654
FXUS63 KILX 172307
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
607 PM CDT SAT OCT 17 2026
KEY MESSAGES
- FROST WILL BE LIKELY ACROSS AREAS GENERALLY EAST OF I-55
TONIGHT. SENSITIVE OUTDOOR PLANTS NEED TO BE PROTECTED THIS
WEEKEND IN ORDER TO AVOID DAMAGE. A FROST ADVISORY IS IN
EFFECT TONIGHT NEAR AND EAST OF A BLOOMINGTON...TO
DECATUR...TO TAYLORVILLE LINE.
- TEMPERATURES WILL BEGIN A WARMING TREND. HIGHS TOMORROW WILL
BE IN THE MID 60S, BUT BY MIDWEEK TEMPERATURES WILL BE BACK
WELL ABOVE NORMAL WITH HIGHS IN THE UPPER 70S, NEARING 80.
DISCUSSION
ISSUED AT 220 PM CDT SAT OCT 17 2026
HIGH PRESSURE IS SET UP OVER THE CENTRAL PART OF THE UNITED STATES.
THIS WILL BRING CLEAR SKIES AND DRY WEATHER TO IL FOR THE NEXT
SEVERAL DAYS TO A WEEK. WINDS HAVE ALSO BECOME VERY LIGHT TO NEAR
CALM. THE MAIN FOCUS OF THIS FORECAST IS THE TEMPERATURES AND THE
FROST POTENTIAL TONIGHT. TEMPERATURES WILL DROP DOWN INTO THE MID
30S TONIGHT. WITH CLEAR SKIES, LIGHT WINDS, AND COLD TEMPERATURES
FROST FORMATION IS FAVORABLE IN EASTERN IL, FOCUSED EAST OF I-55
TONIGHT. IF RADIATIONAL COOLING OVERPERFORM, TEMPERATURES COULD
GET NEAR FREEZING IN SOME SPOTS. THERE IS A FROST ADVISORY IN
EFFECT FOR THAT AREA FROM 1AM TO 9AM TOMORROW MORNING. THERE
COULD BE SOME VERY LOCALIZED, PATCHY FROST THAT DEVELOPS IN
WEST-CENTRAL IL IN THE LOWEST/COOLEST SPOTS.
TEMPERATURES WILL BEGIN A WARMING TREND TOMORROW. HIGHS TOMORROW
WILL BE IN THE MID 60S, BUT BY MIDWEEK TEMPERATURES WILL BE BACK
WELL ABOVE NORMAL WITH HIGHS IN THE UPPER 70S, NEARING 80. NORMALS
FOR THIS TIME OF YEAR IS AROUND 65-69 DEGREES ACROSS CENTRAL AND
SOUTHEASTERN IL.
AVIATION /00Z TAFS THROUGH 00Z MONDAY/
ISSUED AT 607 PM CDT SAT OCT 17 2026
VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD. WINDS WILL BE
LIGHT AND VARIABLE OVERNIGHT, INCREASING OUT OF THE SOUTH BY MID
MORNING.
ILX WATCHES/WARNINGS/ADVISORIES
FROST ADVISORY FROM 1 AM TO 9 AM CDT SUNDAY FOR ILZ038-043>046-
052>057-061>063-066>068-071>073.
KEY MESSAGES...COPPLE
DISCUSSION...COPPLE
AVIATION...NMA
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