Hail History

Hail history for Fort Benton, Montana

NOAA hail reports in and within about 5 km (3 miles) of Fort Benton since 1958, with preliminary reports to November 3, 2026.

Readout · Fort Benton

Last hail
Jun 15, 2025
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
1.75 in
golf ball · Jun 20, 1974

10 reports on 9 days since 1958 · #102 of 111 Montana places

Hail map · Fort Benton

Fort Benton Geraldine Malmstrom AFB Great Falls 25 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
10 most recent reports with a location; Chouteau County is shaded. Open street map

For homeowners

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What the record says about Fort Benton

The latest hail report in and around Fort Benton is from June 15, 2025, 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 15, 2025.

Over the 20 years 2006–2025, Fort Benton logged 4 reports on 4 hail days, about 0.2 reports a year. That is about half the median Montana town on this site (0.5 a year) and ranks #102 of 111 Montana cities and towns on this site for all-time reports. Fort Benton accounts for 7% of the 153 reports filed in Chouteau County.

0% 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 1.75 in (golf ball) on June 20, 1974.

The busiest year was 1958, with 2 reports on 1 day. Hail here peaks in June (50% of reports); 60% fall between April and June.

Reports a year 2006–2025 average

  • Fort Benton 0.2
  • Chouteau County 3.6
  • Median Montana town on this site 0.5

Hail days 2006–2025

  • Fort Benton 4
  • Chouteau County 38
  • Median Montana town on this site 7

Share 2 in or larger of sized reports

  • Fort Benton 0%
  • Chouteau County 10%
  • Median Montana town on this site 8%

Hail over time

012 1958: 2 reports, largest 0.75 in 1960 1970 1973: 1 reports, largest 0.75 in 1974: 1 reports, largest 1.75 in 1976: 1 reports, largest 1.00 in 1980 1990 2000 2002: 1 reports, largest 0.75 in 2010 2011: 1 reports, largest 1.00 in 2013: 1 reports, largest 1.00 in 2014: 1 reports, largest 1.00 in 2020 2025: 1 reports, largest 1.00 in
Reports per year, 1958–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar Apr May: 1 reports (10%) May June: 5 reports (50%) Jun July: 2 reports (20%) Jul August: 2 reports (20%) Aug Sep Oct Nov Dec
All 10 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 1 1
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jun 15, 2025 1 1.00 in —

Largest hail on record

Largest hail reports in Fort Benton
Date Size Location County Time · source
Jun 20, 1974 1.75 ingolf ball — Chouteau 18:30 local · NCEI
Jun 15, 2025 1.00 inquarter 0.46 W Ft Benton Arpt Chouteau 15:01 local · NCEI
May 28, 2014 1.00 inquarter 0.46 W Ft Benton Arpt Chouteau 16:58 local · NCEI
Jul 8, 2013 1.00 inquarter Ft Benton Chouteau 19:25 local · NCEI
Jul 16, 2011 1.00 inquarter 1 N Ft Benton Chouteau 19:50 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

Most recent reports

Most recent hail reports in Fort Benton
Date Size Location County Time · source
Jun 15, 2025 1.00 inquarter 0.46 W Ft Benton Arpt Chouteau 15:01 local · NCEI
May 28, 2014 1.00 inquarter 0.46 W Ft Benton Arpt Chouteau 16:58 local · NCEI
Jul 8, 2013 1.00 inquarter Ft Benton Chouteau 19:25 local · NCEI
Jul 16, 2011 1.00 inquarter 1 N Ft Benton Chouteau 19:50 local · NCEI
Aug 5, 2002 0.75 inpenny Ft Benton Chouteau 19:30 local · NCEI
Jun 3, 1976 1.00 inquarter — Chouteau 16:30 local · NCEI
Jun 20, 1974 1.75 ingolf ball — Chouteau 18:30 local · NCEI
Aug 4, 1973 0.75 inpenny — Chouteau 19:00 local · NCEI
Jun 27, 1958 0.75 inpenny — Chouteau 17:30 local · NCEI
Jun 27, 1958 0.75 inpenny — Chouteau 17:30 local · NCEI

Hail history near Fort Benton

Questions about hail in Fort Benton

How often does it hail in Fort Benton, Montana?

10 hail reports have been logged in and within about 5 km (3 miles) of Fort Benton since 1958. Over the 20 years 2006–2025 that averages 0.2 reports a year. That ranks #102 of 111 Montana places by number of reports.

When is hail season in Fort Benton?

Most reports come in June, July, August. June alone accounts for 50% of all reports.

What is the largest hail recorded in Fort Benton?

1.75 in (golf ball size) on June 20, 1974. 0% of reports here were 2 inches or larger.

When did it last hail in Fort Benton?

The most recent report in this data is from June 15, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Fort Benton 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 15, 2025.

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.