Hill County, Montana Hail Map & History
Hill County was hit as recently as 2026-08-23, 22 days ago. Hill County is hit in most years. 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 2015-07-04 near Havre.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Montana. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-08-23, around Kremlin. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Hill 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 Hill County
NOAA's Storm Prediction Center has logged 21 separate hail days here since 2010 -- 1.2 a year over 17 years of record. Those days carry 47 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 2020, with 3 hail days. The last five years have been quieter than the long run: 4 days since 2022, against 1.4 a year before that.
5 of the 21 days reached 2 inches or more -- 24%, or about one hail day in 4, the last on 2024-07-13. Those big days do not follow the county's usual calendar: most of them fall in July, not June. 10 of the 21 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Montana, see the Montana hail map and history.
Hardest-hit places in Hill County
Reports cluster nearest Havre -- 14 of the county's 21 hail days -- then Kremlin (6), Box Elder (3), Rocky Boy (2) and Gildford (2). That one town is named on 67% of them. Beyond those, NOAA names Hingham, Rudyard and Inverness on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Havre | 4 | 4.50″ |
| 1 ENE Havre | 3 | 2.75″ |
| Rocky Boy | 2 | 2.00″ |
| Box Elder | 2 | 1.75″ |
| Kremlin | 2 | 1.75″ |
When it hails in Hill County
The season runs June through August: 19 of the 21 hail days on record fall in those 3 months (90%). June is the single busiest month, with 7 of them (33%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in May, outside that window. Reports span 4 of the 12 calendar months; the other 8 have never produced one.
| Month | Hail days |
|---|---|
| May | 2 |
| June | 7 |
| July | 7 |
| August | 5 |
Recent Hill County hail days
That day put 2 reports on the map, the biggest 1 inch near Kremlin. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-23 | 1.00″ | 2 |
| 2025-08-20 | 1.25″ | 1 |
| 2024-07-13 | 3.00″ | 6 |
| 2022-07-06 | 2.50″ | 5 |
| 2020-07-07 | 1.75″ | 2 |
| 2020-06-27 | 1.00″ | 1 |
| 2020-06-21 | 1.00″ | 1 |
| 2019-07-06 | 1.00″ | 1 |
How to read the Hill 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 4.5 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: Blaine County (20 hail days), Chouteau County (25) and Toole County (14). Hill County sits in between.
Blaine County · Chouteau County · Toole County
Back to the Montana hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Hill County, Montana only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.