Johnson County 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
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 JOHNSON County
Issued at 100 AM CDT FRI APR 19 2024

SOUTH-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CARBONDALE CLOUDY 57 54 89 NW13G22 30.00R TC 14 6HR MIN TEMP: 57; 6HR MAX TEMP: 73; 6HR PCP: 0.87; CAIRO* CLOUDY 64 60 86 N13G20 29.98R TC 18 MARION LGT RAIN 56 55 96 NW7 29.99R TC 14 MT. VERNON CLOUDY 56 55 97 VRB7 29.98R TC 13 CENTRALIA* CLOUDY 54 52 93 N20G25 30.01R FOG TC 12 SALEM* CLOUDY 55 53 95 N16G25 30.00R FOG TC 13 METROPOLIS* LGT RAIN 66 61 82 NW16G25 29.96R TC 19

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 100am CDT, Friday April 19, 2024

Across Illinois...temperatures are near 50 degrees north and near 57 degrees south. Current sky conditions are cloudy north and cloudy south. In the north, relative humidity is near 86%, and the dew point is near 46 degrees. In the south, relative humidity is near 100%, and the dew point is near 57 degrees. Winds are from the northwest at 8 mph with gusts at 20 mph north, where conditions are not favorable for spraying due to strong winds. Winds are unavailable central. Winds are variable at 7 mph south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 57 degrees at Mount Vernon. The lowest temperature is 10/ degrees at Northerly Island.

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 JOHNSON County,IL

135 PM CDT Thu Apr 18 2024 /235 PM EDT Thu Apr 18 2024/ DAY ONE This Afternoon and Tonight The threat of storms will increase to a peak this evening, with all severe hazards in play. The greatest risk is for damaging winds, with large hail and tornadoes also posing potential risks. Frequent deadly lightning and locally heavy rains capable of sporadic flooding are also potential hazards. DAYS TWO THROUGH SEVEN Friday through Wednesday Lows in the upper 30s are possible this weekend, with Sunday night perhaps the best chance for frost to develop as skies clear and winds diminish then. These cooler temperatures and thus the chance of frost appears greatest along and north of the Ohio River. SPOTTER INFORMATION STATEMENT Spotter activation is requested for our ongoing active severe weather watch.
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For JOHNSON County, IL
1245 AM CDT Fri Apr 19 2024 OVERNIGHT
Cloudy with a chance of showers and thunderstorms. Some thunderstorms may produce damaging winds and large hail. Lows around 50. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent.
FRIDAY
Mostly sunny. Cooler with highs in the mid 60s. North winds 15 to 20 mph.
FRIDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the mid 40s. North winds 5 to 10 mph.
SATURDAY
Mostly sunny. Highs in the lower 60s. North winds 5 to 10 mph.
SATURDAY NIGHT
Mostly cloudy. Lows in the lower 40s. North winds 5 to 10 mph.
SUNDAY
Partly sunny in the morning, then clearing. Highs in the lower 60s.
SUNDAY NIGHT
Mostly clear. Lows in the upper 30s.
MONDAY
Sunny. Highs in the upper 60s.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
TUESDAY
Partly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 40 percent.
TUESDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 40 percent.
WEDNESDAY
Mostly sunny. Highs in the upper 60s.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
THURSDAY
Mostly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 30 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 24-28 APR 26-MAY 2 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
Friday April 19, 2024 the 110th Day of Year --------------------------------------------------- SUN Declination 11.700000 Distance 0.999719 AU Rise 07:14 EDT Set 20:43 EDT Transit Meridian 13:57 EDT Civil Twilight Begins 06:47 EDT Ends 21:10 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 19TH HISTORIC WEATHER EVENTS ...1775... The first engagement of the Revolutionary War took place under clear crisp weather at Lexington-Concord. (Sandra and TI Richard Sanders - 1987) ...1941... The temperature at Sodus NY soared to 95 degrees. The next day Albany NY reported a record for April of 93 degrees. (The Weather Channel) ...1973... Glenrock WY received 41 inches of snow in just 24 hours, and a storm total of 58 inches, to establish two state records. (18th-20th) (David Ludlum) (The Weather Channel) ...1976... The northeastern U.S. was in the midst of an early season heat wave, and the Boston Marathon took place in 90 degree heat. At Providence RI the mercury hit 98 degrees. (David Ludlum)

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