Peotone Weather

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

Updated: Sat, 06-Jun-2020 7:15am CDT

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Peotone, IL

Today Sunny Sunday Sunny Monday Sunny Tuesday Chance Showers And T-Storms Wednesday Showers And T-Storms Likely Thursday Mostly Sunny then Slight Chance Rain Showers Friday Mostly Sunny then Slight Chance Showers And T-Storms   Hi 80 °F ↓ Hi 83 °F Hi 90 °F Hi 89 °F Hi 79 °F Hi 77 °F Hi 73 °F     Tonight Mostly Clear Sunday Night Mostly Clear Monday Night Partly Cloudy Tuesday Night Chance Showers And T-Storms then Showers And T-Storms Wednesday Night Chance Showers And T-Storms Thursday Night Slight Chance Rain Showers then Partly Cloudy Friday Night Slight Chance Showers And T-Storms then Mostly Clear   Lo 54 °F Lo 62 °F Lo 67 °F Lo 64 °F Lo 58 °F Lo 56 °F Lo 51 °F

Forecast from NOAA-NWS for Peotone, IL.

000
FXUS63 KLOT 061116
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
616 AM CDT Sat Jun 6 2020

.SHORT TERM...
225 AM CDT

Through Sunday...

Pleasant weather is expected across the area through the weekend
as a large surface ridge of high pressure dominates over the Great
Lakes. Easterly surface winds will result in the coolest
conditions along the lakeshore, with highs expected to be near 70
both today and on Sunday. Inland areas will be warmer, with
readings likely topping out in the low to mid 80s with ample
sunshine. Lower humidity is also expected across the area, so even
the 80+ degree temperatures expected for inland areas should not
feel oppressive.

Warmer weather returns to the area for Monday.

KJB

&&

.LONG TERM...
310 AM CDT

Sunday night through Friday...

500 mb ridge builds to around 5900 meters Sunday night into
Monday, within Rex blocking to the north of tropical storm
Cristobal. With 850 mb temps warming to 20-22 deg C, and
subsidence withing the strengthening ridge likely providing
considerable sunshine, afternoon high temps in the low 90s are
expected. With relatively dry southeast surface winds, a few
mid-90`s aren`t out of the question especially across parts of the
Chicago metro where afternoon dew points usually mix out a little
lower. The southeast surface winds will likely keep the immediate
IL lakeshore a little cooler however, with temps in the 80`s
there.

Upper pattern begins to shift eastward a bit Monday night, with
Tropical depression Cristobal forecast to lift north across the
lower Mississippi Valley in advance of the upper trough across the
Plains. A complex evolution is then progged Tuesday into
Wednesday, as Cristobal accelerates northward and is absorbed into
the approaching upper trough, and a strengthening short wave
within the base of the trough also lifts through the region. While
guidance has shown some spread in the details, there is general
agreement in the currently forecast scenario of Cristobal tracking
up the Mississippi River Tuesday afternoon, with rain and
associated gusty winds. Tropical moisture feed (characterized by
2-2.5 inch pwats) is expected to produce a swath of heavy 2-3 inch
rainfall along and just west of the track of the depression.
Guidance generally takes the heaviest rainfall across the far west
(Canadian) or just west (GFS/ECMWF) of the cwa, though any minor
eastward shift in the track at this distance could potentially end
up affecting the local area more directly. Cristobal is progged
to lift north of the area Tuesday night, though lighter
rain/shower chances linger into Wednesday as the aforementioned
trailing short wave lifts through the area.

By the end of the week, models generally maintain some degree of
upper troughing across the upper Midwest region, though there is
considerable spread in the details with the CMC and GFS depicting
lower heights across the area. Overall, a cooler trend is evident
with temps settling into the low-mid 70`s behind a cold front
which passes Thursday or Friday. A decidedly drier air mass is
indicated, though a few showers can`t be ruled out with the cold
front or perhaps diurnally beneath the cold upper trough.

Ratzer

&&

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

Quiet VFR aviation weather conditions expected across the
terminals for the next 24-30 hours.

Surface high pressure will continue to build across western
Ontario and the upper Midwest/western Lakes region today.
Light north surface winds will turn more northeast this morning
and increase a bit, with some gusts into the teens possible at
times. Some slight decrease in winds later this evening, but
otherwise little change other than a gradual veering to a more
easterly direction on Sunday.

Patchy VFR mid/high clouds will drift east across the area this
morning, remnants of elevated convection which has been occurring
to the west across Iowa overnight. This convection is decaying
with decreasing instability as it approaches the Mississippi
River, and is not expected to be a factor for the terminals.

Ratzer

&&

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

$$

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