Sioux County was hit as recently as 2026-07-03, 28 days ago. Sioux County is hit in most years. The largest stone on record here is 5 inches and 5 times the National Weather Service's 1 inch severe criterion, reported on 2010-07-13 near Fort Yates.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in North Dakota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-03, around Fort Yates. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Sioux 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 31 separate hail days here since 2010 -- 1.8 a year over 17 years of record. They carry 52 reports in total: most hail days here are logged from a single spot. 3 of those 17 years produced none at all. One year dominates the record: 2016 alone produced 8 of the 31 days. The last five years have been quieter than the long run: 6 days since 2022, against 2.1 a year before that.
3 of the 31 days reached 2 inches or more -- 10%, or about one hail day in 10, the last on 2016-07-09. They land in the same month as everything else, July. 10 of the 31 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of North Dakota, see the North Dakota hail map and history.
Reports cluster nearest Selfridge -- 10 of the county's 31 hail days -- then Fort Yates (7), Solen (6), Porcupine (4) and Saint Gertrude (3). Beyond those, NOAA names Cannon Ball, Prairie Knights Re, Prairie Knights Resort and Shields on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Selfridge | 6 | 1.00″ |
| Solen | 5 | 4.25″ |
| Fort Yates | 2 | 1.75″ |
| Prairie Knights Resort | 2 | 1.75″ |
| 1 ENE Selfridge | 2 | 1.00″ |
The season runs May through July: 26 of the 31 hail days on record fall in those 3 months (84%). July is the single busiest month, with 16 of them (52%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in August and September, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| May | 4 |
| June | 6 |
| July | 16 |
| August | 4 |
| September | 1 |
That day put 1 report on the map, the biggest 1.5 inches near Fort Yates. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-03 | 1.50″ | 1 |
| 2025-09-12 | 1.50″ | 3 |
| 2024-08-28 | 1.75″ | 2 |
| 2024-05-19 | 1.75″ | 4 |
| 2023-08-01 | 1.00″ | 1 |
| 2023-07-30 | 1.50″ | 3 |
| 2021-06-08 | 1.75″ | 1 |
| 2019-07-17 | 1.00″ | 2 |
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 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: Grant County (56 hail days), Emmons County (29), Morton County (64) and Corson County, South Dakota (49). Sioux County sits in between.
Grant County · Emmons County · Morton County · Corson County, South Dakota
Back to the North Dakota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Sioux County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.