Powder River County was hit as recently as 2026-06-27, 34 days ago. Powder River County is hit in most years, and usually several times over. The largest stone on record here is 4.25 inches and 4.2 times the National Weather Service's 1 inch severe criterion, reported on 2013-08-03 near Broadus.
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 2026-06-27, around Biddle. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Powder River 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 60 separate hail days here since 2010 -- 3.5 a year over 17 years of record. Those days carry 146 separate reports between them, two or three on a typical one. No year since 2010 has gone by without at least one. The busiest single year was 2019, with 8 hail days. The last five years track the long-run rate, with 13 days since 2022.
11 of the 60 days reached 2 inches or more -- 18%, or about one hail day in 5, the last on 2025-06-20. They land in the same month as everything else, June. 25 of the 60 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Montana, see the Montana hail map and history.
Reports cluster nearest Broadus -- 30 of the county's 60 hail days -- then Biddle (11), Olive (9), Epsie (8) and Moorhead (6). That one town is named on 50% of them. Beyond those, NOAA names Volborg, Boyes, Otter, Powderville, Belle Creek, Ashland and Sonnette on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| 10 W Broadus | 8 | 1.75″ |
| Broadus | 7 | 2.50″ |
| Biddle | 5 | 4.25″ |
| 14 SSE Broadus | 5 | 1.00″ |
| 10 NE Moorhead | 4 | 2.75″ |
The season runs June through August: 51 of the 60 hail days on record fall in those 3 months (85%). June is the single busiest month, with 26 of them (43%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in April, May 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 | 26 |
| July | 16 |
| August | 9 |
| September | 2 |
That day put 1 report on the map, the biggest 1.75 inches near Biddle. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-27 | 1.75″ | 1 |
| 2026-06-07 | 1.75″ | 3 |
| 2025-08-04 | 1.25″ | 1 |
| 2025-07-23 | 1.00″ | 1 |
| 2025-07-20 | 1.50″ | 3 |
| 2025-06-20 | 2.50″ | 1 |
| 2025-06-12 | 1.75″ | 3 |
| 2025-04-27 | 2.00″ | 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 4.25 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: Carter County (60 hail days), Custer County (43) and Rosebud County (50). Powder River County sits in between.
Carter County · Custer County · Rosebud County
Back to the Montana hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Powder River County, Montana only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.