Peotone Weather
National Weather Service Forecast for: Peotone, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: Fri, 07-Aug-2020 2:16pm CDT

Peotone, IL
 
This
Afternoon
This Afternoon: Sunny
Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Monday

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday

Tuesday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Wednesday

Wednesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Thursday

Thursday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Hi 82 °F Hi 85 °F Hi 89 °F Hi 89 °F Hi 84 °F Hi 85 °F Hi 84 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Partly Cloudy then Slight Chance Showers And Thunderstorms
Partly Cloudy then Slight Chance Showers And T-Storms
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 59 °F Lo 69 °F Lo 73 °F Lo 66 °F Lo 65 °F Lo 66 °F Lo 65 °F  

 

This Afternoon
 
Sunny, with a high near 82. South wind around 5 mph.
Tonight
 
Mostly clear, with a low around 59. South southeast wind around 5 mph.
Saturday
 
Sunny, with a high near 85. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
 
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. South wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
 
A slight chance of showers and thunderstorms. Partly sunny, with a high near 89. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 40%.
Monday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%.
Monday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Tuesday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Tuesday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Wednesday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Thursday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

 

Forecast from NOAA-NWS for Peotone, IL.

000
FXUS63 KLOT 072006
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
306 PM CDT Fri Aug 7 2020

.SHORT TERM...
253 PM CDT

Through Saturday night...

It was another pleasant late summer day across the area with
light winds, mostly sunny skies, and seasonable temperatures in
the low to mid 80s. The weather will remain quiet overnight with
overnight temperatures cooling into the upper 50s and low 60s, and
upper 60s in the Chicago metro.

Some uncertainty remains with regard to precip/thunder potential
tomorrow. Majority of models keep things dry (for the most part),
there is the potential for MCS remnants/outflow to drift south
into the area from Minnesota/Wisconsin, so will maintain at least
some slight chance PoPs for areas mainly along and west of I-39.
Overall, the majority of the area continues to look dry for
Saturday.

The pressure gradient tightens up Saturday as the surface high
shifts slightly to the east. This combined with sufficient mixing
will result in breezy conditions out of the south southwest. This
should help advect warmer and more humid air into the area for the
weekend.

A slow moving shortwave/attendant MCS approaches from Missouri
late Saturday evening with increasing precip chances into the
overnight hours mainly across our far southern zones.

Petr

&&

.LONG TERM...
253 PM CDT

Sunday through Friday...

Long term period looks to start off seasonably very warm to hot
as the upper ridge over the central and southern U.S. briefly
builds northeastward into the region. Southerly flow will Sunday
into Monday will advect increasingly moist air north into the
region with dewpoints likely getting into the 70s later Sunday and
especially on Monday. Cannot totally rule out some convection or
debris cloudiness from convection to our west spilling east into
our CWA Sunday, though most guidance would tend to favor the
greater pretty chances staying south and west of our CWA. No plans
to stray from National Blend of Model (NBM) high temps in the
upper 80s or lower 90s both on Sunday and Monday, but worth noting
that temps could end up a couple/few degrees warmer either day if
convection and/or convective debris are less prominent. Given the
dewpoints forecast to climb into the 70s, overachieving high
temps either day could push heat indices above 100F.

Medium range guidance is in good agreement in moving a strong
shortwave trough/upper low across the Canadian Prairies Sunday and
Monday, reaching Hudson Bay by Tuesday afternoon. Better upper
forcing with this feature is expected to affect the northern Great
Lakes and points northward, but surface low and associated
trailing cold front is likely to sag southward into the area
Monday night into Tuesday. Should see shower/t-storm chances ramp
up later Monday into Monday night with the approach of this
boundary, but given overall forcing looks to be on the weaker end
of the spectrum, its a bit unclear as to how widespread
convection will end up being despite the hot, humid, and unstable
air mass it is likely to encounter.

Cold front will likely stall out either over our southern CWA or
perhaps a bit south of the area Tuesday into Wednesday as Hudson
Bay upper low dissipates and the front becomes increasingly
aligned with the upper flow. Cant rule out some additional
convective chances Tuesday over mainly our southern CWA. Wednesday
and Thursday look pretty likely to be dry, but proximity of the
decaying front precludes lower NBM pop which keeps some low chance
pops going, particularly southern CWA. Temps Tuesday through
Thursday look seasonably warm with highs solidly into the 80s,
though winds off the lake each day should keep it a bit cooler
near the lake. The weak Canadian high pressure that is progged to
move across the Great Lakes midweek providing those cooling lake
breezes looks to move east by weeks end allowing for a return
of southerly flow and gradually warming temps and increasing
humidity again by the end of the week.

Izzi

&&

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

Quiet weather expected through the remainder of the day with FEW
to SCT cumulus around this afternoon. Easterly winds will continue
across the Chicago area terminals this afternoon with south
southeasterly flow elsewhere.

Winds will become quite light, generally out of the south
southeast overnight. The pressure gradient tightens during the day
tomorrow with winds increasing to 10-12kt turning south
southwesterly with occasional stronger gusts.

There remains some uncertainty with regard to precip and thunder
potential on Saturday. Overall conditions are not overly favorable
for thunderstorm development, but remnant outflow/precip from
potential storm complexes could persist into the local area. The
low confidence and potential precludes a formal mention in the TAF
but will continue to be monitored with future updates.

Petr

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...None.
IN...None.
LM...None.
&&

$$

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