40S.
LONG TERM
(SUNDAY THROUGH NEXT THURSDAY)
AN UPPER-LEVEL SHORTWAVE TROUGH TRAVERSING THE CANADIAN
PRAIRIES WILL TRACK A WEAK SURFACE LOW WELL TO OUR NORTH ON
SUNDAY. MODEL GUIDANCE REMAINS IN GOOD AGREEMENT KEEPING ANY
PRECIPITATION WELL NORTH OF THE LOCAL FORECAST AREA, GENERALLY
ALONG AND NORTH OF THE ILLINOIS/WISCONSIN STATE LINE. WARM AIR
ADVECTION AHEAD OF THIS SYSTEM WILL BRING A BRIEF UPTICK IN
TEMPERATURES ON SUNDAY, BOOSTING AFTERNOON HIGHS INTO THE MID-
TO-UPPER 70S.
IN THE WAKE OF THE LOW, ANOTHER EXPANSIVE SURFACE HIGH
OVERSPREADS THE MIDWEST BY EARLY MONDAY BEFORE SETTLING ALONG
THE MID-ATLANTIC COAST BY MIDWEEK. HIGHS MONDAY AND TUESDAY WILL
REMAIN NEAR TO SLIGHTLY BELOW NORMAL IN THE UPPER 60S AND LOWER
70S WITH LOWS CONSISTENTLY IN THE 40S. BY WEDNESDAY AND
THURSDAY, RETURN SOUTHWESTERLY FLOW AROUND THE BACKSIDE OF THE
DEPARTING RIDGE WILL INITIATE A MORE SUSTAINED WARMING TREND
ACROSS THE REGION. AFTERNOON HIGHS ARE EXPECTED TO REACH THE
UPPER 70S TO LOW 80S THROUGH THE LATTER HALF OF NEXT WEEK WITH
PERSISTENT DRY CONDITIONS EXPECTED.
AVIATION /12Z TAFS THROUGH 12Z SATURDAY/
ISSUED AT 530 AM CDT FRI OCT 2 2026
A COLD FRONT HAS PUSHED SOUTHEAST OF ILLINOIS EARLY THIS
MORNING, LEAVING A NORTH/NORTHEAST BREEZE IN ITS WAKE. SOME
GUSTS OF 18-20 KTS WILL BE POSSIBLE FROM MID MORNING THROUGH
THE AFTERNOON. LOW CEILINGS HAVE RECENTLY SCATTERED OUT AT PIA
AND WILL GRADUALLY SCATTER OUT FROM THE NORTHWEST THROUGH THE
MORNING, WITH VFR CONDITIONS PREVAILING FROM AROUND MID TO LATE
MORNING THROUGH THE REMAINDER OF THE PERIOD.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
KEY MESSAGES...DEUBELBEISS
DISCUSSION...DEUBELBEISS
AVIATION...DEUBELBEISS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page