De Kalb County rain reports, Illinois
De Kalb County, Illinois has 3 reports of rain for 2026, the heaviest storm total 4.25 inches at Somonauk on September 17, 2026, reported to the National Weather Service.
as of
County standing in Illinois
During 2026, De Kalb County places 15 among 23 counties in Illinois by number of reports filed. De Kalb County accounts for 2% of the 190 reports recorded in Illinois for this period. Illinois's largest figure for the 2026 period came from Knox County, at 4.41 inches. The De Kalb County reports trace back to 1 storm.
| Rank among counties | 15 / 23 |
|---|---|
| Share of state reports | 2% |
| State's largest this period | 4.41 inches, Knox |
| Distinct storms | 1 |
Each figure here comes from Local Storm Reports, and the numbers cover only the stated period. A county with more spotters can rank high on reporting volume, whatever the weather did.
Rain reports in 2026
| Amount | Place | Reported by | Time |
|---|---|---|---|
| 2.69 inches | 1 W DeKalb | Trained Spotter | , September 17, 2026 |
| 2.94 inches | 1 SE Cortland | Public | , September 17, 2026 |
| 4.25 inches | Somonauk | Trained Spotter | , September 17, 2026 |
An observer's name and the total they measured come with every National Weather Service Local Storm Report that lists De Kalb County in the county field.
Storms behind the totals
- Rain totals for September 17, 2026 4.25 inches Somonauk, IL
Days with rain reports
National Weather Service offices file Local Storm Reports; the Iowa Environmental Mesonet of Iowa State University relays them to this page, where they appear as live spotter reports. Under 17 U.S.C. 105, no copyright attaches to the government-produced figures on this page, including reports, alerts, station observations, and normals, which were created by the National Weather Service and other NOAA offices. The notice that 17 U.S.C. 403 requires appears in this sentence. It does not imply endorsement by or affiliation with those agencies. See: Data sources and attribution.