Pottawatomie County, Kansas Hail Map & History
Pottawatomie County was hit as recently as 2026-08-18, 27 days ago. Pottawatomie County is hit in most years, and usually several times over. 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 2017-07-22 near Havensville.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Kansas. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-08-18, around Onaga. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Pottawatomie 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 Pottawatomie County
NOAA's Storm Prediction Center has logged 49 separate hail days here since 2010 -- 2.9 a year over 17 years of record. Those days carry 144 separate reports between them, two or three on a typical one. No year since 2010 has gone by without at least one. The busiest single year was 2024, with 5 hail days. The last five years track the long-run rate, with 15 days since 2022.
7 of the 49 days reached 2 inches or more -- 14%, or about one hail day in 7, the last on 2024-06-13. Those big days do not follow the county's usual calendar: most of them fall in June, not April. 19 of the 49 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Kansas, see the Kansas hail map and history.
Hardest-hit places in Pottawatomie County
Reports cluster nearest Olsburg -- 17 of the county's 49 hail days -- then Westmoreland (11), Wamego (10), Manhattan (7) and Louisville (7). Beyond those, NOAA names Blaine, Saint George, Onaga, St. Marys, Belvue, Nnw Westmoreland, St. George and Emmett on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Wamego | 8 | 2.50″ |
| Westmoreland | 7 | 2.75″ |
| Blaine | 6 | 2.50″ |
| 2 W Olsburg | 5 | 1.50″ |
| Nnw Westmoreland | 4 | 1.75″ |
When it hails in Pottawatomie County
The season runs April through August: 40 of the 49 hail days on record fall in those 5 months (82%). April is the single busiest month, with 13 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 March, September and October, outside that window. Reports span 8 of the 12 calendar months; the other 4 have never produced one.
| Month | Hail days |
|---|---|
| March | 3 |
| April | 13 |
| May | 8 |
| June | 13 |
| July | 2 |
| August | 4 |
| September | 4 |
| October | 2 |
Recent Pottawatomie County hail days
That day put 2 reports on the map, the biggest 1.5 inches near Onaga. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-18 | 1.50″ | 2 |
| 2025-05-19 | 1.50″ | 2 |
| 2025-04-28 | 1.00″ | 3 |
| 2024-10-24 | 1.00″ | 1 |
| 2024-06-13 | 2.75″ | 16 |
| 2024-05-06 | 1.00″ | 1 |
| 2024-04-30 | 1.75″ | 3 |
| 2024-03-13 | 1.00″ | 5 |
How to read the Pottawatomie 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: Riley County (53 hail days), Wabaunsee County (47) and Geary County (40). Pottawatomie County sits in between.
Riley County · Wabaunsee County · Geary County
Back to the Kansas hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Pottawatomie County, Kansas only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.