Detailed Forecast
Today
Mostly sunny and hot, with a high near 96. Heat index values as high as
104. South southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly clear, with a low around 77. South southwest wind 5 to 10 mph,
with gusts as high as 15 mph.
Tuesday
Sunny and hot, with a high near 98. Heat index values as high as 110.
Southwest wind 5 to 10 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am.
Partly cloudy, with a low around 75. West northwest wind around 5 mph,
with gusts as high as 10 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly
sunny, with a high near 85. North northeast wind 5 to 10 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight
chance of showers between 10pm and 1am. Partly cloudy, with a low
around 70. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly
sunny, with a high near 84.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around
70.
Friday
A chance of showers before 1pm. Mostly sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 80.
Additional Forecasts and Information
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
428 AM CDT Mon Aug 26 2024
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-270930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
428 AM CDT Mon Aug 26 2024 /528 AM EDT Mon Aug 26 2024/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Significant Excessive Heat Risk.
DISCUSSION...
Hot and humid with will continue to build across the area today.
Areas from Chicago west and southwest will see peak afternoon heat
indices around 105 degrees.
Thunderstorms are expected to move east across Wisconsin late
tonight. There is a slight (less than 20 percent) chance that some
of these storms could clip far northern or northeast Illinois,
mainly north of Interstate 90. If storms do affect the area late
tonight, they may be capable of producing localized damaging wind
gusts to 60 mph.
DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk.
Significant to Extreme Excessive Heat Risk.
Wednesday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Thunderstorm Risk.
Friday...
Limited Thunderstorm Risk.
DISCUSSION...
Dangerously hot and humid weather conditions will persist
Tuesday, likely with the hottest temperatures of the year in many
locations. Peak afternoon heat indices of 105 to 115 degrees are
forecast.
There is a slight chance of isolated to scattered thunderstorms
early Tuesday morning, mainly north of I-90. There is a greater
chance (around 40 percent) of scattered thunderstorms late Tuesday
afternoon and Tuesday night. Some of these storms could be
severe, with damaging winds the primary threat, and isolated large
hail also possible.
SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east-southeast at 25 mph.
$$
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