DeKalb 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

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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

NORTH CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       MOSUNNY   86  57  37 S13       29.81S HX  85  TC  30   
FREEPORT*      MOSUNNY   86  55  35 SW16G23   29.81S HX  84  TC  30   
ROCHELLE*      MOSUNNY   86  54  33 SW18      29.82S HX  84  TC  30   
DE KALB*       MOSUNNY   84  54  35 S14G20    29.83F HX  83  TC  29   
PERU*          SUNNY     86  57  36 SW14      29.83S HX  85  TC  30   

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

.TONIGHT...Mostly clear in the evening, then becoming mostly
cloudy late in the evening, then becoming partly cloudy late in
the night. A slight chance of showers and thunderstorms after
midnight. Unseasonably mild. Lows in the lower 60s. Southwest
winds 5 to 10 mph in the evening, becoming northwest after
midnight. Chance of precipitation 20 percent. 
.SUNDAY...Mostly sunny. Continued warm with highs in the mid 80s.
Northeast winds 5 to 10 mph. 
.SUNDAY NIGHT...Mostly cloudy in the evening, then partly cloudy
with a slight chance of showers and thunderstorms after midnight.
Lows around 60. Southeast winds 5 to 10 mph. Chance of
precipitation 20 percent. 
.MONDAY...Mostly cloudy. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. More humid with highs in the
upper 80s. South winds 10 to 20 mph with gusts up to 25 mph.
Chance of precipitation 50 percent. 
.MONDAY NIGHT...Showers and thunderstorms likely in the evening,
then showers likely with a chance of thunderstorms after
midnight. Lows in the mid 60s. South winds 5 to 10 mph. Chance of
precipitation 60 percent. 
.TUESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. A chance of showers and thunderstorms. Highs in the mid
80s. Chance of precipitation 50 percent. 
.TUESDAY NIGHT...Mostly cloudy. Showers with thunderstorms likely
in the evening, then a chance of showers and thunderstorms after
midnight. Lows in the upper 50s. Chance of precipitation
80 percent. 
.WEDNESDAY...Partly cloudy with a 20 percent chance of showers.
Highs in the lower 70s. 
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. 
.THURSDAY...Mostly sunny. Highs in the mid 70s. 
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s. 
.FRIDAY...Partly cloudy. A chance of showers in the afternoon.
Highs in the upper 70s. Chance of precipitation 30 percent. 
.FRIDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight. Lows in the lower 50s. Chance of precipitation
40 percent. 
.SATURDAY...Partly cloudy. A chance of showers in the afternoon.
Highs in the mid 70s. Chance of precipitation 30 percent. 

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

Saturday May 18, 2024 the 139th Day of Year

---------------------------------------------------
SUN
Declination 19.880000
Distance 0.999717 AU
Rise 06:41 EDT Set 21:11 EDT
Transit Meridian 13:55 EDT
Civil Twilight Begins 06:11 EDT Ends 21:41 EDT

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

////////////////////////////
MAY 18TH...HISTORIC WEATHER EVENTS
...1825...
A tornado (said to have crossed all of the state of Ohio) smashed into the
log cabin settlement of Burlington, northeast of Columbus. (David Ludlum)
...1960...
Salt Lake City UT received an inch of snow. It marked their latest
measurable snowfall of record. (The Weather Channel)
...1980...
Mount Saint Helens (in Washington State) erupted spewing ash and smoke
sixty-three thousand feet into the air. Heavy ash covered the ground to the
immediate northwest, and small particles were carried to the Atlantic
coast. (David Ludlum)