Peotone Weather

National Weather Service Forecast for: 2 Miles SE Peotone, IL Issued by: National Weather Service Chicago/Romeoville, IL

Updated: Wed, 31-May-2023 10:11am CDT

- Select Forecast - Peotone, IL Manteno, IL Beecher, IL Monee, IL Kankakee, IL Willmington, IL Braidwood, IL Manhattan, IL OakForest, IL Stelle, IL Ottawa, IL Amboy, IL Byron, IL Rockford, IL Quad Cities, IL Champaign/Urbana, IL Peoria, IL Bloomington, IL Springfield, IL Carbondale, IL Vienna, IL Culver, IN

Peotone, IL

Today Mostly Sunny then Scattered Showers And T-Storms Thursday Chance Showers And T-Storms Friday Sunny Saturday Mostly Sunny Sunday Sunny Monday Mostly Sunny Tuesday Mostly Sunny then Slight Chance Showers And T-Storms   Hi 89 °F ↓ Hi 89 °F Hi 91 °F Hi 91 °F Hi 86 °F Hi 84 °F Hi 81 °F     Tonight Scattered Showers And T-Storms then Partly Cloudy Thursday Night Chance Showers And T-Storms then Mostly Clear Friday Night Mostly Clear Saturday Night Mostly Clear Sunday Night Mostly Clear Monday Night Partly Cloudy Tuesday Night Slight Chance Showers And T-Storms then Partly Cloudy   Lo 65 °F Lo 64 °F Lo 62 °F Lo 62 °F Lo 57 °F Lo 59 °F Lo 53 °F

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

000
FXUS63 KLOT 311127
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
627 AM CDT Wed May 31 2023

.SHORT TERM...
Issued at 250 AM CDT Wed May 31 2023

Through Thursday...

Near term forecast focus is on isolated to scattered afternoon
and early evening showers and thunderstorms both today and
Thursday, as well as a continuation of very warm summerlike
temperatures. On an interesting climate note, Chicago O`Hare has
only received 0.42 inches of rain for the entire month of May,
ranking this as the second driest May in observed Chicago weather
history. We would slip down the list however, if an isolated storm
were to bring O`Hare more than 0.15 inches later today in the
final hours of the month.

Early morning surface analysis depicts high pressure to our east
across the mid-Atlantic and Northeastern states, and a weak trough
of low pressure to our west across the Plains. Locally, light
south to southeast winds have gradually increased low-level
moisture across the region as depicted by surface dew points in
the mid-upper 50s. This better supply of low-level moisture will
set the stage for isolated to scattered shower and thunderstorm
development by this afternoon, as the higher dew points will
contribute to weak capping and greater diurnal conditional
instability. With relatively light column winds and no substantial
larger scale forcing available, convective initiation will likely
be limited, and likely focused along the lake breeze and other
more subtle convergent boundaries. Given the lack of stronger
shear, evolution and coverage may become somewhat messy later this
afternoon and early evening as individual storm outflows serve as
forcing for additional development. Slow cell movement may allow
for some decent downpours where it rains, though precip will
likely be hit and miss with many areas not seeing any meaningful
rainfall. Coverage should wane this evening with the gradual loss
of daytime warmth and instability.

A similar scenario is expected Thursday, though with perhaps
somewhat lower coverage of diurnal convection. This may be
particularly the case to the east, as the upper level ridge over
the Northeastern states begins to retrograde to the west across
the Great Lakes region. Rising mid-level heights and associated
mid- level warming may make for slightly stronger capping later in
the day into our Indiana counties, and thus have carried the
lowest pops there.

Otherwise, our stretch of very warm, summerlike temperatures will
continue with afternoon highs in the upper 80s to lower 90s
expected again away from Lake Michigan both today and Thursday.
However, greater cloud coverage and convective outflow from
scattered storms may make for temperatures less uniform across the
area. Highs near the lake shore will be in the 70s both days.

Ratzer

&&

.LONG TERM...
Issued at 206 AM CDT Wed May 31 2023

Thursday night through Tuesday...

Forecast concerns include small chances for precipitation and high
temps.

No significant changes for the extended period. There may be some
lingering and dissipating showers or a few thunderstorms Thursday
evening. There will be one last small chance for a few showers or
thunderstorms Friday, mainly across the western cwa then drier air
will shift precip chances out of the area for the weekend. High
temps are likely to reach into the upper 80s/lower 90s away from
Lake Michigan. The models continue to show a cool front moving
southwest across the area on Sunday though there are differences
regarding how cool the air behind the front will be, with the GFS
the coolest. Then another cool front may move across the area by
midweek. Blended high temps have cooled again, mainly in the 80s
away from the lake, for early next week and those seem fine at
this distance. There may be a chance for a shower or thunderstorm
with these fronts, but the overall pattern remains very dry with
run total QPF amounts from both the ECMWF and the Canadian again
showing only a few tenths of an inch through 240 hours. cms

&&

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

627 AM...Forecast concerns include...

Chance of thunderstorms this afternoon.
Lake breeze/wind directions this afternoon.

Previous forecast remains generally on track. Previous prob
mention is now tempo mention with a chance of thunderstorms this
afternoon across the entire area, including at RFD. Coverage is
still expected to be generally isolated but the main focus this
afternoon may end up being the lake breeze, with the potential
for thunderstorms to develop overhead at ORD/MDW. Timing tweaks
may be needed with later forecasts as trends emerge. Any of the
thunderstorms that form are likely to produce outflow boundaries
which will make wind directions problematic, even if thunderstorms
do not directly impact the terminals. Additional thunderstorms
may develop as outflow boundaries interact with each other. The
threat of thunderstorms will diminish this evening.

Prevailing south/southeast winds are expected across the entire
area today, except when the lake breeze pushes inland, shifting
winds more easterly for ORD/MDW/GYY. Its possible wind directions
become south/southwest briefly this morning. Once the lake breeze
and any outflow boundaries dissipate this evening, light
southeast winds are expected tonight, possibly turning more
southerly by Thursday morning. cms

&&

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

$$

Visit us at weather.gov/chicago

Follow us on Facebook, Twitter, and YouTube at:
www.facebook.com/NWSChicago
www.twitter.com/NWSChicago
www.youtube.com/NWSChicago

NWS LOT Office Area Forecast Discussion