Hail history for Gregory County, South Dakota
Every NOAA hail report filed in Gregory County since 1957, with preliminary National Weather Service reports to November 3, 2026.
Readout · Gregory County
- Last hail
- Sep 1, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 13
- since Nov 3, 2021 · 24 reports
- Largest ever
- 3.00 in
- teacup · Jul 12, 1965
251 reports on 131 days since 1957 · #23 of 67 South Dakota counties
Hail map · Gregory County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Gregory County
The latest hail report in Gregory County is from September 1, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 13 separate hail days; the biggest stones in that time were 2.75 in on August 25, 2024.
Over the 20 years 2006–2025, Gregory County logged 136 reports on 67 hail days, about 6.8 reports a year. That is 24% more than the median South Dakota county (5.5 a year) and ranks #23 of 67 South Dakota counties for all-time reports. Gregory County holds 1% of all 17,223 hail reports in South Dakota.
8% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median South Dakota county. The largest hail on record here is 3.00 in (teacup) on July 12, 1965.
Reports were down 26% in 2016–2025 (58) compared with 2006–2015 (78). The busiest year was 2008, with 28 reports on 12 days. Hail here peaks in June (39% of reports); 55% fall between April and June.
Reports a year 2006–2025 average
- Gregory County 6.8
- Median South Dakota county 5.5
Hail days 2006–2025
- Gregory County 67
- Median South Dakota county 54
Share 2 in or larger of sized reports
- Gregory County 8%
- Median South Dakota county 8%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | 3 | 5 | |||||||||
| 2025 | 3 | 2 | 1 | 6 | |||||||||
| 2024 | 3 | 7 | 10 | ||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 3 | 3 | |||||||||||
| 2021 | 3 | 2 | 5 | ||||||||||
| 2020 | 7 | 4 | 11 | ||||||||||
| 2019 | 5 | 2 | 5 | 12 | |||||||||
| 2018 | 2 | 2 | |||||||||||
| 2017 | 2 | 1 | 1 | 4 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 1, 2026 | 3 | 1.00 in | View |
| Jul 7, 2026 | 1 | 1.00 in | — |
| May 17, 2026 | 1 | 1.25 in | — |
| Aug 3, 2025 | 1 | 1.00 in | — |
| Jul 28, 2025 | 1 | 1.75 in | — |
| Jul 15, 2025 | 1 | 1.25 in | — |
| Jun 28, 2025 | 2 | 1.00 in | — |
| Jun 19, 2025 | 1 | 1.00 in | — |
| Aug 25, 2024 | 5 | 2.75 in | — |
| Aug 18, 2024 | 2 | 1.00 in | — |
| Jul 31, 2024 | 2 | 2.00 in | — |
| Jul 28, 2024 | 1 | 2.75 in | — |
| Jun 25, 2022 | 3 | 2.00 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Jul 12, 1965 | 3.00 inteacup | — | — | 17:00 local · NCEI |
| Aug 25, 2024 | 2.75 inbaseball | 3.49 S Gregory Arpt | — | 17:48 local · NCEI |
| Jul 28, 2024 | 2.75 inbaseball | 8.58 E Lucas | — | 20:30 local · NCEI |
| Jun 20, 2020 | 2.75 inbaseball | 7.67 N Lucas | — | 18:30 local · NCEI |
| Aug 6, 2019 | 2.75 inbaseball | 7.19 NNE Dixon | $5K | 21:10 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 94 37%
- 1–2 in 136 54%
- 2 in + 21 8%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Sep 1, 2026 | 1.00 inquarter | 4 SSW Pickstown | 22:05 UTC · NWS prelim. |
| Sep 1, 2026 | 1.00 inquarter | Fairfax | 21:40 UTC · NWS prelim. |
| Sep 1, 2026 | 0.88 innickel | 1 SSW Fairfax | 21:39 UTC · NWS prelim. |
| Jul 7, 2026 | 1.00 inquarter | 2.01 W Lucas | 03:30 local · NCEI |
| May 17, 2026 | 1.25 inhalf dollar | 0.5 E Burke | 12:40 local · NCEI |
| Aug 3, 2025 | 1.00 inquarter | 0.69 N Gregory | 17:00 local · NCEI |
| Jul 28, 2025 | 1.75 ingolf ball | 0.5 E Burke | 17:15 local · NCEI |
| Jul 15, 2025 | 1.25 inhalf dollar | 4.18 S Gregory Arpt | 16:01 local · NCEI |
| Jun 28, 2025 | 1.00 inquarter | 2.44 NE Herrick | 22:06 local · NCEI |
| Jun 28, 2025 | 0.88 innickel | 2.13 WNW Herrick | 21:53 local · NCEI |
| Jun 19, 2025 | 1.00 inquarter | 2.13 WNW Herrick | 17:40 local · NCEI |
| Aug 25, 2024 | 1.00 inquarter | 3.6 NNE Lucas | 18:13 local · NCEI |
Cities and towns in Gregory County
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| St. Charles | 7 | 7 | May 25, 2016 |
Questions about hail in Gregory County
How often does it hail in Gregory County, South Dakota?
251 hail reports have been logged in Gregory County since 1957. Over the 20 years 2006–2025 that averages 6.8 reports a year. That ranks #23 of 67 South Dakota counties by number of reports.
When is hail season in Gregory County?
Most reports come in June, August, July. June alone accounts for 39% of all reports.
What is the largest hail recorded in Gregory County?
3.00 in (teacup size) on July 12, 1965. 8% of reports here were 2 inches or larger.
When did it last hail in Gregory County?
The most recent report in this data is from September 1, 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 Gregory County had in the last five years?
13 separate days with hail reports since November 3, 2021, adding up to 24 reports. The most recent was September 1, 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.