115
Recorded events
0
Direct deaths
0
Direct injuries
$2K
Property damage
Hail in Lewis and Clark County, Montana: 115 recorded events between 1955 and 2024. The strongest on record measured 3. That places the county #1,251 nationally and #29 statewide for this hazard.
Decade by decade
Hail in Lewis and Clark County, Montana: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for hail in Lewis and Clark County is the 2000s, when 47 of the county's 115 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Lewis and Clark County archive, hail makes up 36.6% of all recorded severe weather across 11 hazard types. Nationally the county sits at #1,251 for this hazard and #29 within Montana, putting it in the 59.6 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for hail in Lewis and Clark County with 39 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Aug 7, 2024 | MARYSVILLE | 1 | $0 |
| Aug 6, 2024 | SILVER CITY | 1.5 | $0 |
| Jul 9, 2022 | AUSTIN | 0.75 | $0 |
| Jul 9, 2022 | MARYSVILLE | 1 | $0 |
| Jul 8, 2022 | AUGUSTA | 1 | $0 |
| Jul 22, 2021 | AUGUSTA | 1 | $0 |
| Jul 22, 2021 | AUGUSTA | 1 | $0 |
| May 19, 2020 | MARYSVILLE | 1 | $0 |
| Aug 11, 2019 | EAST HELENA | 1 | $0 |
| May 31, 2018 | CANYON CREEK | 1 | $0 |
Other hazards here
More from Lewis and Clark County
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A severe thunderstorm moved through the Helena area on the 14th. Hail generally ranged from 1 inch to 1.75 inches in diameter. Wind gusts between 60 and 70 mph were common throughout the Helena area. Numerous trees and power lines were knocked down.
Quick answers
Frequently asked
How many hail events are on record in Lewis and Clark County, Montana?
115 hail events are recorded in Lewis and Clark County between 1955 and 2024, causing 0 direct deaths.
What is the strongest hail recorded in Lewis and Clark County?
The strongest hail on record in Lewis and Clark County measured 3.
Where does the hail data for Lewis and Clark County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Hail in Lewis and Clark County, Montana.” Severe Weather History. severeweatherhistory.com/county/montana/lewis-and-clark-county/hail/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.