Hail History

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Hail history for De Kalb County, IL

Last hail in the countyAug 21, 20261 in (quarter)
Hail days, last 12 months5
Largest hail since 20062.75 in (baseball)Apr 4, 2023
Hail days since 200641
Days with hail 1 inch or larger24
Tornadoes in the county19
Damaging wind reports in the county233

58 hail reports in De Kalb County since 2006 on 41 days. The largest stones measured 2.75 in (baseball) on Apr 4, 2023.

Cities in De Kalb County

Recent hail in De Kalb County

DateHail sizeWhereSource
Aug 21, 20261 in
quarter		Sycamore
1 hail report		NWS storm report (preliminary)
Jun 24, 20261 in
quarter		Malta
1 hail report		NOAA Storm Events
Apr 14, 20261.25 in
half dollar		Dekalb
4 hail reports		NOAA Storm Events
Mar 31, 20261 in
quarter		Sandwich
1 hail report		NOAA Storm Events
Mar 10, 20261 in
quarter		Somonauk
1 hail report		NOAA Storm Events

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in De Kalb County by year

3063071082092101111123133142151162172183191202122222322425526

When hail season peaks in De Kalb County

1Jan2Feb6Mar8Apr5May7Jun4Jul5Aug1Sep1Oct1NovDec

Damaging thunderstorm winds in De Kalb County

233 reports of damaging thunderstorm wind in De Kalb County since 2006, on 90 days. The strongest measured gust was 75 mph on Mar 31, 2023.

DateStrongest gustWhereSource
Aug 12, 202660 mph, measuredSomonauk
1 wind report		NWS storm report (preliminary)
Aug 11, 2026damage reportedSandwich
1 wind report		NWS storm report (preliminary)
Jul 4, 2026damage reportedDeKalb
1 wind report		NWS storm report (preliminary)
Jul 3, 202658 mph, measuredHinckley, Cortland, Herbert
5 wind reports		NWS storm report (preliminary)
Jun 11, 202658 mph, estimatedEsmond
1 wind report		NOAA Storm Events
Jun 10, 202664 mph, measuredRollo, Hinckley
3 wind reports		NOAA Storm Events
Apr 17, 202664 mph, estimatedRollo, Woodlake Landing Airport
2 wind reports		NOAA Storm Events
Aug 18, 202564 mph, estimatedGenoa, Wilkinson
4 wind reports		NOAA Storm Events
Aug 16, 202572 mph, measuredWilkinson, Dekalb
2 wind reports		NOAA Storm Events
Jul 16, 202563 mph, estimatedNew Lebanon
1 wind report		NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near De Kalb County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).