Hail history for Helena, Montana
NOAA hail reports in and within about 5 km (3 miles) of Helena since 1959, with preliminary reports to November 3, 2026.
Readout · Helena
- Last hail
- Jun 25, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 3.00 in
- teacup · Jun 28, 1982
27 reports on 22 days since 1959 · #28 of 111 Montana places
Hail map · Helena
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Concerned about your roof after hail?
Send a request to Moxisync Labs for review. The latest hail report in Helena is from June 25, 2026. We’re building local roofer coverage. Submitting a request does not guarantee a quote or book an inspection.
Phone line opening soon
What the record says about Helena
The latest hail report in and around Helena is from June 25, 2026, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on June 25, 2026.
Over the 20 years 2006–2025, Helena logged 1 report on 1 hail day, about 0.1 reports a year. That is 11% of the median Montana town on this site (0.5 a year) and ranks #28 of 111 Montana cities and towns on this site for all-time reports. Helena accounts for 22% of the 121 reports filed in Lewis and Clark County.
15% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Montana town on this site. The largest hail on record here is 3.00 in (teacup) on June 28, 1982.
The busiest year was 2001, with 7 reports on 4 days. Hail here peaks in June (37% of reports); 44% fall between April and June.
Reports a year 2006–2025 average
- Helena 0.1
- Lewis and Clark County 2.3
- Median Montana town on this site 0.5
Hail days 2006–2025
- Helena 1
- Lewis and Clark County 28
- Median Montana town on this site 7
Share 2 in or larger of sized reports
- Helena 15%
- Lewis and Clark County 7%
- Median Montana town on this site 8%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 25, 2026 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jun 28, 1982 | 3.00 inteacup | — | Lewis And Clark | 18:30 local · NCEI |
| Jul 1, 1975 | 3.00 inteacup | — | Lewis And Clark | 17:30 local · NCEI |
| Jun 30, 1975 | 2.75 inbaseball | — | Lewis And Clark | 19:42 local · NCEI |
| Jun 28, 1982 | 2.50 intennis ball | — | Lewis And Clark | 18:52 local · NCEI |
| Jun 27, 2005 | 1.75 ingolf ball | Helena | Lewis And Clark | 14:25 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 6 22%
- 1–2 in 17 63%
- 2 in + 4 15%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jun 25, 2026 | 1.00 inquarter | 2.02 WNW (Hln)helena Rgnl Arp | Lewis And Clark | 13:18 local · NCEI |
| Jun 16, 2007 | 1.00 inquarter | Helena | Lewis And Clark | 15:50 local · NCEI |
| Jun 27, 2005 | 1.75 ingolf ball | Helena | Lewis And Clark | 14:25 local · NCEI |
| Aug 3, 2004 | 1.00 inquarter | Helena | Lewis And Clark | 13:55 local · NCEI |
| Aug 22, 2003 | 0.75 inpenny | Helena | Lewis And Clark | 16:21 local · NCEI |
| Jul 14, 2002 | 1.75 ingolf ball | Helena | Lewis And Clark | 16:40 local · NCEI |
| Aug 4, 2001 | 1.00 inquarter | Helena | Lewis And Clark | 14:22 local · NCEI |
| Aug 4, 2001 | 0.88 innickel | Helena | Lewis And Clark | 12:50 local · NCEI |
| Aug 4, 2001 | 1.00 inquarter | Helena | Lewis And Clark | 12:31 local · NCEI |
| Aug 4, 2001 | 1.50 inping pong ball | Helena | Lewis And Clark | 12:20 local · NCEI |
| Jul 16, 2001 | 0.75 inpenny | Helena | Lewis And Clark | 14:05 local · NCEI |
| Jul 12, 2001 | 0.75 inpenny | Helena | Lewis And Clark | 15:35 local · NCEI |
Hail history near Helena
- Basin 40 km · 10
- Deer Lodge 59 km · 24
Questions about hail in Helena
How often does it hail in Helena, Montana?
27 hail reports have been logged in and within about 5 km (3 miles) of Helena since 1959. Over the 20 years 2006–2025 that averages 0.1 reports a year. That ranks #28 of 111 Montana places by number of reports.
When is hail season in Helena?
Most reports come in June, August, July. June alone accounts for 37% of all reports.
What is the largest hail recorded in Helena?
3.00 in (teacup size) on June 28, 1982. 15% of reports here were 2 inches or larger.
When did it last hail in Helena?
The most recent report in this data is from June 25, 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 Helena had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was June 25, 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.