Area Forecast Discussion
Issued by NWS Central Illinois

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192
FXUS63 KILX 091113
AFDILX

Area Forecast Discussion...Updated Aviation
National Weather Service Lincoln IL
613 AM CDT Thu Oct 9 2025

.KEY MESSAGES...

- Low temperatures will dip into the 30s across parts of central
  and southeast Illinois this morning and tomorrow morning.

- The highest probability (30-50% chance) for readings below 38F
  and perhaps patchy frost will be focused along/east of I-57
  tomorrow morning.


&&

.DISCUSSION...
Issued at 155 AM CDT Thu Oct 9 2025

High pressure has shifted to the northeast. Today will be another
pleasant autumn day, with highs in the upper 60s to low 70s. Lows
tonight around 35-45 degrees. The next slight chance for showers
north of I-70 arrives Friday as a weak disturbance passes over the
Great Lakes region. Otherwise, a basically dry forecast is in
store for the next week.

Temperatures this morning may dip down into frost development
territory for some colder locations. The NBM is showing a 30-50%
chance of dipping below 38 degrees east of I-57 for tomorrow
morning. These temperatures along with good radiational cooling,
frost formation is possible in the coldest locations.

Ridging holds in place through the weekend. Daytime temperatures will
increase back into the upper 70s for the weekend, then possibly
back into the 80s by mid week next week. Lows will also increase
back into the 50s by the weekend.

Copple

&&

.AVIATION...  (For the 12z TAFs through 12z Friday Morning)
Issued at 613 AM CDT Thu Oct 9 2025

VFR conditions to continue through tonight, with only some high
clouds beginning to move in from the west overnight. Easterly
winds gradually trend toward the southeast.

Geelhart

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$