The most recent reported hail day was 2026-03-22, 131 days ago. Effingham County is hit in about half the years on record. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2026-02-19 near Dieterich.
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 2026-03-22, around Effingham. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Effingham 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 15 separate hail days here since 2010 -- 0.9 a year over 17 years of record. They carry 26 reports in total: most hail days here are logged from a single spot. 7 of those 17 years produced none at all. One year dominates the record: 2025 alone produced 4 of the 15 days. The last five years have run hotter than the long-run rate: 8 days since 2022, against 0.6 a year before that.
Most hail here stays under 2 inches: only 1 of the 15 days on record passed it, 7%, the last on 2026-02-19. Those big days do not follow the county's usual calendar: most of them fall in February, not March. 5 of the 15 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Illinois, see the Illinois hail map and history.
Reports cluster nearest Effingham -- 7 of the county's 15 hail days -- then Altamont (4) and Dieterich (3). That one town is named on 47% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Effingham | 5 | 1.75″ |
| Dieterich | 3 | 2.50″ |
| Altamont | 3 | 1.25″ |
| 1 E Moccasin | 1 | 1.75″ |
| 1 S Effingham | 1 | 1.75″ |
The season runs March through August: 12 of the 15 hail days on record fall in those 6 months (80%). March is the single busiest month, with 4 of them (27%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in February, September and October, outside that window. Reports span 8 of the 12 calendar months; the other 4 have never produced one.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 4 |
| April | 2 |
| May | 2 |
| June | 2 |
| August | 2 |
| September | 1 |
| October | 1 |
That day put 1 report on the map, the biggest 1 inch near Effingham. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-03-22 | 1.00″ | 1 |
| 2026-02-19 | 2.50″ | 5 |
| 2025-09-20 | 1.00″ | 1 |
| 2025-05-16 | 1.75″ | 1 |
| 2025-03-30 | 1.00″ | 1 |
| 2025-03-14 | 1.75″ | 2 |
| 2023-08-06 | 1.75″ | 3 |
| 2022-08-01 | 1.25″ | 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 2.5 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: Shelby County (14 hail days), Clay County (14) and Coles County (22). Effingham County sits in between.
Shelby County · Clay County · Coles County
Back to the Illinois hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Effingham County, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.