Williamson County, Illinois Weather and Climate Synopsis

Regional Hourly Observations Nowcast: 0-6 Hour Forecast Forecast: 7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

(Click image to zoom) or Click Here Satellite images from NOAA Also see NWS Watch/Warning Maps Weathernet's NWS NEXRADS Regional Degree Day Maps Learning About Weather Crop Moisture Index (JAWF) PDSI (NOAA)

A joint service of the UK Ag Weather Center and the National Weather Service.

Current Surface Map, [TWC], Yesterday's Highs , Lows
Map of 24 Hr Rainfall (7AM - 7AM EST), 7 Day Rainfall Animation

SOUTH-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     CLOUDY    68  60  75 N3        30.07R TC  20           
CAIRO*         CLOUDY    71  64  78 E6        30.06R TC  22           
EFFINGHAM*     MOSUNNY   65  54  67 NW6       30.09S TC  19           
MARION         CLOUDY    66  66 100 N5        30.07R TC  19           
MT. VERNON     PTSUNNY   67  59  75 E3        30.08R TC  19           
CENTRALIA*     PTSUNNY   67  56  69 N3        30.08R TC  19           
SALEM*         PTSUNNY   66  56  68 CALM      30.09R TC  19           
METROPOLIS*    CLOUDY    72  62  70 CALM      30.06S TC  22           

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

.TODAY...Mostly cloudy this morning, then partly sunny with a
slight chance of showers this afternoon. Highs in the upper 70s.
North winds around 5 mph. Chance of rain 20 percent. 
.TONIGHT...Mostly cloudy with a chance of thunderstorms. A chance
of showers in the evening, then showers likely after midnight.
Lows in the lower 60s. Northeast winds around 5 mph. Chance of
rain 70 percent. 
.MONDAY...A chance of thunderstorms. Showers. Highs in the mid
70s. East winds 5 to 10 mph, becoming south in the afternoon.
Chance of rain 80 percent. 
.MONDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows in the
mid 60s. South winds 10 to 15 mph. Chance of rain 50 percent. 
.TUESDAY...A chance of thunderstorms. Showers. Highs in the lower
80s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance
of rain 80 percent. 
.TUESDAY NIGHT...A chance of thunderstorms. Showers likely,
mainly in the evening. Lows in the lower 60s. Chance of rain
70 percent. 
.WEDNESDAY...Mostly sunny. A chance of showers and thunderstorms
in the morning, then showers with thunderstorms likely in the
afternoon. Highs in the lower 80s. Chance of rain 80 percent. 
.WEDNESDAY NIGHT...Showers and thunderstorms likely, mainly in
the evening. Lows around 60. Chance of rain 70 percent. 
.THURSDAY...Sunny. Highs in the upper 70s. 
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 50s.
Highs in the upper 60s. 
.FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows in the upper 40s.
Highs in the lower 70s. 

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

                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY     120 DAY    180 DAY
                                           NOV05   NOV05-JAN06 DEC05-FEB06 FEB06-APR06
                 -----------  -----------  --------  ---------  ---------  ---------
   Temperature:      Below        Below      Above     Normal     Normal     Normal
 Precipitation:      Below        Below     Normal     Normal     Normal     Normal

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy

Sunday May 05, 2024 the 126th Day of Year

---------------------------------------------------
SUN
Declination 16.690000
Distance 0.999718 AU
Rise 06:53 EDT Set 20:59 EDT
Transit Meridian 13:55 EDT
Civil Twilight Begins 06:25 EDT Ends 21:27 EDT

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

///////////////////////////////
MAY 5TH...HISTORIC WEATHER EVENTS
...1917...
The same storm which a day earlier produced eight inches of snow in the Texas 
panhandle, produced a foot of snow at Denver CO, their heaviest snow
of record for the month of May. (David Ludlum)
...1930...
The temperature at College Park VA soared from 43 degrees to 93 degrees to
begin an exceptional heat wave. (Sandra and TI Richard Sanders - 1987)
...1987...
Unseasonably hot weather prevailed in the western U.S. A dozen cities in 
California reported record high temperatures for the date. Afternoon highs 
of 93 degrees at San Francisco, 98 degrees at San Jose, 100 degrees at 
Sacramento, and 101 degrees at Redding, were the warmest of record for so 
early in the season. The high of 94 degrees at Medford OR was also the 
warmest of record for so early in the season. (The National Weather 
Summary)
...1989...
Damage was in the millions as the funnel cut a swath across Cleveland, 
Lincoln, and Catawba counties in North Carolina. The F4 tornado killed 4 
and injured 52.
...1996...
Flash flooding occurred in Pike and Morgan counties Kentucky. Heavy rain 
produced flooding along route 460 near Cottle in Morgan county. 
However...the flooding was much worse in northern and eastern sections of 
Pike county...where damage was estimated at one million dollars. Up to two 
and a half inches of rain fell during a short period of time in Pike 
county. Forty to fifty bridges were washed out...numerous roads were 
flooded and automobiles were washed down creeks. The Varney elementary 
school suffered serious flood damage. (NWS Jackson, KY)