Lasalle County Weather and Climate Synopsis



Click on button above to view IL Watches/Warnings/Special Wx Statements. Lasalle County, IL Weather and Climate Synopsis To access other UK Agricultural Weather Center Pages use the pull-down menu below.

(Click image to zoom) or Click Here

36 Hr. Forecast Map
All Radar images NOAA/UKAWC
Satellite images from NOAA

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

Also see:
Satellite Images of the Day All NWS Radars NWS Watch/Warning Maps UKAWC Regional Degree Day Maps 7-Day Dep. from Normal Rainfall Map 7-Day Dep. from Normal Temp. Map	Desktop Severe Weather Info US Weather at a Glance Learning About Weather State Crop/Weather Reports Crop Moisture Index (JAWF) Palmer Drought Index(NOAA) State Climatology Office

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
858 PM CDT Wed Jul 31 2019

Cirrus clouds moved across western Illinois this evening, as a
band of rainfall slid through eastern Missouri. Temperatures late
evening were beginning to fall into the 60s.

The dry and seasonable weather pattern will continue through the
remainder of this week and into the weekend. As High pressure
slides toward the East Coast this weekend, temperatures will climb
back into the upper 80s to near 90 by Sunday.

Lows tonight will drop into the mid 50s to mid 60s. Highs Thursday
will peak in the upper 70s across northeast Indiana, increasing
southwest to the mid 80s in Missouri.

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 400 AM CDT SAT APR 20 2024

NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE CLEAR 37 22 54 W13G18 30.15R WCI 29 TC 3 CHICAGO-MIDWAY CLEAR 39 20 46 W13 30.16R WCI 31 TC 4 AURORA CLEAR 33 21 61 W12 30.18R WCI 24 TC 1 JOLIET* CLEAR 38 23 53 W7 30.20R WCI 33 TC 4 WAUKEGAN PTCLDY 36 21 54 VRB6 30.13R WCI 31 TC 2 DUPAGE AIRPORT CLEAR 35 20 54 W12 30.17R WCI 27 TC 2 KANKAKEE* CLEAR 37 26 65 W9 30.21R WCI 30 TC 3 WHEELING CLEAR 37 19 48 NW13 30.16R WCI 29 TC 3 MORRIS* CLEAR 37 24 59 NW13 30.20R WCI 28 TC 3 ROMEOVILLE* CLEAR 37 19 48 W12G24 30.19S WCI 30 TC 3 LANSING* CLEAR 38 24 56 W10G20 30.17S WCI 31 TC 4 NORTHERLY ISL* N/A 40 22 49 W12 N/A TC 4

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 400am CDT, Saturday April 20, 2024

Across Illinois...temperatures are near 34 degrees north, near 42 degrees central, and near 40 degrees south. Current sky conditions are clear north, clear central, and clear south. In the north, relative humidity is near 56%, and the dew point is near 20 degrees. In the central part of the state, relative humidity is near 64%, and the dew point is near 31 degrees. In the south, relative humidity is near 97%, and the dew point is near 39 degrees. Winds are from the west at 12 mph north, where conditions are favorable for spraying. The wind chill is near 25 degrees north. Winds are from the north at 13 mph central, where conditions are not favorable for spraying due to strong winds. Winds are calm south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 290/ degrees at Northerly Island. The lowest temperature is 32 degrees at Rochelle, Galesburg, and De Kalb.

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
349 AM CDT Sat Apr 20 2024 /449 AM EDT Sat Apr 20 2024/ DAY ONE Today and Tonight. Weather hazards expected Significant Frost Risk outside of Chicago DISCUSSION Frost development and subfreezing temperatures are possible tonight away from Chicago. DAYS TWO THROUGH SEVEN Sunday through Friday. Sunday night Limited Frost Risk. Tuesday Limited Thunderstorm Risk. Wednesday night Limited Frost Risk. Friday Limited Thunderstorm Risk. SPOTTER INFORMATION STATEMENT Spotter activation will not be necessary through tonight.
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For LASALLE County, IL
310 AM CDT Sat Apr 20 2024 TODAY
Sunny in the morning, then becoming partly cloudy late in the morning, then becoming mostly cloudy in the afternoon. Highs around 50. Northwest winds 10 to 20 mph with gusts up to 25 mph.
TONIGHT
Mostly cloudy in the evening, then clearing. Areas of frost after midnight. Lows in the lower 30s. West winds 5 to 10 mph.
SUNDAY
Sunny. Highs in the upper 50s. Northwest winds 10 to 15 mph.
SUNDAY NIGHT
Clear. Areas of frost after midnight. Lows in the mid 30s. West winds 5 to 10 mph.
MONDAY
Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 60s. Southwest winds 10 to 20 mph with gusts up to 30 mph.
MONDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Chance of precipitation 50 percent.
TUESDAY
Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of precipitation 70 percent.
TUESDAY NIGHT
Partly cloudy with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 30s. Chance of precipitation 20 percent.
WEDNESDAY
Mostly sunny. Highs in the mid 50s.
WEDNESDAY NIGHT
Mostly clear. Patchy frost after midnight. Lows in the mid 30s.
THURSDAY
Mostly sunny in the morning, then becoming partly cloudy. Patchy frost in the morning. Highs in the lower 60s.
THURSDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the mid 40s.
FRIDAY
Mostly cloudy. A chance of showers in the morning, then showers likely in the afternoon. Highs in the mid 60s. Chance of precipitation 60 percent.
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 ILLINOIS --------------------------------------------- 6 TO 10 DAY 8 TO 14 DAY 30 DAY 90 DAY APR 25-29 APR 27-MAY 3 JUN JUN-AUG ----------- ----------- -------- --------- Temperature: Precipitation: .... 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 April 20, 2024 the 111th Day of Year --------------------------------------------------- SUN Declination 12.040000 Distance 0.999719 AU Rise 07:13 EDT Set 20:44 EDT Transit Meridian 13:57 EDT Civil Twilight Begins 06:45 EDT Ends 21:11 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

APRIL 20TH HISTORIC WEATHER EVENTS ...1901... A spring storm produced unusally heavy snow in northeast Ohio. Warren received 35.5 inches in thirty-six hours, and 28 inches fell at Green Hill. Akron OH established April records of 15.6 inches in 24 hours, and 26.6 inches for the month. Pittsburgh PA established April records of 12.7 inches in 24 hours, and 13.5 inches for the month. (David Ludlum) (The Weather Channel) ...1920... Tornadoes in Mississippi and Alabama killed 219 persons. (David Ludlum) ...2002... An unseasonably warm and moist air mass had settled across eastern Kentucky leading to record breaking temperatures at the Jackson Weather Office and the London Corbin Airport between the 16th and 21st of April. Jackson saw several days in a row with record high temperatures as well as maximum low records. On the 19th the mercury soared to a record high of 89 degrees at Jackson and a record tying 87 degrees at London. The low temperature at Jackson was a balmy 69 degrees good enough for a daily as well as a monthly maximum low temperature record. (NWS Jackson)

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