Peotone Weather
National Weather Service Forecast for: Peotone, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: Wed, 20-Oct-2021 4:15am CDT

Peotone, IL
 
  Wednesday

Wednesday: Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Thursday

Thursday: Slight Chance Rain Showers then Mostly Cloudy
Slight Chance Rain Showers then Mostly Cloudy
Friday

Friday: Mostly Cloudy
Mostly Cloudy
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Rain Showers Likely
Rain Showers Likely
Monday

Monday: Chance Rain Showers
Chance Rain Showers
Tuesday

Tuesday: Slight Chance Rain Showers
Slight Chance Rain Showers
  Hi 73 °F ↓ Hi 59 °F Hi 57 °F Hi 58 °F Hi 58 °F Hi 66 °F Hi 71 °F
 
Overnight

Overnight: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Partly Cloudy then Chance Rain Showers
Partly Cloudy then Chance Rain Showers
Sunday
Night
Sunday Night: Rain Showers Likely
Rain Showers Likely
Monday
Night
Monday Night: Chance Rain Showers
Chance Rain Showers
 
Lo 49 °F Lo 51 °F ↑ Lo 44 °F Lo 38 °F Lo 40 °F Lo 49 °F Lo 53 °F  

 

Overnight
 
Mostly clear, with a low around 49. South wind around 5 mph, with gusts as high as 15 mph.
Wednesday
 
A slight chance of rain showers after 3pm. Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday Night
 
A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms. Mostly cloudy. Low around 51, with temperatures rising to around 56 overnight. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 59. West northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
 
Mostly cloudy, with a low around 44. North northwest wind around 5 mph, with gusts as high as 15 mph.
Friday
 
Mostly cloudy, with a high near 57.
Friday Night
 
Partly cloudy, with a low around 38.
Saturday
 
Sunny, with a high near 58.
Saturday Night
 
A chance of rain showers after 1am. Partly cloudy, with a low around 40.
Sunday
 
Rain showers likely. Mostly cloudy, with a high near 58.
Sunday Night
 
Rain showers likely. Mostly cloudy, with a low around 49.
Monday
 
A chance of rain showers. Partly sunny, with a high near 66.
Monday Night
 
A chance of rain showers. Mostly cloudy, with a low around 53.
Tuesday
 
A slight chance of rain showers. Mostly sunny, with a high near 71.

 

Forecast from NOAA-NWS for Peotone, IL.

000
FXUS63 KLOT 200847
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
347 AM CDT Wed Oct 20 2021

.SHORT TERM...
347 AM CDT

Through Thursday...

An upper-level wave and associated low pressure system will move
in later this afternoon and bring chances for some isolated to
scattered showers this afternoon into Thursday morning. However,
lower level moisture return with this system will be rather poor,
so this will not be a continuous rain, with lots of dry time
likely. Precipitation totals will be less than a tenth of an
inch in most areas. While precipitation should remain light and
scattered in nature, the presence of rather steep mid-level lapse
rates may support a few high based elevated thunderstorms this
afternoon and evening ahead of an approaching cold front. For
this reason we continue to mention some small chances for thunder
in the forecast, though severe storms are not likely.

Scattered showers will continue to be possible into Thursday,
especially in northeastern IL into northwestern IN as a secondary
cold front drops southward down Lake Michigan along the western
periphery of the surface low. Skies look to remain mostly cloudy
on Thursday and the combination of cooler air behind the low and
cloud cover will keep highs in the upper 50s to around 60
degrees.

Yack

&&

.LONG TERM...

Thursday night through Tuesday...

238 AM...Primary forecast concern and challenge is precip chances
and timing for most of the period.

A secondary cold front will be south of the area Thursday evening
as cooler air spreads across the region. There may still be some
lingering showers/sprinkles across the eastern half of the cwa
Thursday evening, but for now have maintained a dry forecast.

Winds will diminish quite a bit by Friday morning as a broad area
of weak high pressure moves across the Great Lakes region. Low
temps by Friday morning may reach into the mid 30s across some
areas of northwest IL but low confidence for cloud cover trends.
If clouds were to clear out, then frost would be possible for
northwest areas Friday morning. It appears there will be a better
chance for frost Friday night into Saturday morning across the
northwest cwa as low temps drop into the lower 30s, along with
light winds. Cloud cover trends are also a concern for this time
period though there appears to be some potential for clearing
skies behind a weak upper wave that will move across the area
Friday afternoon/evening. Maintained patchy frost mention for this
time period but if trends continue to support clearing skies, then
a more widespread frost could be possible.

Saturday looks to be the better day of the weekend with easterly
flow and dry weather expected. A storm system will develop in the
central Plains Saturday night into Sunday. While there still
remains large differences between the most recent ECMWF/GFS
solutions, they do agree on increasing chances for rain and
blended pops are now well into the likely range Sunday and made no
changes. The differences are the GFS lifting the surface low into
the western Great Lakes Monday, ending the precip for the area
while the ECMWF takes the surface low generally east, developing
an upper low that doesn`t shift east of the area until Tuesday.
The uncertainty is high for this time period, not just for precip
chances but also temps. The blended temps, which are mid/upper 60s
Monday and lower 70s Tuesday, could end up being several degrees
too warm. cms

&&

.AVIATION...
For the 06Z TAFs...

1224 AM...Forecast concerns include...

Low chance for isolated thunder this afternoon/evening.
Possible mvfr cigs by daybreak Thursday morning.

Light southerly winds early this morning will increase into the
10-12kt range by mid/late morning with a few gusts possible this
afternoon. Directions will likely favor south/southwest today and
then turn back southerly this evening, though speeds may remain in
the 10kt range. Low level winds begin to increase this evening and
low level wind shear may be needed with later forecasts. A cold
front will move across the area early Thursday morning, shifting
winds more west/southwest. Its behind this cold front, that mvfr
cigs are possible, especially across northwest IL, by daybreak
Thursday morning.

Mid clouds will continue across the area early this morning and
there may be some virga or sprinkles from these mid clouds. There
will be a chance for showers/sprinkles late this afternoon into
this evening, with the best chance likely in the mid evening and
the current vicinity mention seems reasonable. An isolated
thunderstorm is also possible but there remains quite a bit of
uncertainty regarding precipitation coverage and any convective
activity is likely to remain too isolated for mention in the tafs.
cms

&&

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

$$

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