Hail history for Mellette County, South Dakota
Every NOAA hail report filed in Mellette County since 1971, with preliminary National Weather Service reports to November 3, 2026.
Readout · Mellette County
- Last hail
- Jun 29, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 11
- since Nov 3, 2021 · 16 reports
- Largest ever
- 4.50 in
- softball · Aug 26, 2020
164 reports on 107 days since 1971 · #47 of 67 South Dakota counties
Hail map · Mellette 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 Mellette County
The latest hail report in Mellette County is from June 29, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 11 separate hail days; the biggest stones in that time were 1.75 in on July 1, 2025.
Over the 20 years 2006–2025, Mellette County logged 90 reports on 55 hail days, about 4.5 reports a year. That is 18% less than the median South Dakota county (5.5 a year) and ranks #47 of 67 South Dakota counties for all-time reports. Mellette 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 4.50 in (softball) on August 26, 2020 near 6 E Norris.
Reports held about level in 2016–2025 (44) compared with 2006–2015 (46). The busiest year was 2019, with 10 reports on 5 days. Hail here peaks in August (31% of reports); 41% fall between April and June.
Reports a year 2006–2025 average
- Mellette County 4.5
- Median South Dakota county 5.5
Hail days 2006–2025
- Mellette County 55
- Median South Dakota county 54
Share 2 in or larger of sized reports
- Mellette 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 | 2 | 2 | |||||||||||
| 2025 | 2 | 2 | |||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 1 | 1 | 2 | 2 | 6 | ||||||||
| 2022 | 4 | 4 | |||||||||||
| 2021 | 3 | 2 | 5 | ||||||||||
| 2020 | 3 | 1 | 5 | 9 | |||||||||
| 2019 | 2 | 7 | 1 | 10 | |||||||||
| 2018 | 1 | 1 | 1 | 3 | |||||||||
| 2017 | 2 | 2 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 29, 2026 | 1 | 1.00 in | — |
| Jun 2, 2026 | 1 | 1.50 in | — |
| Jul 20, 2025 | 1 | 0.75 in | — |
| Jul 1, 2025 | 1 | 1.75 in | — |
| Jul 29, 2024 | 2 | 1.50 in | — |
| Sep 20, 2023 | 2 | 1.25 in | — |
| Jul 27, 2023 | 1 | 1.00 in | — |
| Jul 19, 2023 | 1 | 1.00 in | — |
| Jun 27, 2023 | 1 | 1.25 in | — |
| May 30, 2023 | 1 | 0.75 in | — |
| Jun 24, 2022 | 4 | 1.50 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Aug 26, 2020 | 4.50 insoftball | 6 E Norris | — | 19:00 local · NCEI |
| Jun 1, 1997 | 3.00 inteacup | 15 N Cedar Butte | — | 19:00 local · NCEI |
| Aug 17, 2011 | 2.75 inbaseball | 15 N Cedar Butte | $40K | 17:55 local · NCEI |
| Jul 13, 2009 | 2.75 inbaseball | Cedar Butte | $40K | 16:53 local · NCEI |
| May 4, 2003 | 2.75 inbaseball | 2 N Mosher | — | 14:40 local · NCEI |
Size of every report
- Under 1 in 52 32%
- 1–2 in 99 60%
- 2 in + 13 8%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 29, 2026 | 1.00 inquarter | 3.6 SSE White River | 03:26 local · NCEI |
| Jun 2, 2026 | 1.50 inping pong ball | 0.5 E White River | 17:43 local · NCEI |
| Jul 20, 2025 | 0.75 inpenny | 6.61 NW Cedar Butte | 16:54 local · NCEI |
| Jul 1, 2025 | 1.75 ingolf ball | 11.38 NNW White River | 18:31 local · NCEI |
| Jul 29, 2024 | 1.00 inquarter | 10.67 NNE White River | 17:25 local · NCEI |
| Jul 29, 2024 | 1.50 inping pong ball | 9 N White River | 17:15 local · NCEI |
| Sep 20, 2023 | 1.25 inhalf dollar | 9 N Cedar Butte | 18:49 local · NCEI |
| Sep 20, 2023 | 0.88 innickel | 9 N Cedar Butte | 18:45 local · NCEI |
| Jul 27, 2023 | 1.00 inquarter | 1 SW Wood | 20:00 local · NCEI |
| Jul 19, 2023 | 1.00 inquarter | 5 ESE Norris | 02:19 local · NCEI |
| Jun 27, 2023 | 1.25 inhalf dollar | 5 ESE Norris | 19:39 local · NCEI |
| May 30, 2023 | 0.75 inpenny | 7.68 NW Norris | 21:23 local · NCEI |
Cities and towns in Mellette County
| Place | Reports | Largest |
|---|---|---|
| White River | 29 | 1.75 in |
| Wood | 17 | 2.75 in |
| Norris | 15 | 2.75 in |
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 |
|---|---|---|---|
| Horse Creek | 8 | 8 | Jun 29, 2026 |
| Corn Creek | 6 | 6 | Aug 26, 2020 |
Questions about hail in Mellette County
How often does it hail in Mellette County, South Dakota?
164 hail reports have been logged in Mellette County since 1971. Over the 20 years 2006–2025 that averages 4.5 reports a year. That ranks #47 of 67 South Dakota counties by number of reports.
When is hail season in Mellette County?
Most reports come in August, June, July. August alone accounts for 31% of all reports.
What is the largest hail recorded in Mellette County?
4.50 in (softball size) on August 26, 2020 near 6 E Norris. 8% of reports here were 2 inches or larger.
When did it last hail in Mellette County?
The most recent report in this data is from June 29, 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 Mellette County had in the last five years?
11 separate days with hail reports since November 3, 2021, adding up to 16 reports. The most recent was June 29, 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.