Keokuk County, Iowa Hail Map & History
Keokuk County was hit as recently as 2026-08-07, 38 days ago. Keokuk County is hit in most years. The largest stone on record here is 3 inches, a teacup and 3 times the National Weather Service's 1 inch severe criterion, reported on 2026-04-02 near Martinsburg.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Iowa. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-08-07, around Keota. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Keokuk 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 ->How often it hails in Keokuk County
NOAA's Storm Prediction Center has logged 24 separate hail days here since 2010 -- 1.4 a year over 17 years of record. They carry 33 reports in total: most hail days here are logged from a single spot. 5 of those 17 years produced none at all. The busiest single year was 2020, with 3 hail days. The last five years track the long-run rate, with 7 days since 2022.
Most hail here stays under 2 inches: only 1 of the 24 days on record passed it, 4%, the last on 2026-04-02. Those big days do not follow the county's usual calendar: most of them fall in April, not May. Golf-ball size is rarer still: 1.75 inches or more on 5 of the 24 days.
Across the whole of Iowa, see the Iowa hail map and history.
Hardest-hit places in Keokuk County
Reports cluster nearest Ollie -- 5 of the county's 24 hail days -- then Sigourney (4), Keswick (3), Webster (3) and Richland (3). Beyond those, NOAA names Keota on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Keota | 2 | 1.75″ |
| 1 W Sigourney | 2 | 1.25″ |
| Ollie | 2 | 1.25″ |
| Richland | 2 | 1.00″ |
| 2 E Martinsburg | 1 | 3.00″ |
When it hails in Keokuk County
The season runs April through August: 20 of the 24 hail days on record fall in those 5 months (83%). May is the single busiest month, with 9 of them (38%). That peak sits inside the window rather than at either end. Hail has also been reported in February, March, September and October, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 1 |
| April | 6 |
| May | 9 |
| August | 5 |
| September | 1 |
| October | 1 |
Recent Keokuk County hail days
That day put 1 report on the map, the biggest 1.75 inches near Keota. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-07 | 1.75″ | 1 |
| 2026-04-02 | 3.00″ | 3 |
| 2024-10-03 | 1.00″ | 2 |
| 2024-08-15 | 1.25″ | 1 |
| 2023-05-07 | 1.25″ | 2 |
| 2023-03-31 | 1.00″ | 1 |
| 2022-08-19 | 1.00″ | 1 |
| 2021-08-26 | 1.75″ | 3 |
How to read the Keokuk County map
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 3 inches, which is the purple band. Look up a street address with the hail history by address tool.
Nearby counties
The nearest counties with a page of their own: Jefferson County (18 hail days), Washington County (25) and Wapello County (18). Keokuk County sits in between.
Jefferson County · Washington County · Wapello County
Back to the Iowa hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Keokuk County, Iowa only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.