McCook County was hit as recently as 2026-07-02, 29 days ago. McCook County is hit in most years, and usually several times over. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2023-07-22 near Spencer.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in South Dakota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-02, around Emery. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls McCook County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
Get free access Check an addressOur US-based call center calls the homeowners in this storm and books roof inspections straight onto your calendar. You work the storm; we fill the schedule. We dial -- you do not have to knock a single door.
See call-center options ->NOAA's Storm Prediction Center has logged 35 separate hail days here since 2010 -- 2.1 a year over 17 years of record. They carry 60 reports in total: most hail days here are logged from a single spot. 2 of those 17 years produced none at all. The busiest single year was 2011, with 5 hail days. The last five years track the long-run rate, with 11 days since 2022.
Most hail here stays under 2 inches: only 2 of the 35 days on record passed it, 6%, the last on 2023-07-22. They land in the same month as everything else, July. 13 of the 35 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of South Dakota, see the South Dakota hail map and history.
Reports cluster nearest Salem -- 13 of the county's 35 hail days -- then Canistota (10), Spencer (6), Bridgewater (5) and Canova (4). Beyond those, NOAA names Dolton, Emery and Montrose on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| 2 W Salem | 2 | 2.50″ |
| 1 Nw Salem | 2 | 1.75″ |
| 3 S Salem | 2 | 1.75″ |
| Canistota | 2 | 1.75″ |
| Salem | 2 | 1.75″ |
The season runs May through August: 29 of the 35 hail days on record fall in those 4 months (83%). July is the single busiest month, with 9 of them (26%). That peak sits inside the window rather than at either end. Hail has also been reported in April and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 2 |
| May | 5 |
| June | 6 |
| July | 9 |
| August | 9 |
| September | 4 |
That day put 1 report on the map, the biggest 1 inch near Emery. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-02 | 1.00″ | 1 |
| 2026-05-24 | 1.50″ | 2 |
| 2025-08-05 | 1.75″ | 1 |
| 2025-07-09 | 1.00″ | 1 |
| 2024-07-31 | 1.00″ | 2 |
| 2024-07-29 | 1.75″ | 1 |
| 2024-06-12 | 1.00″ | 2 |
| 2023-08-10 | 1.50″ | 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 2.75 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: Hanson County (15 hail days), Miner County (14) and Lake County (27). McCook County takes more hail than any of them.
Hanson County · Miner County · Lake County
Back to the South Dakota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, McCook County, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.