Trenton, IL Warnings, Watches and Advisories
NWS Active Alerts for IL - Map View
Frost Advisory
Bond; Fayette; Clinton; Marion; Washington; Randolph; Madison; St. Clair; Monroe; Franklin; Jefferson; Crawford; Washington; St. Francois; Ste. Genevieve; Iron; Madison; Reynolds
Frost Advisory issued October 17 at 9:02AM CDT until October 18 at 9:00AM CDT by NWS St Louis MO
* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of south central and southwest Illinois and east central and southeast Missouri. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Minor
Likely
Expected
October 17th, 2026 09:02:00 am CDT
October 17th, 2026 09:02:00 am CDT
October 18th, 2026 12:15:00 am CDT
Frost Advisory
Montgomery
Frost Advisory issued October 17 at 9:02AM CDT until October 18 at 9:00AM CDT by NWS St Louis MO
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Montgomery IL County. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Minor
Likely
Expected
October 17th, 2026 09:02:00 am CDT
October 17th, 2026 09:02:00 am CDT
October 18th, 2026 12:15:00 am CDT
Frost Advisory
Christian
Frost Advisory issued October 17 at 8:41AM CDT until October 18 at 9:00AM CDT by NWS Lincoln IL
* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...A portion of central Illinois. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Minor
Likely
Expected
October 17th, 2026 08:41:00 am CDT
October 17th, 2026 08:41:00 am CDT
October 17th, 2026 08:00:00 pm CDT
Frost Advisory
McLean; De Witt; Piatt; Champaign; Vermilion; Macon; Moultrie; Douglas; Coles; Edgar; Shelby; Cumberland; Clark; Effingham; Jasper; Crawford; Clay; Richland; Lawrence
Frost Advisory issued October 17 at 8:41AM CDT until October 18 at 9:00AM CDT by NWS Lincoln IL
* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of central, east central, and southeast Illinois. * WHEN...From 1 AM to 9 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Minor
Likely
Expected
October 17th, 2026 08:41:00 am CDT
October 17th, 2026 08:41:00 am CDT
October 17th, 2026 08:00:00 pm CDT
Frost Advisory
Kankakee; Livingston; Iroquois; Ford; Eastern Will; Lake; Porter; Newton; Jasper; Benton
Frost Advisory issued October 17 at 7:56AM CDT until October 18 at 8:00AM CDT by NWS Chicago IL
* WHAT...Low temperatures in the low to mid 30s will result in frost formation. * WHERE...In Illinois, Livingston, Ford, Iroquois, Eastern Will, and Kankakee Counties. In Indiana, Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 3 AM CDT /4 AM EDT/ to 8 AM CDT /9 AM EDT/ Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Minor
Likely
Expected
October 17th, 2026 07:56:00 am CDT
October 17th, 2026 07:56:00 am CDT
October 17th, 2026 06:00:00 pm CDT
Frost Advisory
Jefferson; Wayne; Edwards; Wabash; Perry; Franklin; Hamilton; White; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Gibson; Pike; Posey; Vanderburgh; Warrick; Spencer; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Henderson; Daviess; McLean; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid
Frost Advisory issued October 17 at 12:00AM CDT until October 18 at 8:00AM CDT by NWS Paducah KY
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From 9 PM CDT /10 PM EDT/ this evening to 8 AM CDT /9 AM EDT/ Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Minor
Likely
Expected
October 17th, 2026 12:00:00 am CDT
October 17th, 2026 12:00:00 am CDT
October 17th, 2026 03:00:00 pm CDT
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Trenton.
Use the Radar Maps link provided to understand the trajectory of a storm.
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.