Champaign, Illinois 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

307
FXUS63 KILX 061044
AFDILX

Area Forecast Discussion...Updated Aviation
National Weather Service Lincoln IL
Issued by National Weather Service St Louis MO
544 AM CDT Fri Jun 6 2025

.KEY MESSAGES...

- Despite daily rain chances through Monday, most of central
  Illinois will experience below normal rainfall over the next 7
  days. Normal rainfall this time of year is about 1 inch per
  week. The exception being in areas near and south of I-70 where
  there is a 30-50% chance for above normal rainfall.

- Afternoon highs generally in the 70s and overnight lows around
  60. The normal high this time of year is around 82 F.

- Any storms that do develop between now and Monday have a low
  risk (< 5% probability) of severe weather and/or flash flooding.

- Smokey conditions are forecast again today. The IL EPA has
  central IL in the yellow and orange categories. Orange being the
  worst being unhealthy for sensitive groups.

&&

.UPDATE...
Issued at 509 AM CDT Fri Jun 6 2025

Dense fog is now encompassing a larger portion of central and
west-central Illinois than previously forecast, with skies
clearing amidst weak surface winds. A Dense Fog Advisory is now
in effect through 9 AM this morning, by which point temperatures
will warm enough to scour out any lingering fog.

MRB

&&

.DISCUSSION...
Issued at 155 AM CDT Fri Jun 6 2025

Daily rain chances continue through Monday night. Today is
focused south of I-72, near I-70, then area-wide for the
remainder. Today and tomorrows showers and thunderstorms are
associated with a passing low pressure system that will cut across
central IL overnight tonight. The SPC has us in a marginal risk
for severe weather today (I-70 & south) and tomorrow (I-72 and
south). Both days have a risk for localized damaging winds.

We see a conveyor belt pattern of cold frontal passages into the
new week. Sundays showers and thunderstorms are associated with a
cold front that will travel across the region, not far behind the
first low pressure system of the weekend. Then following this
FROPA, another cold front is set to move through Monday, bringing
us yet another round of rainy weather. BUT have no fear... Tuesday
into much of the day Thursday, we get a break from the wetter
routine, as a high pressure sets up over the area Tuesday morning.
More rain chances return for next weekend.

Temperatures will be dampened by the increased cloud coverage
from the multiple rounds of showers and thunderstorms. Highs look
to be in the upper 70s to low 80s through Wednesday. They will
warm to the low to mid 80s by late week. Lows will generally be in
the upper 50s to low 60s through much of the next week. Tuesday
night will be the chilliest with the lows in the low 50s to near
60.

Copple

&&

.AVIATION...  (For the 12z TAFs through 12z Saturday Morning)
Issued at 543 AM CDT Fri Jun 6 2025

Dense fog became more widespread over the region, particularly in
central and west-central Illinois, overnight with IFR to LIFR
conditions developing. The combination of increased temperatures
after sunrise and incoming high clouds will bring fog to an end by
14Z, leading to generally VFR conditions through the rest of the
forecast period. Termials closer to south-central Illinois may be
grazed by a few showers this afternoon, though thunderstorms still
appear unlikely with energy relegated far to the south of the TAF
sites.

Another threat for fog may materialize overnight tonight, but will
hinge on cloud cover and how much we warm today. As of now, no fog
is included in the TAFs but this will be monitored.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Dense Fog Advisory until 9 AM CDT this morning for ILZ040>057-
061>063.

&&

$$