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LaSalle 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
914 PM CDT Mon Jun 26 2017

A weak cold front continued dropping south across central and 
southeast Illinois this evening. A few isolated showers with some 
embedded thunderstorms were seen ahead of the front. The 
precipitation had made it to the I-72 corridor by late evening.
Otherwise, skies were clearing behind the frontal passage.  
Temperatures around the area just before sunset were in the 60s.

The showers and thunderstorms will continue moving southeast this
evening, before ending not long after sunset. Overnight and on 
Tuesday, high pressure will be in control, continuing the 
seasonably cool temperatures. A warm front will move into the area
on Wednesday, bringing more seasonal temperatures and more humid 
conditions. A chance of showers and thunderstorms moves in late 
Wednesday when a cold front moves into the area. This front is 
expected to stall across northern Missouri, central Illinois, and 
central Indiana, then be the focus for showers and thunderstorms
late in the week and into the weekend. 

Low temperatures overnight will drop into the 50s across the 
region, with some mid and upper 40s noted across northeast Iowa 
and much of Wisconsin. High temperatures on Tuesday, will top out 
in the mid 70s to low 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 LASALLE County
Issued at 300 AM CDT TUE JUN 27 2017

CHICAGO-OHARE  CLEAR     53  46  77 W5        30.10R                  
CHICAGO-MIDWAY CLEAR     56  46  69 W5        30.10R                  
AURORA         CLEAR     48  45  89 W5        30.12S                  
LANSING*       CLEAR     53  44  72 W3        30.11R                  
JOLIET*        CLEAR     50  48  93 CALM      30.12R                  
WAUKEGAN       CLEAR     52  48  86 VRB3      30.09S                  
DUPAGE AIRPORT CLEAR     52  46  80 CALM      30.10S                  
WHEELING       CLEAR     54  48  80 CALM      30.11S                  
MORRIS*        CLEAR     50  44  80 NW5       30.11R                  
ROMEOVILLE*    CLEAR     53  44  72 W6        30.11S                  
NORTHERLY ISL    N/A     59  45  59 CALM        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 300am CDT, Tuesday June 27, 2017

Across Illinois...temperatures are near 50 degrees north, near 57 degrees central, and near 52 degrees south. Current sky conditions are clear north, clear central, and clear south. In the north, relative humidity is near 86%, and the dew point is near 46 degrees. In the central part of the state, relative humidity is near 80%, and the dew point is near 51 degrees. In the south, relative humidity is near 97%, and the dew point is near 51 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 south at 3 mph north, where conditions are favorable for spraying. Winds are from the northwest at 5 mph central, where conditions are favorable for spraying. Winds are calm south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 63 degrees at Metropolis. The lowest temperature is 47 degrees at Rochelle and Macomb.

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 LASALLE County,IL

321 PM CDT Mon Jun 26 2017 /421 PM EDT Mon Jun 26 2017/

 DAY ONE  Tonight.

  Limited Thunderstorm Risk.
  High Swim Risk.


Isolated thunderstorms are possible this afternoon south of
Interstate 80. Severe weather is not expected. Dangerous swimming
conditions are expected at northwest Indiana Lake Michigan 

 DAYS TWO THROUGH SEVEN  Tuesday through Sunday.

  Limited Flooding Risk.
  Elevated Severe Thunderstorm Risk.
  Elevated Thunderstorm Risk.
  Limited Flooding Risk.
  Elevated Thunderstorm Risk.
Saturday and Sunday  
  Limited Thunderstorm Risk.


An active weather pattern is expected Wednesday through Friday
with several periods of thunderstorms. At this time, Wednesday 
and Friday look to feature the most widespread thunderstorms. At 
least Wednesday will have a risk for strong to severe 
thunderstorms and both Wednesday and Friday will also have a risk 
for very heavy rainfall and flooding.


Spotter activation will not be necessary through tonight.


Moving toward the southeast at 30 MPH.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For LASALLE County, IL
339 AM CDT Tue Jun 27 2017

Sunny. Highs in the upper 70s. West winds around 5 mph in the morning becoming southwest in the afternoon.

Mostly clear. Lows in the mid 50s. South winds 10 to 15 mph.

Partly sunny in the morning then becoming cloudy. A 40 percent chance of showers and thunderstorms. Breezy. Highs in the lower 80s. South winds 15 to 25 mph with gusts up to 30 mph.

Showers and thunderstorms likely. Breezy. Lows in the upper 60s. Southwest winds 15 to 25 mph with gusts up to 30 mph. Chance of precipitation 60 percent.

Mostly cloudy with a 50 percent chance of showers and thunderstorms. Highs in the mid 80s. Southwest winds 10 to 20 mph.

Showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 80 percent.

Mostly cloudy. Showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of precipitation 80 percent.

Partly cloudy. Lows in the mid 60s.

Partly cloudy. Highs in the lower 80s. Lows in the lower 60s.

Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the mid 60s.

Mostly cloudy with a 50 percent chance of showers and thunderstorms. Highs in the lower 80s.

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 
                 JUL 2-JUL 6 JUL 4-JUL 10    JUL       JUL-SEP                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        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

Tuesday June 27, 2017 the 178th Day of Year

Declination 23.270000
Distance 0.999715 AU
Rise 06:33 EDT Set 21:31 EDT
Transit Meridian 14:02 EDT
Civil Twilight Begins 06:02 EDT Ends 22:03 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

At Newbury, Massachusetts, a violent tornado did extensive damage.
A "wind rush" at Washington, DC damaged the city hall and the Masonic Temple.
There was a rain of fish from the sky at Tiller's Ferry. Hundreds of fish
were swimming between cotton rows after a heavy shower. (David Ludlum)
The temperature at Fort Yukon AK soared to 100 degrees to establish a state
record. (The Weather Channel)
Hurricane Audrey smashed ashore at Cameron LA drowning 390 persons in the
storm tide, and causing 150 million dollars damage in Texas, Louisiana and
Mississippi. Audrey left only a brick courthouse and a cement-block
icehouse standing at Cameron, and when the waters settled in the town of
Crede, only four buildings remained. The powerful winds of Audrey tossed a
fishing boat weighing 78 tons onto an off-shore drilling platform. Winds
along the coast gusted to 105 mph, and oil rigs off the Louisiana coast
reported wind gusts to 180 mph. A storm surge greater than twelve feet
inundated the Louisiana coast as much as 25 miles inland. It was the
deadliest June hurricane of record for the U.S. (David Ludlum) (The Weather
The big heat continued in the southwestern U.S.  Lakewood, New Mexico hit a 
scorching 119 degrees to set a new all-time state record.  Afternoon highs of 
116 degrees at Midland, Texas, 114 at Lubbock, Texas and Roswell, new Mexico, 
and 113 at El Paso, Texas set new all-time records for those locations.  The 
mesonet station 4 miles south of Tipton, Oklahoma hit 120 degrees, to tie the 
state record high temperature.

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