The most recent reported hail day was 2022-07-08 -- 4 years ago, with nothing reported since. Ravalli 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 2012-06-04 near Hamilton.
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 2022-07-08, around Corvallis. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Ravalli 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 21 separate hail days here since 2010 -- 1.2 a year over 17 years of record. Those days carry 41 separate reports between them, two or three on a typical one. 6 of those 17 years produced none at all. The busiest single year was 2022, with 4 hail days. The last five years have been quieter than the long run: 4 days since 2022, against 1.4 a year before that.
No stone of 2 inches or more has ever been reported in Ravalli County: all 21 hail days on record topped out below that. Golf-ball size is rarer still: 1.75 inches or more on 2 of the 21 days.
Across the whole of Montana, see the Montana hail map and history.
Reports cluster nearest Corvallis -- 5 of the county's 21 hail days -- then Hamilton (4), Sula (3), Florence (3) and Grantsdale (3). Beyond those, NOAA names Bell Crossing, Stevensville, Victor, Conner and Skalkaho Pass on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Victor | 2 | 1.50″ |
| 14 Ne Sula | 1 | 1.75″ |
| Hamilton | 1 | 1.75″ |
| 19 E Hamilton | 1 | 1.50″ |
| 3 Sse Florence | 1 | 1.50″ |
The season runs June through August: 19 of the 21 hail days on record fall in those 3 months (90%). July is the single busiest month, with 9 of them (43%). That peak sits inside the window rather than at either end. 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 | 6 |
| July | 9 |
| August | 4 |
That day put 2 reports on the map, the biggest 1.5 inches near Corvallis. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2022-07-08 | 1.50″ | 2 |
| 2022-07-07 | 1.50″ | 3 |
| 2022-07-03 | 1.00″ | 2 |
| 2022-06-18 | 1.00″ | 4 |
| 2021-06-09 | 1.00″ | 2 |
| 2019-07-30 | 1.50″ | 3 |
| 2019-07-06 | 1.00″ | 2 |
| 2019-06-26 | 1.25″ | 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 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: Missoula County (22 hail days), Powell County (14) and Lewis and Clark County (22). Ravalli County sits in between.
Missoula County · Powell County · Lewis and Clark 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, Ravalli County, Montana only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.