Hail history for Day County, South Dakota
Every NOAA hail report filed in Day County since 1961, with preliminary National Weather Service reports to November 3, 2026.
Readout · Day County
- Last hail
- Jul 7, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 13
- since Nov 3, 2021 · 18 reports
- Largest ever
- 4.00 in
- grapefruit · Jul 1, 1969
208 reports on 130 days since 1961 · #32 of 67 South Dakota counties
Hail map · Day County
- 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 Day County is from July 7, 2026. A local roofer can check and document it at no cost.
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What the record says about Day County
The latest hail report in Day County is from July 7, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 13 separate hail days; the biggest stones in that time were 2.00 in on June 2, 2024.
Over the 20 years 2006–2025, Day County logged 111 reports on 65 hail days, about 5.5 reports a year. That is about the same as the median South Dakota county (5.5 a year) and ranks #32 of 67 South Dakota counties for all-time reports. Day 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 4.00 in (grapefruit) on July 1, 1969.
Reports were down 34% in 2016–2025 (44) compared with 2006–2015 (67). The busiest year was 2006, with 15 reports on 8 days. Hail here peaks in June (30% of reports); 47% fall between April and June.
Reports a year 2006–2025 average
- Day County 5.5
- Median South Dakota county 5.5
Hail days 2006–2025
- Day County 65
- Median South Dakota county 54
Share 2 in or larger of sized reports
- Day 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 | |||||||||||
| 2025 | 2 | 1 | 3 | 6 | |||||||||
| 2024 | 4 | 2 | 6 | ||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 1 | 2 | 1 | 4 | |||||||||
| 2021 | 7 | 7 | |||||||||||
| 2020 | 1 | 3 | 4 | ||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 3 | 3 | |||||||||||
| 2017 | 1 | 1 | 2 | 1 | 5 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jul 7, 2026 | 1 | 1.00 in | — |
| Aug 14, 2025 | 1 | 1.50 in | — |
| Aug 5, 2025 | 2 | 1.50 in | — |
| Jul 28, 2025 | 1 | 1.00 in | — |
| Jun 16, 2025 | 2 | 1.25 in | — |
| Jul 6, 2024 | 2 | 1.00 in | — |
| Jun 12, 2024 | 1 | 1.00 in | — |
| Jun 2, 2024 | 3 | 2.00 in | — |
| Jul 13, 2023 | 1 | 1.00 in | — |
| Aug 5, 2022 | 1 | 1.50 in | — |
| Jun 24, 2022 | 1 | 0.88 in | — |
| Jun 20, 2022 | 1 | 1.00 in | — |
| May 9, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 1, 1969 | 4.00 ingrapefruit | — | 17:00 local · NCEI |
| May 5, 1964 | 3.00 inteacup | — | 09:00 local · NCEI |
| Aug 10, 2006 | 2.75 inbaseball | 1 E Roslyn | 18:12 local · NCEI |
| May 17, 1996 | 2.75 inbaseball | 2 S Pierpont | 15:30 local · NCEI |
| Jul 29, 1986 | 2.75 inbaseball | — | 22:05 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 80 39%
- 1–2 in 110 53%
- 2 in + 17 8%
- No size 1
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 7, 2026 | 1.00 inquarter | 1.61 ENE Holmquist | 20:18 local · NCEI |
| Aug 14, 2025 | 1.50 inping pong ball | 7.75 E Pierpont | 01:00 local · NCEI |
| Aug 5, 2025 | 1.50 inping pong ball | 1.61 ENE Holmquist | 18:48 local · NCEI |
| Aug 5, 2025 | 0.88 innickel | 2.29 NNW Bristol | 18:34 local · NCEI |
| Jul 28, 2025 | 1.00 inquarter | 6.75 NE Roslyn | 17:05 local · NCEI |
| Jun 16, 2025 | 1.25 inhalf dollar | 6.88 ENE Grenville | 04:05 local · NCEI |
| Jun 16, 2025 | 1.00 inquarter | 6.17 ENE Grenville | 04:00 local · NCEI |
| Jul 6, 2024 | 1.00 inquarter | Pierpont | 15:45 local · NCEI |
| Jul 6, 2024 | 1.00 inquarter | 3.97 WSW Pierpont | 15:43 local · NCEI |
| Jun 12, 2024 | 1.00 inquarter | 5.55 S Roslyn | 04:52 local · NCEI |
| Jun 2, 2024 | 2.00 inhen egg | 1.38 S Webster Muni Arpt | 19:58 local · NCEI |
| Jun 2, 2024 | 1.75 ingolf ball | 0.69 N Webster Muni Arpt | 19:58 local · NCEI |
Cities and towns in Day 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 |
|---|---|---|---|
| Enemy Swim | 8 | 8 | Aug 12, 2020 |
| Roslyn | 7 | 6 | Aug 9, 2017 |
| Butler | 6 | 6 | Aug 28, 2021 |
| Andover | 5 | 5 | May 28, 2018 |
| Grenville | 4 | 4 | Jun 24, 2009 |
Questions about hail in Day County
How often does it hail in Day County, South Dakota?
208 hail reports have been logged in Day County since 1961. Over the 20 years 2006–2025 that averages 5.5 reports a year. That ranks #32 of 67 South Dakota counties by number of reports.
When is hail season in Day County?
Most reports come in June, August, July. June alone accounts for 30% of all reports.
What is the largest hail recorded in Day County?
4.00 in (grapefruit size) on July 1, 1969. 8% of reports here were 2 inches or larger.
When did it last hail in Day County?
The most recent report in this data is from July 7, 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 Day County had in the last five years?
13 separate days with hail reports since November 3, 2021, adding up to 18 reports. The most recent was July 7, 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.