Hail events in Lewis and Clark County, Montana The hail events on record, by date and by year
This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).
NCEI has 118 hail events on record for Lewis and Clark County, Montana, from 1955 through 30 Jun 2026.
The newest hail event on record is on 25 Jun 2026.
From 2016 through 2025, NCEI has 15 hail events on record for the county.
The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .
Date of the data: NCEI storm events through . Event types on this page: Hail.
Newest hail events on record
Hail1.00 in, quarter size
1 mile NW of EAST HELENA
Hail1.00 in, quarter size
2 miles WNW of (HLN)HELENA RGNL ARP
Hail1.00 in, quarter size
1 mile NW of IRON
Hail1.00 in, quarter size
3 miles WNW of MARYSVILLE
Hail1.50 in, ping-pong ball size
1 mile SSE of SILVER CITY
Hail0.75 in, penny size
4 miles SSW of AUSTIN
Hail1.00 in, quarter size
3 miles WNW of MARYSVILLE
Hail1.00 in, quarter size
17 miles WNW of AUGUSTA
Hail1.00 in, quarter size
19 miles WNW of AUGUSTA
Hail1.00 in, quarter size
24 miles W of AUGUSTA
Hail1.00 in, quarter size
7 miles ESE of MARYSVILLE
Hail1.00 in, quarter size
1 mile E of EAST HELENA
Hail1.00 in, quarter size
1 mile NNW of CANYON CREEK
Hail1.00 in, quarter size
1 mile SE of AUGUSTA
Hail1.00 in, quarter size
2 miles SE of LINCOLN ARPT
Hail1.00 in, quarter size
3 miles WNW of MARYSVILLE
Hail1.50 in, ping-pong ball size
10 miles WNW of HELENA
Hail1.25 in, half dollar size
13 miles S of MARYSVILLE
Hail1.25 in, half dollar size
3 miles SE of AUSTIN
Hail1.75 in, golf ball size
4 miles WNW of UNIONVILLE
Hail0.88 in, nickel size
8 miles NW of CANYON FERRY
Hail1.00 in, quarter size
2 miles S of IRON
Hail1.00 in, quarter size
1 mile SSE of SILVER CITY
Hail1.50 in, ping-pong ball size
3 miles W of LINCOLN
Hail1.25 in, half dollar size
2 miles SE of HELENA
A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. Hail size is in inches, with the object that NCEI names for that size.
Hail events by year
| Decade | Year that ends in 0 | Year that ends in 1 | Year that ends in 2 | Year that ends in 3 | Year that ends in 4 | Year that ends in 5 | Year that ends in 6 | Year that ends in 7 | Year that ends in 8 | Year that ends in 9 | All |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 3 |
| 1960s | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 0 | 0 | 3 |
| 1970s | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 4 |
| 1980s | 0 | 0 | 4 | 0 | 0 | 1 | 0 | 0 | 2 | 2 | 9 |
| 1990s | 1 | 3 | 0 | 0 | 0 | 0 | 3 | 6 | 3 | 1 | 17 |
| 2000s | 4 | 12 | 3 | 2 | 6 | 6 | 0 | 6 | 6 | 2 | 47 |
| 2010s | 2 | 2 | 2 | 6 | 5 | 0 | 1 | 3 | 2 | 1 | 24 |
| 2020s | 1 | 2 | 3 | 0 | 2 | 0 | 3 (part of the year) | 11 |
A darker cell has a larger count. The number is in each cell.
Hail events are on record from 1955. The year 2026 has the events through 30 Jun 2026 only.
By month, all years
- Jan0 events
- Feb0 events
- Mar0 events
- Apr0 events
- May12 events
- Jun42 events
- Jul38 events
- Aug23 events
- Sep3 events
- Oct0 events
- Nov0 events
- Dec0 events
Magnitudes on record
| Hail size | Size in words | Events |
|---|---|---|
| under 1 in | pea to quarter | 31 |
| 1 to 1.74 in | quarter to golf ball | 60 |
| 1.75 to 2.74 in | golf ball to baseball | 22 |
| 2.75 to 3.99 in | baseball to softball | 5 |
| 4 in and larger | softball and larger | 0 |
When listing hail size under Magnitude, e.g., 2.25 in., the hail size is given in inches and hundredths of inches. These values are assigned a size in inches from their appearance.
An event without a size in the record is not in this table.
Beside the other counties
| Measure | Lewis and Clark | All counties of Montana | All counties of the United States |
|---|---|---|---|
| Hail events, 1955 to 2026 | 118 | 8,372 | 423,723 |
| Events for each 100 square miles | 3.4 | 5.8 | 12.0 |
| Events for each 10,000 residents | 16.3 | 75.8 | 12.8 |
The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.
More hail events on record
| Date | Event type | Magnitude | Damage estimate | Deaths | Injuries | On record for |
|---|---|---|---|---|---|---|
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.50 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.88 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.50 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.88 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.50 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.88 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.50 in | none | 0 | 0 | County | |
| Hail | 0.88 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 0.88 in | none | 0 | 0 | County | |
| Hail | 2.00 in | $2 thousand | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.25 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.25 in | none | 0 | 0 | County | |
| Hail | 3.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 2.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.25 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.50 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 3.00 in | none | 0 | 0 | County | |
| Hail | 3.00 in | none | 0 | 0 | County | |
| Hail | 2.50 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 3.00 in | none | 0 | 0 | County | |
| Hail | 2.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 2.50 in | none | 0 | 0 | County | |
| Hail | 1.75 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 1.00 in | none | 0 | 0 | County | |
| Hail | 0.75 in | none | 0 | 0 | County |
The table has all other events on record. A damage figure is an estimate in the NCEI record.
Official channels
- NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
- National Weather Service: Great Falls, MT (opens in a new tab)The forecast office that issues the weather warnings for the county.
- FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.
These links open the pages of the agencies. The site checked the links on .
Cite this page
County Hazards. "Hail events on record for Lewis and Clark County, Montana". https://countyhazards.com/county/mt/lewis-and-clark/hail/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on .
Questions
- Which month has the most hail events on record for Lewis and Clark County?
- June has 42 of the 118 hail events on record from 1955 through 30 Jun 2026.
- How many hail events are on record for Montana?
- NCEI has 8,391 hail events on record for Montana from 1955 through 30 Jun 2026. That count has every forecast zone of the state.
- How does Lewis and Clark County compare with the other counties of Montana?
- The counties of Montana have 5.8 hail events for each 100 square miles. Lewis and Clark County has 3.4.
- How large is the hail on record for Lewis and Clark County?
- 27 hail events have a size of 1.75 inches or more. NCEI names 1.75 inches a golf ball.