McCone County was hit as recently as 2026-06-27, 34 days ago. McCone 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 2013-07-20 near Circle.
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 Circle. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls McCone 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 43 separate hail days here since 2010 -- 2.5 a year over 17 years of record. Those days carry 103 separate reports between them, two or three on a typical one. Exactly one year since 2010 passed with no reported hail day at all. The busiest single year was 2013, with 7 hail days. The last five years track the long-run rate, with 9 days since 2022.
Roof-killing hail is routine here: 12 of the 43 days reached 2 inches or more, 28% of them, the last on 2026-06-06. They land in the same month as everything else, July. 20 of the 43 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 Circle -- 20 of the county's 43 hail days -- then Vida (11), Brockway (9), Flowing Wells Rest (5) and Weldon (5). That one town is named on 47% of them. Beyond those, NOAA names Haxby, Nelson Creek Rec, Fort Peck, Wolf Point, Frazer, Nelson Creek Rec Area and Watkins on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Circle | 5 | 2.00″ |
| 5 S Vida | 3 | 1.75″ |
| 1 N Flowing Wells Rest | 3 | 1.00″ |
| 11 Nne Circle | 2 | 2.75″ |
| 9 Se Flowing Wells Rest | 2 | 2.75″ |
The season runs May through July: 36 of the 43 hail days on record fall in those 3 months (84%). July is the single busiest month, with 20 of them (47%). 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, outside that window. Reports span 4 of the 12 calendar months; the other 8 have never produced one.
| Month | Hail days |
|---|---|
| May | 7 |
| June | 9 |
| July | 20 |
| August | 7 |
That day put 1 report on the map, the biggest 1 inch near Circle. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-27 | 1.00″ | 1 |
| 2026-06-06 | 2.00″ | 3 |
| 2025-07-19 | 2.00″ | 3 |
| 2025-06-25 | 1.00″ | 1 |
| 2024-08-24 | 1.00″ | 1 |
| 2024-08-21 | 1.00″ | 3 |
| 2024-07-13 | 1.75″ | 2 |
| 2023-07-11 | 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 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: Dawson County (37 hail days), Prairie County (33) and Garfield County (48). McCone County sits in between.
Dawson County · Prairie County · Garfield 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, McCone County, Montana only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.