Bloomington, Illinois Weather Forecast Discussion

797
FXUS63 KILX 170950
AFDILX
Area Forecast Discussion...Updated Aviation
National Weather Service Lincoln IL
450 AM CDT Wed Sep 17 2025
.KEY MESSAGES...
- Hot and dry weather continues through Friday, with daytime
  highs topping out in the upper 80s to low 90s.
- A couple upper systems will bring the return of precipitation
  (20-40% chance) and temperatures cooling slightly starting over
  the weekend.
&&
.DISCUSSION...
Issued at 204 AM CDT Wed Sep 17 2025
Dry and hot conditions continue yet again today and tomorrow. Light,
east winds will be in place, which should help mitigate the fire
danger. This pattern will hold until a slow moving upper wave starts
to break down the ridging as we go into Friday. This upper wave will
bring daily chances for showers and thunderstorms through the
start of the new week. Highs will be around the mid 80s to low
90s through Saturday. We could see some slightly cooler
temperatures to start out the new week, with highs in the low to
upper 80s beginning Sunday. Lows will stay mainly in the 60s for
the next week. The Climate Prediction Center continues to
advertise a 60-70% chance for above normal temperatures through
the end of September. For reference, normal temperatures by the
last day of September should be in the middle 70s.
With these daily chances for rain, the rainfall amounts will not be
impressive. Drought has effectively settled in across the forecast
area. What that means for central and southeastern IL: harder to get
any meaningful rainfall without a potent/impressive low pressure
system. There is generally a 20-40% chance of showers and
thunderstorms going into next week starting Friday. The greatest
probability for widespread showers and/or thunderstorms is on Sunday
night with a 30-40% chance. Despite the daily chances for rain,
there is only a 20-30% chance of more than an inch of rain from now
until 00z next Thursday (7pm Wednesday, 9/24) based off the LREF.
Copple
&&
.AVIATION...  (For the 12z TAFs through 12z Thursday Morning)
Issued at 450 AM CDT Wed Sep 17 2025
VFR conditions continue through the 12z period with light
northeast winds.
Copple
&&
.ILX WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$

NWS ILX Office Area Forecast Discussion