The most recent reported hail day was 2026-04-17, 105 days ago. Jo Daviess County is hit in about half the years on record. The largest stone on record here is 2 inches, a hen egg and twice the National Weather Service's 1 inch severe criterion, reported on 2026-03-10 near Woodbine.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Illinois. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-04-17, around Rice. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Jo Daviess County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 18 separate hail days here since 2010 -- 1.1 a year over 17 years of record. Those days carry 40 separate reports between them, two or three on a typical one. 7 of those 17 years produced none at all. The busiest single year was 2026, with 3 hail days. The last five years have run hotter than the long-run rate: 7 days since 2022, against 0.9 a year before that.
Most hail here stays under 2 inches: only 1 of the 18 days on record passed it, 6%, the last on 2026-03-10. Those big days do not follow the county's usual calendar: most of them fall in March, not April. Golf-ball size is rarer still: 1.75 inches or more on 3 of the 18 days.
Across the whole of Illinois, see the Illinois hail map and history.
Reports cluster nearest Galena -- 5 of the county's 18 hail days -- then Hanover (4), Nora (3), Woodbine (2) and East Dubuque (2). Beyond those, NOAA names Stockton on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Hanover | 2 | 1.50″ |
| Nora | 2 | 1.50″ |
| 1 SE Galena | 2 | 1.25″ |
| 2 SE Woodbine | 1 | 2.00″ |
| 1 E Rodden | 1 | 1.75″ |
The season runs February through July: 15 of the 18 hail days on record fall in those 6 months (83%). April is the single busiest month, with 8 of them (44%). That peak sits inside the window rather than at either end. Hail has also been reported in August, September and November, outside that window. January, October and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| February | 2 |
| March | 2 |
| April | 8 |
| May | 1 |
| June | 1 |
| July | 1 |
| August | 1 |
| September | 1 |
| November | 1 |
That day put 14 reports on the map, the biggest 1.75 inches near Rice. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-17 | 1.75″ | 14 |
| 2026-04-15 | 1.00″ | 1 |
| 2026-03-10 | 2.00″ | 3 |
| 2024-02-08 | 1.00″ | 1 |
| 2023-04-19 | 1.00″ | 2 |
| 2023-04-04 | 1.75″ | 3 |
| 2022-11-04 | 1.25″ | 1 |
| 2017-04-09 | 1.00″ | 1 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own, over the state line included: Stephenson County (21 hail days), Whiteside County (26), Ogle County (25), Dubuque County, Iowa (27) and Grant County, Wisconsin (28). Every one of them takes more hail than Jo Daviess County.
Stephenson County · Whiteside County · Ogle County · Dubuque County, Iowa · Grant County, Wisconsin
Back to the Illinois hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Jo Daviess County, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.