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Williamson 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
359 PM CDT Fri Jun 22 2018

Partly to mostly cloudy skies were seen across central and
southeast Illinois, through the late morning hours. A few showers
were seen across central Illinois, as well. Temperatures around 
the area at 3 PM, ranged from 64 degrees at Lacon, to 78 degrees 
at Lawrenceville.

Dry weather will return across the Midwest later tonight, after 
the large low pressure system slides east. A brief dry period on 
Saturday. Additional wet weather is forecast to arrive back into 
the area by Sunday. A cool down is forecast Friday with highs in 
the 70s, but a warmup back to the 80s will occur through the 

Low temperatures overnight, will range from the mid 50s across
northern Illinois and much of Iowa and Wisconsin, to the upper 
60s across the Missouri bootheel.

High temperatures on Saturday, will top out in the middle 70s to
the middle 80s across the Midwest.

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 WILLIAMSON County
Issued at 700 PM CDT FRI JUN 22 2018

CARBONDALE     CLOUDY    74  65  73 W9        29.73R                  
6HR MIN TEMP:  71; 6HR MAX TEMP:  79; 6HR PCP: TRACE;                

CAIRO*         RAIN      73  69  85 N13G24    29.73R                  
EFFINGHAM*     LGT RAIN  72  68  88 W10G16    29.71R                  
MARION         PTSUNNY   73  64  73 NW7       29.74R                  
MT. VERNON     RAIN      69  67  93 VRB6      29.73R FOG              
CENTRALIA*     CLOUDY    73  67  79 NW10      29.71R                  
SALEM*         FAIR      74  66  74 NW10G17   29.71R                  
METROPOLIS*    LGT RAIN  74  68  81 NW6       29.73R                  

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 700pm CDT, Friday June 22, 2018

Across Illinois...temperatures are near 64 degrees north, near 69 degrees central, and near 69 degrees south. Current sky conditions are cloudy north, cloudy central, and rain south. In the north, relative humidity is near 80%, and the dew point is near 58 degrees. In the central part of the state, relative humidity is near 96%, and the dew point is near 68 degrees. In the south, relative humidity is near 93%, and the dew point is near 67 degrees. The livestock heat stress category is no stress north, no stress central, and no stress south. There is patchy fog south. Winds are from the north at 7 mph north, where conditions are favorable for spraying. Winds are from the north at 9 mph central, where conditions are favorable for spraying. Winds are variable at 6 mph south, where conditions are not favorable for spraying due to rain. Based on current available observations, the highest temperature is 360/ degrees at Northerly Island. The lowest temperature is 61 degrees at Wheeling, Waukegan, and Rochelle.

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 WILLIAMSON County,IL

1259 PM CDT Fri Jun 22 2018

 DAY ONE  This Afternoon and Tonight

Isolated thunderstorms will have locally heavy rainfall as the
primary hazard. Low land or flood prone areas could be impacted.

 DAYS TWO THROUGH SEVEN  Saturday through Thursday

Scattered thunderstorms will be possible Saturday night into
Sunday. An isolated strong to severe storm cannot be ruled out.

Otherwise, a chance for mainly isolated heat of the day 
thunderstorms will continue through much of the time period. 
Locally heavy downpours and lightning would be the main hazards.

Heat and humidity will build next week. In particular, from
Tuesday through Thursday, the heat index may reach or exceed the
century mark. 


Spotter activation is not anticipated at this time.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For WILLIAMSON County, IL
234 PM CDT Fri Jun 22 2018

Mostly cloudy. A 20 percent chance of showers in the evening. Lows in the mid 60s. West winds around 5 mph.

Mostly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the lower 80s. Southwest winds around 5 mph.

Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows in the upper 60s. South winds around 5 mph.

Partly sunny with a 40 percent chance of showers and thunderstorms. Highs in the mid 80s. Southwest winds 5 mph.

Partly cloudy in the evening then becoming mostly cloudy. A 40 percent chance of showers and thunderstorms. Lows in the lower 70s. Southeast winds 5 mph.

Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent.

Partly cloudy. Lows in the lower 70s.

Partly sunny with a 40 percent chance of showers and thunderstorms. Highs around 90.

Mostly clear. A 20 percent chance of showers and thunderstorms after midnight. Lows in the mid 70s.

Partly sunny. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the lower 90s.

Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid 70s.

Mostly sunny. Highs in the mid 90s.

Mostly clear. Lows in the mid 70s.

Partly sunny. A 20 percent chance of showers in the morning. Highs in the mid 90s.

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 
                JUN 28-JUL 2 JUN 30-JUL 6    JUL       JUL-SEP                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above      Above      Above                      
 Precipitation:      Above        Above     Normal     Normal                      

....  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

Friday June 22, 2018 the 173th Day of Year

Declination 23.430000
Distance 0.999716 AU
Rise 06:31 EDT Set 21:31 EDT
Transit Meridian 14:01 EDT
Civil Twilight Begins 06:00 EDT Ends 22:02 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

Twelve inches of rain fell in forty-two minutes at Holt MO establishing a
world rainfall record. That record was tied on January 24-25, 1956, at the
Kilauea Sugar Plantation in Hawaii, as their state record was established
with 38 inches of rain in 24 hours. (The Weather Channel)
Hurricane Agnes deluged Pennsylvania and New York State with torrential
rains resulting in the most costly flood in U.S. history. In the Middle
Susquehanna Valley of Pennsylvania, 24 hour rainfall amounts were generally
8 to 12 inches, with up to 19 inches in extreme southwestern Schuylkill
County. At Wilkes-Barre PA the dike was breached destroying much of the
town. Flooding resulted in 117 deaths and 3.1 billion dollars damage.
(David Ludlum)
A young woman from Lubbock TX was struck by lightning. The bolt of
lightning struck just above her right shoulder near her neck, and passed
right to left through her body, tearing her warm-ups, causing her tennis
shoes to explode, and lifting her two feet into the air. (The Weather
Record cold prevailed in the eastern U.S. with 67 low temperature records for 
the date tied or broken.  Indianapolis, Indiana dipped to 37 degrees to set a 
new all-time record low temperature for June and the coldest summer temperature 
ever.  In sharp contrast, it was a furnace in the Pacific Northwest with Eugene 
and Medford, Oregon setting new all-time record high temperatures for June with 
102 and 111 degrees, respectively.

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