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Cook 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
432 AM CDT Sat Sep 22 2018

Northerly winds brought much cooler and less humid air into central
and southeast Illinois, overnight. Pre-dawn temperatures were in 
the 50s.

High pressure centered over the western Great Lakes, will provide
dry and seasonably cool weather to much of the region, through
tonight. Farther south, a frontal boundary stalled south of the 
Ohio River, will bring a chance of thunderstorms as far north as
southern Illinois and Indiana. As this front lifts north on
Monday, rain chances will increase across central and eastern

High temperatures today will reach the mid 60s to mid 70s across
the Midwest, while lows tonight will drop into the mid 40s to mid

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

Click here for UKAWC Point Agricultural, Lawn & Garden Forecast/Outlook in case of corrupt tables.
Regional Hourly Observations For COOK County
Issued at 800 AM CDT SAT SEP 22 2018

CHICAGO-OHARE  FAIR      58  42  55 E13       30.32R                  
CHICAGO-MIDWAY FAIR      59  40  49 NE16G26   30.31S                  
AURORA         FAIR      50  45  83 N9        30.32S                  
LANSING*       FAIR      55  44  67 E8        30.32S                  
JOLIET*        FAIR      55  47  76 N3        30.31S                  
WAUKEGAN       FAIR      57  43  59 E12       30.32R                  
DUPAGE AIRPORT FAIR      51  45  79 N8        30.32R                  
KANKAKEE*      FAIR      53  44  71 E13       30.31F                  
WHEELING       FAIR      58  44  60 E6        30.34R                  
MORRIS*        FAIR      50  45  83 CALM      30.31R                  
ROMEOVILLE*    FAIR      54  47  75 NE7       30.31S                  
NORTHERLY ISL    N/A     58  44  60 NE18        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 800am CDT, Saturday September 22, 2018

Across Illinois...temperatures are near 49 degrees north, near 54 degrees central, and near 58 degrees south. Current sky conditions are fair north, fair central, and light rain south. In the north, relative humidity is near 74%, and the dew point is near 41 degrees. In the central part of the state, relative humidity is near 71%, and the dew point is near 45 degrees. In the south, relative humidity is near 90%, and the dew point is near 55 degrees. The livestock heat stress category is no stress north, no stress central, and no stress south. Winds are from the northeast at 9 mph north, where conditions are favorable for spraying. Winds are from the northeast at 8 mph central, where conditions are favorable for spraying. Winds are from the northeast at 8 mph south, where conditions are not favorable for spraying due to light rain. Based on current available observations, the highest temperature is 63 degrees at Harrisburg and Carmi. The lowest temperature is 46 degrees at Freeport.

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 COOK County,IL

336 AM CDT Sat Sep 22 2018 /436 AM EDT Sat Sep 22 2018/

 DAY ONE  Early this Morning through Tonight.

Weather hazards expected  

  High Swim Risk

 DAYS TWO THROUGH SEVEN  Sunday through Friday.

  High Swim Risk
Monday and Tuesday  
  Limited Thunderstorm Risk.
  Limited Thunderstorm Risk.


  Spotter activation will not be necessary through tonight.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For COOK County, IL
237 AM CDT Sat Sep 22 2018

Partly cloudy in the morning then clearing. Highs in the mid 60s. East winds 10 to 15 mph.

Clear. Lows in the upper 40s in the suburbs
but in the mid 50s downtown. Southeast winds 5 to 10 mph.

Sunny. Highs in the lower 70s. East winds 5 to 10 mph.

Clear. Lows in the mid 50s. East winds 5 to 10 mph.

Partly sunny. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Southeast winds 10 to 15 mph.

Mostly cloudy. Chance of showers and a slight chance of thunderstorms in the evening, then showers likely and a chance of thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 60 percent.

Mostly cloudy with chance of showers and a slight chance of thunderstorms. Highs in the mid 70s. Chance of precipitation 40 percent.

Partly cloudy. Chance of showers in the evening. Lows in the mid 50s. Chance of precipitation 30 percent.

Partly cloudy in the morning then clearing. Highs in the mid 60s.

Partly cloudy. Lows in the upper 40s in the suburbs
but in the lower 50s downtown. 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 27-OCT 1 SEP 29-OCT 5    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

Saturday September 22, 2018 the 265th Day of Year

Declination -0.060000
Distance 0.999719 AU
Rise 07:47 EDT Set 19:55 EDT
Transit Meridian 13:51 EDT
Civil Twilight Begins 07:21 EDT Ends 20:21 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

Cleveland Abbe began forecasting weather, in Cincinnati. (NWS Louisville)
A severe hailstorm struck Strawberry AZ. Fives days after the storm hail
still lay in drifts 12 to 18 inches deep. (The Weather Channel)
Des Moines IA experienced their earliest freeze of record. (The Weather
Hurricane Esther made a near complete circle south of Cape Cod. The
hurricane then passed over Cape Cod and hit Maine. Its energy was largely
spent over the North Atlantic Ocean, however, heavy rains over Maine
resulted in widespread local flooding of cellars, low roads, and
underpasses. (David Ludlum)
Forty-one cities reported record cold temperatures during the morning.
Houston TX hit 50 degrees, and Williston ND plunged to 19 degrees. (The
Weather Channel)
Hurricane Emily, the first hurricane to roam the Carribean in nearly six
years, made landfall over the Dominican Republic late in the day, packing
125 mph winds. Emily killed three persons and caused thirty million dollars
damage. A record high of 92 degrees at Miami FL was their fifth in a row.
(Storm Data) (The National Weather Summary)
An early morning thunderstorm produced baseball size hail at Plainview, in
Hale County TX. Late in the evening more thunderstorms in the Southern High
Plains Region produced wind gusts to 75 mph at Plainview TX and Crosby TX.
(Storm Data) (The National Weather Summary)
Hurricane Hugo quickly lost strength over South Carolina, but still was a
tropical storm as it crossed into North Carolina, just west of Charlotte,
at about 7 AM. Winds around Charlotte reached 69 mph, with gusts to 99 mph.
Eighty percent of the power was knocked out to Charlotte and Mecklenburg
County. Property damage in North Carolina was 210 million dollars, and
damage to crops was 97 million dollars. The strongest storm surge occurred
along the southern coast shortly after midnight, reaching nine feet above
sea level at ocean Isle and Sunset Beach. Hugo killed one person and
injured fifteen others in North Carolina. Strong northwesterly winds
ushered unseasonably cold air into the north central U.S., in time for the
official start of autumn, at 8:20 PM (CDT). Squalls produced light snow in
northern Wisconsin. Winds in Wisconsin gusted to 52 mph at Rhinelander.
(Storm Data) (The National Weather Summary)

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