Grundy County Weather and Climate Synopsis



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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
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 GRUNDY County
Issued at 800 AM CDT SAT APR 20 2024

NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE MOSUNNY 37 22 54 W14 30.20R WCI 28 TC 3 CHICAGO-MIDWAY MOSUNNY 39 21 48 NW13 30.21R WCI 31 TC 4 AURORA SUNNY 37 23 56 W15 30.22R WCI 28 TC 3 JOLIET* SUNNY 39 25 57 NW12 30.24S WCI 32 TC 4 WAUKEGAN SUNNY 37 22 54 W12G20 30.18R WCI 29 TC 3 DUPAGE AIRPORT SUNNY 37 22 54 W14 30.21R WCI 28 TC 3 KANKAKEE* SUNNY 38 25 59 W17 30.26S WCI 28 TC 3 WHEELING SUNNY 38 22 52 NW14G22 30.22R WCI 30 TC 3 MORRIS* SUNNY 37 26 64 W14 30.24R WCI 28 TC 3 ROMEOVILLE* SUNNY 37 23 56 W13 30.24R WCI 29 TC 3 LANSING* SUNNY 37 24 59 NW9G16 30.23R WCI 31 TC 3 NORTHERLY ISL* N/A 38 21 51 SW10 N/A WCI 31 TC 3

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 800am CDT, Saturday April 20, 2024

Across Illinois...temperatures are near 38 degrees north, near 42 degrees central, and near 47 degrees south. Current sky conditions are mostly sunny north, sunny central, and not available south. In the north, relative humidity is near 55%, and the dew point is near 23 degrees. In the central part of the state, relative humidity is near 50%, and the dew point is near 25 degrees. In the south, relative humidity is near 60%, and the dew point is near 34 degrees. Winds are from the west at 15 mph north, where conditions are not favorable for spraying due to strong winds. The wind chill is near 29 degrees north. Winds are from the northwest at 9 mph with gusts at 23 mph central, where conditions are not favorable for spraying due to strong winds. Winds are variable at 7 mph south, where conditions are not favorable for spraying due to not available. Based on current available observations, the highest temperature is 280/ degrees at Northerly Island. The lowest temperature is 35 degrees at 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 GRUNDY 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 GRUNDY 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 mid 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 upper 30s. West winds 5 to 10 mph.
MONDAY
Sunny in the morning, then becoming partly cloudy. Highs in the mid 60s. Southwest winds 10 to 20 mph. Gusts up to 30 mph in the afternoon.
MONDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Chance of precipitation 40 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 chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 30s. Chance of precipitation 30 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. A chance of showers after midnight. Lows in the mid 40s. Chance of precipitation 40 percent.
FRIDAY
Mostly cloudy. A chance of showers. Highs in the mid 60s. Chance of precipitation 50 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