Peotone Weather
National Weather Service Forecast for: 2 Miles SE Peotone, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: Thu, 02-Feb-2023 4:15am CST

Peotone, IL
 
  Thursday

Thursday: Sunny
Sunny
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Partly Sunny
Partly Sunny
Tuesday

Tuesday: Mostly Cloudy then Slight Chance Rain Showers
Mostly Cloudy then Slight Chance Rain Showers
Wednesday

Wednesday: Chance Rain
Chance Rain
  Hi 35 °F ↓ Hi 11 °F Hi 37 °F Hi 41 °F Hi 45 °F Hi 44 °F Hi 44 °F
 
Overnight

Overnight: Clear
Clear
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Mostly Cloudy
Mostly Cloudy
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Cloudy then Slight Chance Rain Showers
Cloudy then Slight Chance Rain Showers
Tuesday
Night
Tuesday Night: Chance Rain
Chance Rain
 
Lo 18 °F Lo -3 °F ↑ Lo 5 °F Lo 30 °F Lo 25 °F Lo 38 °F Lo 31 °F  

 

Overnight
 
Clear, with a low around 18. Southwest wind around 10 mph.
Thursday
 
Sunny. High near 35, with temperatures falling to around 28 in the afternoon. West wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
 
Mostly clear. Low around -3, with temperatures rising to around 0 overnight. Wind chill values as low as -17. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
 
Sunny, with a high near 11. Wind chill values as low as -20. West northwest wind 5 to 10 mph.
Friday Night
 
Partly cloudy, with a low around 5. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
 
Mostly sunny, with a high near 37.
Saturday Night
 
Mostly cloudy, with a low around 30.
Sunday
 
Partly sunny, with a high near 41.
Sunday Night
 
Partly cloudy, with a low around 25.
Monday
 
Partly sunny, with a high near 45.
Monday Night
 
A slight chance of rain showers after midnight. Cloudy, with a low around 38.
Tuesday
 
A slight chance of rain showers after noon. Mostly cloudy, with a high near 44.
Tuesday Night
 
A chance of rain. Mostly cloudy, with a low around 31.
Wednesday
 
A chance of rain. Mostly sunny, with a high near 44.

 

Forecast from NOAA-NWS for 2 Miles SE Peotone, IL.

000
FXUS63 KLOT 021122
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
522 AM CST Thu Feb 2 2023

.SHORT TERM...
Issued at 249 AM CST Thu Feb 2 2023

Through Friday...

A brief, but potent shot of very cold air will bring dangerous
wind chills to northern Illinois late tonight into Friday morning.

Before the cold, one more relatively mild day is on tap for
today. Have bumped temps up a bit, particularly far the southern
CWA where little to no snow remains. Anticipate a large range in
high temps today from the low/mid 40s far south to the upper
20s/near 30 over the deepest snowpack near the WI border. Arctic
cold front will enter northern IL late this afternoon, likely
resulting in temps falling across far north prior to sunset.

The brunt of the cold air will actually remain well north and
northeast of our area tonight and Friday, but even get sideswiped
by this powerful lobe of the tropospheric polar vortex will pack
a formidable cold punch. Both the GFS and ECMWF have lows at or
just below -10F across most of our northern CWA early Friday
morning. Backwards trajectories show our air mass early Friday
morning is originating from around Lake Winnipeg, where current
temps are in the teens to around 20 below zero. Have trended our
forecast lows colder for late tonight into Friday morning, close
to, but not quite as cold as the GFS/ECMWF. It is worth noting the
GFS/ECMWF performed quite well with the bitter cold temps a
couple of nights ago.

Strongest winds tonight will likely be this evening, but even if
winds diminish to around 10 mph across northern Illinois after
midnight as forecast, that`s still is enough wind to push wind
chills down into the 20 to 25 below zero range. For this reason,
have coordinated the issuance of a wind chill advisory for late
tonight into Friday morning with MKX and DVN for these dangerous
wind chills.

Center of the Arctic high will move overhead Friday afternoon,
resulting in winds diminishing further Friday morning and likely
becoming light and variable Friday afternoon. Decreasing winds
and slowly rising temperature should allow wind chills to "warm"
above advisory criteria (-20F) by mid morning, though air temps
over the deeper snowpack may struggle to even reach zero by noon
Friday!

Have maintained some slight chance pops for snow showers over far
northeast Porter County Friday morning, but it would appear the
best chances of any accumulating lake effect snow will remain
east of our CWA.

- Izzi

&&

.LONG TERM...
Issued at 249 AM CST Thu Feb 2 2023

Friday night through Wednesday...

The Arctic air will depart Friday night as quickly as it arrives
tonight. Mid-upper level cloudiness will quickly overspread the
area Friday night as winds become southerly and increase through
the night. This should result in temps rising 10 or more degrees
from Friday evening lows to early morning Saturday readings.

A much milder pattern is expected over the weekend and through the
middle of next week. Snowpack should be pretty resilient this
weekend and temper the warm up a bit, but quicker snow melt is
expected early next week when the mild temps will be accompanied
by above freezing dewpoints. Still a lot of details to be worked
out, but rain chances look to be on the rise Tuesday into
Wednesday next week as one or two shortwave troughs could affect
the area. Generally above average temperatures look like they
could persist beyond this 7 day forecast and through the middle of
the month.

- Izzi

&&

.AVIATION...
For the 12Z TAFs...

Cold front will move across the terminals this afternoon with
winds shifting to northwest behind the front and likely becoming
rather gusty this afternoon and especially this evening. Gusts
should routinely be in the 20-25kt range this evening with a few
rogue higher gusts approaching 30 kt possible. Winds and gustiness
is expected to ease overnight into early Friday morning. There
will probably be a few hours of a VFR CIGS near and just behind
the cold front this afternoon, otherwise no impactful terminal
weather is expected.

- Izzi

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Wind Chill Advisory...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-
     ILZ011-ILZ012-ILZ013-ILZ103...11 PM Thursday to 10 AM
     Friday.

IN...None.
LM...Small Craft Advisory...LMZ740-LMZ741-LMZ742...6 PM Thursday to
     10 AM Friday.

     Small Craft Advisory...LMZ743-LMZ744-LMZ745...3 PM Thursday to 3
     PM Friday.

&&

$$

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NWS LOT Office Area Forecast Discussion