Polk County, Missouri Hail Map & History
Polk County was hit as recently as 2026-08-06, 39 days ago. Polk County is hit in most years, often more than once. The largest stone on record here is 4 inches, a grapefruit and 4 times the National Weather Service's 1 inch severe criterion, reported on 2022-04-21 near Fair Play.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Missouri. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-08-06, around Pleasant Hope. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Polk 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 Polk County
NOAA's Storm Prediction Center has logged 38 separate hail days here since 2010 -- 2.2 a year over 17 years of record. Those days carry 106 separate reports between them, two or three on a typical one. 3 of those 17 years produced none at all. The busiest single year was 2024, with 5 hail days. The last five years have run hotter than the long-run rate: 17 days since 2022, against 1.8 a year before that.
7 of the 38 days reached 2 inches or more -- 18%, or about one hail day in 5, the last on 2026-04-26. Those big days do not follow the county's usual calendar: most of them fall in April, not May. 13 of the 38 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Missouri, see the Missouri hail map and history.
Hardest-hit places in Polk County
Reports cluster nearest Bolivar -- 16 of the county's 38 hail days -- then Pleasant Hope (9), Morrisville (8), Half Way (8) and Fair Play (5). That one town is named on 42% of them. Beyond those, NOAA names Flemington, Humansville, Polk, Brighton, Louisburg, Aldrich, Dunnegan and Olive on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Bolivar | 7 | 2.75″ |
| Pleasant Hope | 6 | 1.25″ |
| Flemington | 4 | 2.75″ |
| Half Way | 4 | 2.00″ |
| Morrisville | 4 | 1.75″ |
When it hails in Polk County
The season runs March through July: 31 of the 38 hail days on record fall in those 5 months (82%). May is the single busiest month, with 12 of them (32%). That peak sits inside the window rather than at either end. Hail has also been reported in February, August, September and December, outside that window. January, October and November are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| February | 2 |
| March | 3 |
| April | 11 |
| May | 12 |
| June | 2 |
| July | 3 |
| August | 2 |
| September | 2 |
| December | 1 |
Recent Polk County hail days
That day put 1 report on the map, the biggest 1.25 inches near Pleasant Hope. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-06 | 1.25″ | 1 |
| 2026-06-25 | 1.00″ | 1 |
| 2026-04-28 | 1.00″ | 1 |
| 2026-04-26 | 2.75″ | 5 |
| 2025-09-17 | 1.00″ | 1 |
| 2025-08-10 | 1.00″ | 1 |
| 2024-06-08 | 1.00″ | 1 |
| 2024-05-26 | 1.00″ | 2 |
How to read the Polk 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 4 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: Dallas County (25 hail days), Hickory County (22) and Greene County (79). Polk County sits in between.
Dallas County · Hickory County · Greene County
Back to the Missouri hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Polk County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.