Hail history for Montana
8,453 NOAA hail reports across 57 counties and 111 cities and towns since 1955, updated to November 3, 2026.
Readout · Montana
- Last hail
- Sep 13, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 122
- since Nov 3, 2021 · 695 reports
- Largest ever
- 6.00 in
- softball · Jun 3, 1971
8,453 reports on 1,587 days since 1955 · #18 of 51 states
Hail map · Montana
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Counties shaded by all-time hail reports. Select a county for its page.
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Montana is from September 13, 2026. A local roofer can check and document it at no cost.
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What the record says about Montana
The latest hail report in Montana is from September 13, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 122 separate hail days; the biggest stones in that time were 4.00 in on July 13, 2024.
Over the 20 years 2006–2025, Montana logged 4,628 reports on 659 hail days, about 231.4 reports a year. That is 33% more than the median US state (173.9 a year) and ranks #18 of 51 states and DC for all-time reports.
8% of reports with a size were 2 inches (hen egg) or larger, against 3% for the median US state. The largest hail on record here is 6.00 in (softball) on June 3, 1971.
Reports were down 33% in 2016–2025 (1,850) compared with 2006–2015 (2,778). The busiest year was 2001, with 562 reports on 45 days. Hail here peaks in July (38% of reports); 44% fall between April and June.
Reports a year 2006–2025 average
- Montana 231.4
- Median US state 173.9
Hail days 2006–2025
- Montana 659
- Median US state 561
Share 2 in or larger of sized reports
- Montana 8%
- Median US state 3%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 4 | 35 | 26 | 5 | 31 | 101 | |||||||
| 2025 | 5 | 3 | 84 | 60 | 35 | 3 | 190 | ||||||
| 2024 | 2 | 22 | 29 | 39 | 4 | 96 | |||||||
| 2023 | 13 | 16 | 42 | 2 | 2 | 75 | |||||||
| 2022 | 22 | 204 | 7 | 233 | |||||||||
| 2021 | 9 | 77 | 46 | 7 | 139 | ||||||||
| 2020 | 43 | 23 | 96 | 10 | 172 | ||||||||
| 2019 | 13 | 75 | 119 | 83 | 8 | 298 | |||||||
| 2018 | 7 | 77 | 102 | 83 | 5 | 274 | |||||||
| 2017 | 3 | 12 | 19 | 24 | 8 | 66 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 13, 2026 | 5 | 1.00 in | View |
| Sep 7, 2026 | 2 | 2.75 in | View |
| Sep 6, 2026 | 22 | 3.25 in | View |
| Sep 2, 2026 | 2 | 1.00 in | View |
| Aug 26, 2026 | 1 | 0.40 in | View |
| Aug 23, 2026 | 2 | 1.00 in | View |
| Aug 14, 2026 | 2 | 1.00 in | View |
| Jul 18, 2026 | 1 | 1.00 in | — |
| Jul 17, 2026 | 3 | 1.00 in | — |
| Jul 16, 2026 | 10 | 2.00 in | — |
| Jul 14, 2026 | 3 | 2.50 in | — |
| Jul 8, 2026 | 1 | 1.50 in | — |
| Jul 7, 2026 | 2 | 1.50 in | — |
| Jul 5, 2026 | 3 | 1.75 in | — |
| Jul 3, 2026 | 1 | 1.25 in | — |
| Jul 2, 2026 | 2 | 1.00 in | — |
| Jun 27, 2026 | 16 | 2.00 in | — |
| Jun 25, 2026 | 4 | 1.50 in | — |
| Jun 12, 2026 | 1 | 1.00 in | — |
| Jun 7, 2026 | 8 | 3.00 in | — |
| Jun 6, 2026 | 5 | 2.00 in | — |
| Jun 2, 2026 | 1 | 3.00 in | — |
| May 28, 2026 | 4 | 1.25 in | — |
| Sep 12, 2025 | 2 | 1.50 in | — |
| Sep 11, 2025 | 1 | 1.00 in | — |
| Aug 21, 2025 | 1 | 1.00 in | — |
| Aug 20, 2025 | 1 | 1.25 in | — |
| Aug 7, 2025 | 30 | 2.00 in | — |
| Aug 5, 2025 | 2 | 1.25 in | — |
| Aug 1, 2025 | 1 | 2.00 in | — |
| Jul 31, 2025 | 4 | 1.75 in | — |
| Jul 29, 2025 | 5 | 2.00 in | — |
| Jul 28, 2025 | 15 | 2.50 in | — |
| Jul 27, 2025 | 2 | 1.00 in | — |
| Jul 26, 2025 | 2 | 2.75 in | — |
| Jul 25, 2025 | 5 | 1.75 in | — |
| Jul 23, 2025 | 2 | 1.00 in | — |
| Jul 21, 2025 | 5 | 2.00 in | — |
| Jul 20, 2025 | 7 | 1.50 in | — |
| Jul 19, 2025 | 5 | 2.00 in | — |
The 40 most recent of 122 hail days.
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jun 3, 1971 | 6.00 insoftball | — | Powder River | — | 18:05 local · NCEI |
| Jul 11, 1965 | 6.00 insoftball | — | Rosebud | — | 19:00 local · NCEI |
| Jun 18, 2002 | 4.50 insoftball | Alzada | Carter | — | 19:25 local · NCEI |
| Jul 20, 2001 | 4.50 insoftball | 32 W Vida | Mccone | — | 17:00 local · NCEI |
| Jul 20, 2001 | 4.50 insoftball | 30 WSW Vida | Mccone | $30K | 16:35 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 2,735 32%
- 1–2 in 5,049 60%
- 2 in + 642 8%
- No size 27
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Sep 13, 2026 | 1.00 inquarter | 9 W Monarch | Cascade | 23:45 UTC · NWS prelim. |
| Sep 13, 2026 | 0.88 innickel | 9 W Monarch | Cascade | 01:46 UTC · NWS prelim. |
| Sep 13, 2026 | 0.88 innickel | 1 WNW Raynesford | Judith Basin | 00:13 UTC · NWS prelim. |
| Sep 13, 2026 | 0.50 inmarble | 1 E East Helena | Lewis and Clark | 00:12 UTC · NWS prelim. |
| Sep 13, 2026 | 1.00 inquarter | 3 SSE Raynesford | Judith Basin | 00:10 UTC · NWS prelim. |
| Sep 7, 2026 | 0.25 inpea | 5 W Hilger | Fergus | 20:34 UTC · NWS prelim. |
| Sep 7, 2026 | 2.75 inbaseball | 1 SW Shepherd | Yellowstone | 20:30 UTC · NWS prelim. |
| Sep 6, 2026 | 0.50 inmarble | 6 SSE Libby | Lincoln | 23:58 UTC · NWS prelim. |
| Sep 6, 2026 | 0.88 innickel | Deer Lodge | Powell | 23:30 UTC · NWS prelim. |
| Sep 6, 2026 | 1.50 inping pong ball | Opportunity | Deer Lodge | 23:24 UTC · NWS prelim. |
| Sep 6, 2026 | 1.75 ingolf ball | Avon | Powell | 23:20 UTC · NWS prelim. |
| Sep 6, 2026 | 1.00 inquarter | Wisdom | Beaverhead | 22:14 UTC · NWS prelim. |
Cities and towns with the most hail reports
- Billings 218
- Great Falls 65
- Miles City 63
- Hardin 59
- Butte-Silver Bow 50
- Glasgow 43
- Bozeman 39
- Broadus 39
- Colstrip 38
- Fort Peck 38
- Lewistown 38
- Missoula 38
- Wibaux 38
- Laurel 37
- Roundup 37
- Big Timber 36
- Shepherd 36
- Glendive 35
- Baker 33
- Hysham 33
- Ekalaka 32
- Harlowton 30
- Sidney 30
- Terry 30
- Alzada 29
- Ashland 29
- Anaconda-Deer Lodge County 28
- Helena 27
- Hinsdale 27
- Wolf Point 27
- Worden 27
- Crow Agency 26
- Hobson 25
- Lockwood 25
- Deer Lodge 24
- Forsyth 24
- Scobey 24
- Winnett 24
- Circle 23
- Melstone 23
- Columbus 22
- Havre 22
- Nashua 21
- Biddle 20
- Choteau 20
- Fairview 20
- Plentywood 20
- Stanford 20
All 111 cities and towns with 10+ reports
- Jordan 19
- Raynesford 19
- Savage 19
- Zortman 19
- Malta 18
- Bloomfield 17
- Grass Range 17
- West Glendive 17
- Camp Three 16
- Chester 16
- Klein 16
- Poplar 16
- Valier 16
- Bigfork 15
- Dillon 15
- Hays 15
- Joliet 15
- Kalispell 15
- Rapelje 15
- Antelope 14
- Bridger 14
- Frazer 14
- Huntley 14
- Vaughn 14
- Brockway 13
- Crane 13
- Culbertson 13
- Froid 13
- Malmstrom AFB 13
- Red Lodge 13
- Geraldine 12
- Geyser 12
- Lame Deer 12
- Monarch 12
- Ryegate 12
- Shawmut 12
- Sun River 12
- Winifred 12
- Absarokee 11
- Brady 11
- Denton 11
- Flaxville 11
- Golden Valley Colony 11
- Ismay 11
- Judith Gap 11
- Lavina 11
- Lindsay 11
- Medicine Lake 11
- Park City 11
- Turner 11
- Vida 11
- Basin 10
- Darby 10
- Fort Benton 10
- Fort Smith 10
- Hamilton 10
- Moore 10
- Muddy 10
- Outlook 10
- Pompeys Pillar 10
- Pryor 10
- Simms 10
- Wyola 10
Recent storm days in Montana
- Sep 13, 2026 8 US reports
- Sep 7, 2026 6 US reports
- Sep 6, 2026 49 US reports
- Sep 2, 2026 14 US reports
- Aug 26, 2026 29 US reports
- Aug 23, 2026 16 US reports
- Aug 14, 2026 20 US reports
How Montana compares
Hail reports by county
Questions about hail in Montana
How often does it hail in Montana?
8,453 hail reports have been logged in Montana since 1955. Over the 20 years 2006–2025 that averages 231.4 reports a year. That ranks #18 of 51 states by number of reports.
When is hail season in Montana?
Most reports come in July, June, August. July alone accounts for 38% of all reports.
What is the largest hail recorded in Montana?
6.00 in (softball size) on June 3, 1971. 8% of reports here were 2 inches or larger.
When did it last hail in Montana?
The most recent report in this data is from September 13, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Montana had in the last five years?
122 separate days with hail reports since November 3, 2021, adding up to 695 reports. The most recent was September 13, 2026.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.