The most recent reported hail day was 2026-04-26, 96 days ago. Leavenworth County is hit in most years, often more than once. The largest stone on record here is 4.5 inches, a softball and 4.5 times the National Weather Service's 1 inch severe criterion, reported on 2011-08-19 near Leavenworth.
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 2026-04-26, around Tonganoxie. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Leavenworth 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 39 separate hail days here since 2010 -- 2.3 a year over 17 years of record. Those days carry 99 separate reports between them, two or three on a typical one. 4 of those 17 years produced none at all. The busiest single year was 2011, with 7 hail days. The last five years track the long-run rate, with 11 days since 2022.
Most hail here stays under 2 inches: only 3 of the 39 days on record passed it, 8%, the last on 2016-08-24. Those big days do not follow the county's usual calendar: most of them fall in August, not April. 11 of the 39 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Kansas, see the Kansas hail map and history.
Reports cluster nearest Leavenworth -- 14 of the county's 39 hail days -- then Tonganoxie (10), Basehor (9), Lansing (5) and Easton (4). Beyond those, NOAA names Bonner Springs, Jarbalo, Easton Ks, Reno, Linwood, Ft Leavenworth, De Soto, Fort Leavenworth and Fairmount on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Leavenworth | 8 | 4.50″ |
| Tonganoxie | 6 | 1.75″ |
| Basehor | 5 | 1.00″ |
| Lansing | 3 | 1.75″ |
| Ft Leavenworth | 2 | 1.75″ |
The season runs April through August: 32 of the 39 hail days on record fall in those 5 months (82%). April is the single busiest month, with 10 of them (26%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in February, March, September and October, outside that window. January, November and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 3 |
| April | 10 |
| May | 8 |
| June | 2 |
| July | 6 |
| August | 6 |
| September | 1 |
| October | 2 |
That day put 3 reports on the map, the biggest 1 inch near Tonganoxie. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-26 | 1.00″ | 3 |
| 2026-03-10 | 1.00″ | 1 |
| 2025-10-17 | 1.00″ | 1 |
| 2025-05-19 | 1.25″ | 3 |
| 2025-04-01 | 1.00″ | 1 |
| 2024-07-11 | 1.75″ | 8 |
| 2024-05-26 | 1.00″ | 1 |
| 2024-04-30 | 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 4.5 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, over the state line included: Wyandotte County (26 hail days), Jefferson County (35), Johnson County (61) and Platte County, Missouri (49). Leavenworth County sits in between.
Wyandotte County · Jefferson County · Johnson County · Platte County, Missouri
Back to the Kansas hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Leavenworth County, Kansas only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.