The most recent reported hail day was 2024-08-20 -- 1 year ago, with nothing reported since. Gallatin County is hit in about half the years on record. 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 2010-06-30 near Belgrade.
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 2024-08-20, around Manhattan. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Gallatin 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 19 separate hail days here since 2010 -- 1.1 a year over 17 years of record. Those days carry 41 separate reports between them, two or three on a typical one. 9 of those 17 years produced none at all. One year dominates the record: 2024 alone produced 5 of the 19 days. The last five years track the long-run rate, with 7 days since 2022.
Most hail here stays under 2 inches: only 1 of the 19 days on record passed it, 5%, the last on 2010-06-30. Those big days do not follow the county's usual calendar: most of them fall in June, not July. 5 of the 19 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 Bozeman -- 8 of the county's 19 hail days -- then Gallatin Gateway (4), Manhattan (4), Belgrade (3) and Bozeman Hot Sprin (3). That one town is named on 42% of them. Beyond those, NOAA names Bozeman Hot Spring on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Bozeman | 3 | 1.50″ |
| 5 E Gallatin Gateway | 3 | 1.00″ |
| 4 Ese Belgrade | 2 | 2.75″ |
| 2 ENE Manhattan | 2 | 1.00″ |
| 5 W Bozeman | 1 | 2.00″ |
The season runs June through August: 18 of the 19 hail days on record fall in those 3 months (95%). July is the single busiest month, with 7 of them (37%). 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 | 1 |
| June | 5 |
| July | 7 |
| August | 6 |
That day put 1 report on the map, the biggest 1 inch near Manhattan. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2024-08-20 | 1.00″ | 1 |
| 2024-08-19 | 1.00″ | 1 |
| 2024-08-06 | 1.00″ | 2 |
| 2024-07-25 | 1.00″ | 2 |
| 2024-06-30 | 1.00″ | 2 |
| 2023-07-28 | 1.75″ | 4 |
| 2023-05-25 | 1.75″ | 2 |
| 2020-08-03 | 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: Park County (14 hail days), Jefferson County (18) and Sweet Grass County (25). Gallatin County sits in between.
Park County · Jefferson County · Sweet Grass 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, Gallatin County, Montana only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.