Peotone Weather
National Weather Service Forecast for: Peotone, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: Tue, 17-Sep-2019 5:15pm CDT

Peotone, IL
 
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday

Sunday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Monday

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Hi 79 °F Hi 83 °F Hi 86 °F Hi 86 °F Hi 81 °F Hi 78 °F Hi 77 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Sunday
Night
Sunday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Monday
Night
Monday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 60 °F Lo 60 °F Lo 63 °F Lo 65 °F Lo 65 °F Lo 61 °F Lo 58 °F  

 

This Afternoon
 
Mostly sunny, with a high near 79. East wind around 5 mph.
Tonight
 
Mostly clear, with a low around 60. East wind around 5 mph.
Wednesday
 
Sunny, with a high near 83. Southeast wind around 5 mph.
Wednesday Night
 
Mostly clear, with a low around 60. Southeast wind around 5 mph.
Thursday
 
Sunny, with a high near 86. South southeast wind 0 to 5 mph.
Thursday Night
 
Partly cloudy, with a low around 63.
Friday
 
Mostly sunny, with a high near 86.
Friday Night
 
Mostly cloudy, with a low around 65.
Saturday
 
A chance of showers and thunderstorms after 7am. Partly sunny, with a high near 81.
Saturday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 65.
Sunday
 
Showers and thunderstorms likely. Mostly cloudy, with a high near 78.
Sunday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 61.
Monday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 77.
Monday Night
 
A slight chance of rain showers. Partly cloudy, with a low around 58.

 

Forecast from NOAA-NWS for Peotone, IL.

094
FXUS63 KLOT 171933
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
233 PM CDT Tue Sep 17 2019

.SHORT TERM...
231 PM CDT

Through Wednesday night...

Upper ridging is overhead while surface high pressure is off to
the east this afternoon, though a weak ridge axis extends westward
across the area. Main concern for tonight will be fog development
which looks to be less extensive than recent nights. Will carry
patchy fog for mainly northern areas and along the lakeshore from
Chicago north. Upper ridging will remain across the region
Wednesday keeping warm air in place once again. Expect highs in
the low to mid 80s. A lake breeze may set up and work inland,
especially across the northern Chicago suburbs, keeping lakefront
areas of Illinois in the 70s. An upper trough will move northeast
across the northern Plains Wednesday shunting the ridge eastward
while a weak cool front approaches from the northwest. Should see
an influx of cloud cover across north-central Illinois Wednesday
night with chances for rain likely holding off to the northwest of
the forecast area.

MDB

&&

.LONG TERM...
231 PM CDT

Thursday through Tuesday...

The main weather story for the later half of the week will be the
very warm temperatures expected across the area, followed by what
looks to be a period of inclement weather over the weekend.

The period will start on the warm side for both Thursday and
Friday as a large mid-level ridge axis remains centered across the
region. Temperatures over the area both days still look likely to
top out well into the 80s, which is about 10 degrees above average
for this time of year. Active weather, with showers and
thunderstorms, is likely remain confined to the west-
northwestern periphery of the mid-level ridge through this
period. This would favor the Plains and Upper Midwest to our west-
northwest. I cannot totally rule out the possibility for a few
weakening storms moving into far northern IL Friday morning, but
at this time, this potential looks low.

A potent upper trough over the western CONUS is expected to
transition eastward over the central and northern Plains by
Saturday. As it does so, strong height falls will overspread the
Upper Midwest and western Great Lakes, essentially resulting in a
break down of the mid-level ridge across the area. This should
act to focus active weather into our region this weekend. A
surface cold front is expected to move across the area sometime
Sunday or Sunday night. However, prior to its passage, it appears
possible that some tropical moisture associated with the remnants
of Imelda could shift northeastward over our area. This could
thus set the stage for a period or two of thunderstorms with heavy
rainfall, especially Saturday night into Sunday.

It appears that the orientation of the surface front could remain
somewhat parallel to the southwesterly flow pattern aloft, which
would favor a slow eastward movement across the area. For this
reason this pattern could become favorable to support a couple
periods of training thunderstorms later in the weekend. However,
given this is still several days away, and timing differences in
the frontal arrival are apparent in forecast guidance, confidence
on the specific areas favorable for heavy rain remains low at this
time. This will certainly be a period to keep an eye on though,
especially with the ongoing flooding across northern IL.

Following this active period of weather, it appears things could
quiet down for a couple of days early next week before more active
weather returns later in the week.

KJB

&&

.AVIATION...
For the 18Z TAFs...

Surface high pressure is off to the east of the terminals this
afternoon. Low cloud cover has mostly eroded, though day time
heating has triggered some stratocu in the 2000-3000 ft range but
this should remain few to scattered in coverage. East to
southeast winds have set up in the 5 to 10 kt range and will
continue through the afternoon and diminish to 5 kt or less
overnight. Not expecting much in the way of fog or stratus
development over land tonight with high pressure well to the east.
Some patchy/shallow fog could develop at RFD/DPA. South to
southeast winds develop for Wednesday with VFR expected.

MDB

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...None.
IN...None.
LM...Dense Fog Advisory...IL nearshore waters until 4 PM Tuesday.

&&

$$

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NWS LOT Office Area Forecast Discussion