Freeze Warning
FREEZE WARNING REMAINS IN EFFECT FROM 5 AM TO 8 AM CDT SATURDAY
Take steps now to protect tender plants from the cold.
DeKalb County, Illinois: tornado and severe weather warnings
A freeze warning is in effect for DeKalb County as of 7:36 PM CDT.
Open the live map on DeKalb County Get a message when a warning reaches your address
The map shows radar, every warning shape, and the path and arrival time of each storm cell headed toward the center of DeKalb County. Tap your own street on it for times that apply to you.
The last 12 months in DeKalb County
- 2 tornado warnings
- 36 severe thunderstorm warnings
- 4 flash flood warnings
- 5 tornado watches
- 12 severe thunderstorm watches
The most recent tornado warning that included DeKalb County was issued Apr 17, 2026 by the Weather Service office in Chicago, IL.
| Date | Issued | Type | Office | Product |
|---|---|---|---|---|
| Sep 20, 2026 | 2:12 AM CDT | Flash flood warning | LOT | text |
| Sep 17, 2026 | 7:07 AM CDT | Flash flood warning | LOT | text |
| Aug 21, 2026 | 5:44 PM CDT | Severe thunderstorm warning | LOT | text |
| Aug 21, 2026 | 4:55 PM CDT | Severe thunderstorm warning | LOT | text |
| Aug 21, 2026 | 2:57 PM CDT | Severe thunderstorm warning | LOT | text |
| Aug 21, 2026 | 2:17 PM CDT | Severe thunderstorm warning | LOT | text |
| Aug 12, 2026 | 8:31 AM CDT | Severe thunderstorm warning | LOT | text |
| Aug 11, 2026 | 9:22 AM CDT | Severe thunderstorm warning | LOT | text |
| Jul 4, 2026 | 2:03 PM CDT | Flash flood warning | LOT | text |
| Jul 4, 2026 | 1:53 PM CDT | Severe thunderstorm warning | LOT | text |
| Jul 3, 2026 | 8:56 PM CDT | Severe thunderstorm warning | LOT | text |
| Jul 3, 2026 | 8:22 PM CDT | Severe thunderstorm warning | LOT | text |
A warning counts here if the Weather Service listed DeKalb County in it, even if the warned area covered only part of the county.
Nearby
- Kane County, IL
- Kendall County, IL
- Lee County, IL
- Boone County, IL
- Ogle County, IL
- McHenry County, IL
- DuPage County, IL
- Winnebago County, IL
- All of Illinois
What the alerts mean
Alerts come from the National Weather Service and refresh every minute. Past warnings come from the Iowa Environmental Mesonet's archive of Weather Service products. During a warning, also listen to local radio, TV or a weather radio.