Hail History

Hail history for Sun River, Montana

NOAA hail reports in and within about 5 km (3 miles) of Sun River since 1991, with preliminary reports to November 3, 2026.

Readout · Sun River

Last hail
Jun 15, 2025
1.00 in, quarter size
Hail days, last 5 years
3
since Nov 3, 2021 · 9 reports
Largest ever
3.00 in
teacup · Jul 7, 2022

12 reports on 6 days since 1991 · #85 of 111 Montana places

Hail map · Sun River

Sun River Vaughn Simms Great Falls Malmstrom AFB 20 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
12 most recent reports with a location; Cascade County is shaded. Open street map

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What the record says about Sun River

The latest hail report in and around Sun River is from June 15, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 3.00 in on July 7, 2022.

Over the 20 years 2006–2025, Sun River logged 10 reports on 4 hail days, about 0.5 reports a year. That is 11% more than the median Montana town on this site (0.5 a year) and ranks #85 of 111 Montana cities and towns on this site for all-time reports. Sun River accounts for 5% of the 256 reports filed in Cascade County.

33% 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 July 7, 2022 near 2.92 NNW Sun River.

Reports were up 800% in 2016–2025 (9) compared with 2006–2015 (1). The busiest year was 2022, with 7 reports on 2 days. Hail here peaks in July (50% of reports); 42% fall between April and June.

Reports a year 2006–2025 average

  • Sun River 0.5
  • Cascade County 6.7
  • Median Montana town on this site 0.5

Hail days 2006–2025

  • Sun River 4
  • Cascade County 51
  • Median Montana town on this site 7

Share 2 in or larger of sized reports

  • Sun River 33%
  • Cascade County 7%
  • Median Montana town on this site 8%

Hail over time

02468 1991: 1 reports, largest 1.00 in 1995 2000 2002: 1 reports, largest 1.75 in 2005 2010 2014: 1 reports, largest 0.75 in 2015 2020 2022: 7 reports, largest 3.00 in 2025: 2 reports, largest 1.00 in 2025
Reports per year, 1991–2026. 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 (8%) May June: 4 reports (33%) Jun July: 6 reports (50%) Jul August: 1 reports (8%) Aug Sep Oct Nov Dec
All 12 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 2 2
2024 0
2023 0
2022 16 7
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jun 15, 2025 2 1.00 in —
Jul 7, 2022 6 3.00 in —
Jun 18, 2022 1 1.00 in —

Largest hail on record

Largest hail reports in Sun River
Date Size Location County Time · source
Jul 7, 2022 3.00 inteacup 2.92 NNW Sun River Cascade 15:32 local · NCEI
Jul 7, 2022 2.00 inhen egg 2.71 ENE Ashuelot Cascade 16:26 local · NCEI
Jul 7, 2022 2.00 inhen egg 2.71 ENE Ashuelot Cascade 16:19 local · NCEI
Jul 7, 2022 2.00 inhen egg 2.71 ENE Ashuelot Cascade 15:42 local · NCEI
Aug 5, 2002 1.75 ingolf ball Sun River Cascade 18:20 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Sun River
Date Size Location County Time · source
Jun 15, 2025 1.00 inquarter 2.71 ENE Ashuelot Cascade 14:25 local · NCEI
Jun 15, 2025 1.00 inquarter 2.71 ENE Ashuelot Cascade 14:24 local · NCEI
Jul 7, 2022 2.00 inhen egg 2.71 ENE Ashuelot Cascade 16:26 local · NCEI
Jul 7, 2022 2.00 inhen egg 2.71 ENE Ashuelot Cascade 16:19 local · NCEI
Jul 7, 2022 2.00 inhen egg 2.71 ENE Ashuelot Cascade 15:42 local · NCEI
Jul 7, 2022 1.50 inping pong ball 1.99 ENE Ashuelot Cascade 15:38 local · NCEI
Jul 7, 2022 3.00 inteacup 2.92 NNW Sun River Cascade 15:32 local · NCEI
Jul 7, 2022 1.00 inquarter 2.43 ENE Ashuelot Cascade 15:25 local · NCEI
Jun 18, 2022 1.00 inquarter 0.47 E Sun River Cascade 13:05 local · NCEI
May 4, 2014 0.75 inpenny 0.47 E Sun River Cascade 13:55 local · NCEI
Aug 5, 2002 1.75 ingolf ball Sun River Cascade 18:20 local · NCEI
Jun 25, 1991 1.00 inquarter — Cascade 15:20 local · NCEI

Hail history near Sun River

Questions about hail in Sun River

How often does it hail in Sun River, Montana?

12 hail reports have been logged in and within about 5 km (3 miles) of Sun River since 1991. Over the 20 years 2006–2025 that averages 0.5 reports a year. That ranks #85 of 111 Montana places by number of reports.

When is hail season in Sun River?

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

What is the largest hail recorded in Sun River?

3.00 in (teacup size) on July 7, 2022 near 2.92 NNW Sun River. 33% of reports here were 2 inches or larger.

When did it last hail in Sun River?

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 Sun River had in the last five years?

3 separate days with hail reports since November 3, 2021, adding up to 9 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.