The most recent reported hail day was 2025-06-28, 398 days ago. Foster County is hit in most years. The largest stone on record here is 1.75 inches, a golf ball and 1.8 times the National Weather Service's 1 inch severe criterion, reported on 2021-08-22 near Barlow.
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 2025-06-28, around Mchenry. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Foster 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 17 separate hail days here since 2010 -- 1.0 a year over 17 years of record. They carry 30 reports in total: most hail days here are logged from a single spot. 6 of those 17 years produced none at all. The busiest single year was 2015, with 3 hail days. The last five years have been quieter than the long run: 2 days since 2022, against 1.2 a year before that.
No stone of 2 inches or more has ever been reported in Foster County: all 17 hail days on record topped out below that. Golf-ball size is rarer still: 1.75 inches or more on 4 of the 17 days.
Across the whole of North Dakota, see the North Dakota hail map and history.
Reports cluster nearest Barlow -- 6 of the county's 17 hail days -- then Carrington (6), Grace City (4), Mchenry (3) and Juanita (2).
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Carrington | 3 | 1.75″ |
| 3 W Mchenry | 3 | 1.25″ |
| Barlow | 3 | 1.25″ |
| 1 S Grace City | 2 | 1.75″ |
| 2 W Carrington | 1 | 1.75″ |
The season runs June through August: 15 of the 17 hail days on record fall in those 3 months (88%). June is the single busiest month, with 7 of them (41%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in September, outside that window. Reports span 4 of the 12 calendar months; the other 8 have never produced one.
| Month | Hail days |
|---|---|
| June | 7 |
| July | 5 |
| August | 3 |
| September | 2 |
That day put 1 report on the map, the biggest 1.25 inches near Mchenry. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-06-28 | 1.25″ | 1 |
| 2022-06-24 | 1.00″ | 1 |
| 2021-08-22 | 1.75″ | 2 |
| 2021-08-09 | 1.75″ | 5 |
| 2020-06-07 | 1.25″ | 1 |
| 2019-09-02 | 1.25″ | 2 |
| 2017-07-21 | 1.00″ | 1 |
| 2017-06-09 | 1.75″ | 4 |
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 1.75 inches, which is the red band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Eddy County (35 hail days), Wells County (31) and Griggs County (25). Every one of them takes more hail than Foster County.
Eddy County · Wells County · Griggs County
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, Foster County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.