Hail history for Powell County, Montana
Every NOAA hail report filed in Powell County since 1982, with preliminary National Weather Service reports to November 3, 2026.
Readout · Powell County
- Last hail
- Sep 6, 2026
- 0.88 in, nickel size · preliminary
- Hail days, last 5 years
- 5
- since Nov 3, 2021 · 6 reports
- Largest ever
- 2.00 in
- hen egg · Jun 29, 1982
67 reports on 49 days since 1982 · #41 of 57 Montana counties
Hail map · Powell County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Powell County
The latest hail report in Powell County is from September 6, 2026, 0.88 in (nickel size). Since November 3, 2021 there have been 5 separate hail days; the biggest stones in that time were 1.75 in on September 6, 2026.
Over the 20 years 2006–2025, Powell County logged 28 reports on 22 hail days, about 1.4 reports a year. That is about half the median Montana county (3.0 a year) and ranks #41 of 57 Montana counties for all-time reports. Powell County holds 1% of all 8,453 hail reports in Montana.
2% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Montana county. The largest hail on record here is 2.00 in (hen egg) on June 29, 1982.
Reports were down 35% in 2016–2025 (11) compared with 2006–2015 (17). The busiest year was 2002, with 8 reports on 4 days. Hail here peaks in July (49% of reports); 27% fall between April and June.
Reports a year 2006–2025 average
- Powell County 1.4
- Median Montana county 3.0
Hail days 2006–2025
- Powell County 22
- Median Montana county 31
Share 2 in or larger of sized reports
- Powell County 2%
- Median Montana county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2 | 2 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 3 | 3 | |||||||||||
| 2021 | 1 | 1 | |||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 2 | 2 | |||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 2 | 2 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 6, 2026 | 2 | 1.75 in | View |
| May 22, 2023 | 1 | 1.00 in | — |
| Jul 9, 2022 | 1 | 0.88 in | — |
| Jul 8, 2022 | 1 | 1.20 in | — |
| Jul 7, 2022 | 1 | 0.88 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Jun 29, 1982 | 2.00 inhen egg | — | — | 18:30 local · NCEI |
| Sep 6, 2026 | 1.75 ingolf ball | Avon | — | 23:20 UTC · NWS prelim. |
| Jul 4, 2008 | 1.75 ingolf ball | 1 E Jens | — | 18:55 local · NCEI |
| May 10, 2007 | 1.75 ingolf ball | 0.95 W Avon | $2K | 14:50 local · NCEI |
| Jul 3, 1988 | 1.75 ingolf ball | — | — | 20:30 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 31 47%
- 1–2 in 34 52%
- 2 in + 1 2%
- No size 1
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Sep 6, 2026 | 0.88 innickel | Deer Lodge | 23:30 UTC · NWS prelim. |
| Sep 6, 2026 | 1.75 ingolf ball | Avon | 23:20 UTC · NWS prelim. |
| May 22, 2023 | 1.00 inquarter | 2.31 W Helmville | 11:04 local · NCEI |
| Jul 9, 2022 | 0.88 innickel | 0.25 NNE Helmville | 15:32 local · NCEI |
| Jul 8, 2022 | 1.20 inquarter | 5.14 N Helmville | 18:35 local · NCEI |
| Jul 7, 2022 | 0.88 innickel | 3.44 WSW Elliston | 16:48 local · NCEI |
| Jul 21, 2021 | 1.00 inquarter | 15.35 NW Ovando | 17:07 local · NCEI |
| Jul 14, 2019 | 1.50 inping pong ball | 3.38 SE Helmville | 15:00 local · NCEI |
| Jul 13, 2019 | 1.25 inhalf dollar | Ovando | 21:30 local · NCEI |
| Jul 27, 2018 | 1.50 inping pong ball | 0.84 SW Deer Lodge Arpt | 16:45 local · NCEI |
| May 6, 2017 | 1.00 inquarter | Garrison | 14:57 local · NCEI |
| May 6, 2017 | 1.00 inquarter | 3.52 NW Kohr | 14:35 local · NCEI |
Cities and towns in Powell County
| Place | Reports | Largest |
|---|---|---|
| Deer Lodge | 24 | 1.75 in |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Avon | 6 | 5 | Sep 6, 2026 |
| Helmville | 5 | 5 | May 22, 2023 |
| Ovando | 5 | 5 | Jul 13, 2019 |
| Elliston | 4 | 3 | Jul 7, 2022 |
| Garrison | 4 | 4 | May 6, 2017 |
| Racetrack | 1 | 1 | Aug 1, 2013 |
Questions about hail in Powell County
How often does it hail in Powell County, Montana?
67 hail reports have been logged in Powell County since 1982. Over the 20 years 2006–2025 that averages 1.4 reports a year. That ranks #41 of 57 Montana counties by number of reports.
When is hail season in Powell County?
Most reports come in July, June, August. July alone accounts for 49% of all reports.
What is the largest hail recorded in Powell County?
2.00 in (hen egg size) on June 29, 1982. 1% of reports here were 2 inches or larger.
When did it last hail in Powell County?
The most recent report in this data is from September 6, 2026 (0.88 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Powell County had in the last five years?
5 separate days with hail reports since November 3, 2021, adding up to 6 reports. The most recent was September 6, 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.