Hail history for Garrison, North Dakota
NOAA hail reports in and within about 5 km (3 miles) of Garrison since 1983, with preliminary reports to November 3, 2026.
Readout · Garrison
- Last hail
- Sep 6, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 2
- since Nov 3, 2021 · 2 reports
- Largest ever
- 4.00 in
- grapefruit · Aug 24, 1983
23 reports on 19 days since 1983 · #52 of 208 North Dakota places
Hail map · Garrison
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Garrison is from September 6, 2026. A local roofer can check and document it at no cost.
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What the record says about Garrison
The latest hail report in and around Garrison is from September 6, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.50 in on May 12, 2022.
Over the 20 years 2006–2025, Garrison logged 15 reports on 11 hail days, about 0.8 reports a year. That is 88% more than the median North Dakota town on this site (0.4 a year) and ranks #52 of 208 North Dakota cities and towns on this site for all-time reports. Garrison accounts for 8% of the 285 reports filed in McLean County.
4% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median North Dakota town on this site. The largest hail on record here is 4.00 in (grapefruit) on August 24, 1983.
Reports were down 75% in 2016–2025 (3) compared with 2006–2015 (12). The busiest year was 2008, with 5 reports on 2 days. Hail here peaks in July (48% of reports); 35% fall between April and June.
Reports a year 2006–2025 average
- Garrison 0.8
- McLean County 7.8
- Median North Dakota town on this site 0.4
Hail days 2006–2025
- Garrison 11
- McLean County 74
- Median North Dakota town on this site 7
Share 2 in or larger of sized reports
- Garrison 4%
- McLean County 7%
- Median North Dakota 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 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 6, 2026 | 1 | 1.00 in | View |
| May 12, 2022 | 1 | 1.50 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Aug 24, 1983 | 4.00 ingrapefruit | — | Mclean | — | 14:10 local · NCEI |
| Jun 21, 2016 | 1.75 ingolf ball | 1.46 NNE Garrison Muni Arpt | Mclean | — | 22:00 local · NCEI |
| Jul 23, 2015 | 1.75 ingolf ball | 1.96 NE Garrison Muni Arpt | Mclean | $150K | 17:02 local · NCEI |
| Jul 26, 2010 | 1.75 ingolf ball | Garrison | Mclean | — | 20:00 local · NCEI |
| Jun 18, 2008 | 1.75 ingolf ball | 1 S Garrison | Mclean | — | 13:23 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 4 17%
- 1–2 in 18 78%
- 2 in + 1 4%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Sep 6, 2026 | 1.00 inquarter | 4 S Garrison | McLean | — | 16:34 UTC · NWS prelim. |
| May 12, 2022 | 1.50 inping pong ball | Garrison | Mclean | — | 16:54 local · NCEI |
| Jun 6, 2020 | 1.00 inquarter | 2.79 SW Garrison Muni Arpt | Mclean | — | 08:13 local · NCEI |
| Jun 21, 2016 | 1.75 ingolf ball | 1.46 NNE Garrison Muni Arpt | Mclean | — | 22:00 local · NCEI |
| Jul 23, 2015 | 1.75 ingolf ball | 1.96 NE Garrison Muni Arpt | Mclean | $150K | 17:02 local · NCEI |
| Sep 3, 2014 | 1.50 inping pong ball | 126.25 NNE Haynes | Mclean | — | 22:18 local · NCEI |
| Jun 7, 2012 | 1.25 inhalf dollar | Garrison | Mclean | — | 14:32 local · NCEI |
| Jul 15, 2011 | 0.88 innickel | Garrison | Mclean | — | 01:43 local · NCEI |
| Jul 26, 2010 | 1.75 ingolf ball | Garrison | Mclean | — | 20:00 local · NCEI |
| Jul 26, 2010 | 1.00 inquarter | Garrison | Mclean | — | 18:59 local · NCEI |
| Jun 25, 2010 | 1.00 inquarter | 2.79 SW Garrison Muni Arpt | Mclean | — | 00:59 local · NCEI |
| Jul 30, 2008 | 1.00 inquarter | Garrison | Mclean | — | 21:39 local · NCEI |
Hail history near Garrison
Questions about hail in Garrison
How often does it hail in Garrison, North Dakota?
23 hail reports have been logged in and within about 5 km (3 miles) of Garrison since 1983. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #52 of 208 North Dakota places by number of reports.
When is hail season in Garrison?
Most reports come in July, June, September. July alone accounts for 48% of all reports.
What is the largest hail recorded in Garrison?
4.00 in (grapefruit size) on August 24, 1983. 4% of reports here were 2 inches or larger.
When did it last hail in Garrison?
The most recent report in this data is from September 6, 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 Garrison had in the last five years?
2 separate days with hail reports since November 3, 2021, adding up to 2 reports. The most recent was September 6, 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.