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Will County, IL Weather and Climate Synopsis

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36 Hr. Forecast Map
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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

US Weekly Temperature Departure
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A joint service of the UK Ag Weather Center and the National Weather Service.

Weather Summary For Central And Southeast Illinois
National Weather Service Lincoln IL
946 AM CDT Thu Sep 20 2018

Mostly sunny skies and warm and humid conditions prevailed over 
central and southeast Illinois, this morning. Overnight lows were 
in the upper 60s to lower 70s.

Mostly sunny skies and brisk southwest flow will bring another day
of well above normal, to near record high temperatures, today. While
isolated thunderstorms are possible today, better rain chances 
will remain farther north over the upper Midwest, near a slow 
moving front. As the front pushes south into the region tonight 
and Friday, scattered storms are possible. The front will stall 
near the Ohio Valley this weekend, keeping unsettled weather in 
that region. Farther north, high pressure will bring in cooler 
and less humid air.

High temperatures today will reach the mid 80s to mid 90s across
the Midwest. Lows tonight will range from the upper 50s in
northern Iowa, to the lower 70s in central Illinois.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

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Regional Hourly Observations For WILL County
Issued at 1200 PM CDT THU SEP 20 2018

CHICAGO-OHARE  NOT AVBL                                               
CHICAGO-MIDWAY NOT AVBL                                               
AURORA         NOT AVBL                                               
WAUKEGAN       NOT AVBL                                               
DUPAGE AIRPORT NOT AVBL                                               
WHEELING       NOT AVBL                                               
NORTHERLY ISL    N/A     75  70  84 E5          N/A                   

Current Temperatures, Dewpoint Map, RH, Wind, Regional Obs, Surface 4-Panel
Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Current Agricultural Weather Conditions in Illinois
Based on observations at 1200pm CDT, Thursday September 20, 2018

Across Illinois...temperatures are near 88 south. Current sky condition is sunny south. In the south, relative humidity is near 62%, and the dew point is near 73 degrees. The heat index is near 96 degrees south. The livestock heat stress category is unavailable north, unavailable central, and danger south. Winds are unavailable north. Winds are unavailable central. Winds are from the south at 12 mph south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 100/ degrees at Northerly Island. The lowest temperature is 72 degrees at Waukegan.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time),Livestock Heat Stress Index (LSI), Wind Chill Map
Hazardous Weather Outlook For WILL County,IL

1031 AM CDT Thu Sep 20 2018 /1131 AM EDT Thu Sep 20 2018/

 DAY ONE  Today and Tonight.

Weather hazards expected  

  Limited Thunderstorm Risk.
  Limited Excessive heat Risk.


Isolated thunderstorms are possible across the outlook area 
this afternoon, as a warm front lifts across the region. If 
storms develop this afternoon, a stronger storm or two capable of
gusty winds are possible. As the warm front lifts north, 
temperatures will warm to around 90 or the lower 90s in many 
spots, with heat index values peaking in the 94 to 102 range 
during the warmest part of the afternoon. There is an additional 
chance of thunderstorms late tonight as a cold front moves 

 DAYS TWO THROUGH SEVEN  Friday through Wednesday.

  Limited Thunderstorm Risk.
  High Swim Risk
  High Swim Risk
  Limited Thunderstorm Risk.
  Elevated Thunderstorm Risk.


Scattered thunderstorms will end from northwest to southeast 
across the area Friday, as a cold front moves through the area. 
Gusty north winds will develop later in the day and continue 
Friday night, which will result in building waves and dangerous 
swim conditions developing at Lake Michigan beaches.


  Spotter activation will not be necessary through tonight.


Moving toward the east-northeast around 30 mph.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For WILL County, IL
928 AM CDT Thu Sep 20 2018

Partly cloudy with a 20 percent chance of showers and thunderstorms. Near record breaking heat likely. Highs in the lower 90s. Highest heat index readings 97 to 102 in the afternoon. South winds 10 to 20 mph. Gusts up to 30 mph in the afternoon.

Mostly clear in the evening, then partly cloudy with a 20 percent chance of showers and thunderstorms after midnight. Breezy. Lows in the lower 70s. Southwest winds 15 to 25 mph with gusts up to 30 mph.

Partly sunny. A 20 percent chance of showers and thunderstorms in the morning. Highs in the mid 70s. Then temperatures falling into the mid 60s by evening. West winds 10 to 20 mph with gusts up to 30 mph.

Partly cloudy. Lows in the lower 50s. North winds 10 to 15 mph.

Partly cloudy in the morning then clearing. Highs in the upper 60s. Northeast winds 5 to 10 mph.

Clear. Lows in the upper 40s.

Sunny. Highs in the lower 70s.

Mostly clear. Lows in the lower 50s. Highs in the mid 70s.

Partly cloudy with a 40 percent chance of showers and thunderstorms. Lows around 60.

Mostly cloudy with a 50 percent chance of showers and thunderstorms. Highs in the mid 70s.

Mostly cloudy. A 30 percent chance of showers and thunderstorms in the evening. Lows in the lower 50s.

Partly cloudy. Highs in the upper 60s.

12-48 Hr Surface, 12-48 Hr ETA 500mb/Sfc, TWC Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip
NGM 60 Hr Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford , Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Illinois
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   SEP 25-29 SEP 27-OCT 3    SEP       SEP-NOV                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below                                            
 Precipitation:      Above        Above                                            

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
MRF 10-Day Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Almanac Information

Thursday September 20, 2018 the 263th Day of Year

Declination 0.710000
Distance 0.999719 AU
Rise 07:45 EDT Set 19:59 EDT
Transit Meridian 13:52 EDT
Civil Twilight Begins 07:19 EDT Ends 20:24 EDT

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy

Historical Weather And Climate Facts For Today

A tornado traveled 275 miles across Lake Ontario, New York and Lake
Champlain. (Sandra and TI Richard Sanders - 1987)
A hurricane which hit Miami FL on the 18th, pounded Pensacola with wind
gusts to 152 mph. Winds raged in excess of 100 mph for four hours, and
above 75 mph for 20 hours. (The Weather Channel)
Hurricane Beulah moved into South Texas, and torrential rains from the
hurricane turned the rich agricultural areas of South Texas into a large
lake. Hurricane Beulah also spawned a record 115 tornadoes. (David Ludlum)
The temperature at West Yellowstone MT plunged to six degrees below zero,
while the temperature at San Francisco CA soared to 94 degrees. (The
Weather Channel)
Afternoon and evening thunderstorms produced severe weather in Oklahoma and
west Texas. In Oklahoma, a thunderstorm at Seiling produced three inches of
rain in one hour, golf ball size hail, and wind gusts to 60 mph which
collapsed a tent at the state fair injuring nine persons. (The National
Weather Summary) (Storm Data)
Showers and thunderstorms produced locally heavy rains in central Wyoming,
and snow in some of the higher elevations. Casper WY reported 1.75 inches
of rain in 24 hours, and a thunder- storm north of the Wild Horse Reservoir
produced 1.90 inches of rain in just forty minutes.
Hugo jilted Iris. Hurricane Hugo churned toward the South Atlantic Coast,
gradually regaining strength along the way. Tropical Storm Iris got too
close to Hugo, and began to weaken. A cold front brought strong and gusty
winds to the Great Basin and the Southern Plateau Region, with wind gusts
to 44 mph reported at Kingman AZ. (The National Weather Summary)
Thunderstorm winds gusting to 115 mph snapped telephone poles in Brandenburg 
(Meade County), Kentucky. (NWS Louisville)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky