HailEvidence → hail history by county → South Dakota → Union County
Hail dates in Union County, South Dakota
The National Weather Service has recorded hail in Union County on 22 days since 2016 (29 separate reports, 20 of them quarter-size or larger). The largest stone on record was 1.75" (golf ball) on June 2, 2025; the most recent hail was May 31, 2026. Every row below is an official NWS record. Check hail at your exact address, free →
Every hail day in Union County since 2016
One row per day the NWS logged hail somewhere in the county. The narrative names the town; the free check below narrows it to your address.
| Date | Largest hail | Reports | NWS narrative |
|---|---|---|---|
| 2026-05-31 | 1.00" (quarter) | 1 | Most hail was pea to nickel sized, but a few were quarter sized. A wall cloud was also reported about 3 to 4 miles to the west. |
| 2026-05-18 | 0.88" (nickel) | 1 | — |
| 2025-06-14 | 1.25" (half dollar) | 2 | — |
| 2025-06-02 | 1.75" (golf ball) | 3 | Ping pong to golf ball size hail occurred between mile markers 19 and 22 on Interstate 29. A semi truck ran into another semi truck in the adjoining lane and… |
| 2025-04-17 | 1.00" (quarter) | 1 | — |
| 2024-06-25 | 0.75" (penny) | 1 | — |
| 2024-05-20 | 1.75" (golf ball) | 1 | Quarter to golf ball sized hail fell at the Sheriff's office. Hail was accompanied by strong winds. |
| 2024-04-16 | 1.25" (half dollar) | 1 | — |
| 2023-07-03 | 1.00" (quarter) | 1 | — |
| 2023-06-24 | 1.00" (quarter) | 1 | — |
| 2023-05-08 | 1.00" (quarter) | 1 | — |
| 2023-04-19 | 1.50" (ping pong ball) | 3 | Hail in Elk Point ranged from 1.0 to 1.5 inches in diameter. |
| 2023-03-30 | 1.25" (half dollar) | 1 | Half dollar size hail was observed two miles north-northwest of Jefferson. The largest hail only lasted for one minute in duration. |
| 2022-05-12 | 0.75" (penny) | 1 | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2021-10-20 | 0.75" (penny) | 1 | — |
| 2021-08-30 | 1.75" (golf ball) | 2 | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2021-07-08 | 1.00" (quarter) | 1 | — |
| 2020-10-11 | 1.50" (ping pong ball) | 1 | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2019-05-31 | 0.88" (nickel) | 1 | — |
| 2017-08-19 | 1.00" (quarter) | 1 | — |
| 2017-06-29 | 1.25" (half dollar) | 2 | — |
| 2016-04-24 | 0.75" (penny) | 1 | — |
Hail days by year
| Year | Hail days | Reports | Largest |
|---|---|---|---|
| 2026 | 2 | 2 | 1.00" (quarter) |
| 2025 | 3 | 6 | 1.75" (golf ball) |
| 2024 | 3 | 3 | 1.75" (golf ball) |
| 2023 | 5 | 7 | 1.50" (ping pong ball) |
| 2022 | 1 | 1 | 0.75" (penny) |
| 2021 | 3 | 4 | 1.75" (golf ball) |
| 2020 | 1 | 1 | 1.50" (ping pong ball) |
| 2019 | 1 | 1 | 0.88" (nickel) |
| 2017 | 2 | 3 | 1.25" (half dollar) |
| 2016 | 1 | 1 | 0.75" (penny) |
Damaging wind in Union County
Thunderstorm wind of 58 mph or more (the NWS severe threshold), 54 reports since 2016, strongest 90 mph. Wind and tornado records are included in the extended report.
| Date | Peak gust | Reports | NWS narrative |
|---|---|---|---|
| 2024-05-20 | 90 mph | 2 | Windows were broken and portions of the roof were removed from a single family home. | The thunderstorm winds also downed numerous large … |
| 2025-06-02 | 85 mph | 3 | A machine shed was destroyed with debris blown across Burbank road. A few large limbs were broken off trees. A few grain bins were dente… |
| 2022-05-12 | 85 mph | 9 | Numerous trees were snapped with powerlines down throughout Dakota Dunes. |
| 2025-07-28 | 81 mph | 5 | Significant tree and powerline damage from an extended period of thunderstorm winds throughout Beresford. Several business signs were dam… |
| 2023-07-12 | 81 mph | 3 | Thunderstorm wind gusts as high as 80 mph were measured by South Dakota Road Weather Information System site SD508 3 miles south-southwes… |
| 2018-06-01 | 81 mph | 1 | At the corner of State Highway 11 and 300th St., thunderstorm winds leveled a seed warehouse and office. The debris was spread across the… |
| 2024-07-30 | 75 mph | 2 | Thunderstorm winds downed a large tree in Alcester. |
| 2019-09-10 | 75 mph | 1 | Winds snapped a few large trees off a few feet above the ground. Lots of tree limbs down, and numerous shingles removed from house. |
Was hail recorded at your Union County address? Check free
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address? Enter coordinates as 44.05, -107.31.
Address lookup by the U.S. Census Bureau geocoder. Records: NOAA NCEI Storm Events (final) plus SPC preliminary reports for storms newer than the latest compile — see methodology.
Need it in writing for a claim?
The verification report lists every NWS hail (and, in the extended version, wind and tornado) record within 1, 3 and 10 miles of one address, each linked to its official source, with the disputed date called out in plain English. Adjusters can verify every line.
10-year hail history for one address + the disputed-date finding.
15-year window, wind & tornado records, plus a drafted claim-appeal letter.
Questions
What date did hail last hit Union County?
May 31, 2026, per the NWS Storm Events record. The largest since 2016 was 1.75" (golf ball) on June 2, 2025.
Does a county record prove hail at my house?
No. NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure. The free check above shows what was recorded near your specific address, with distances.
Nearby counties
Dixon County, NE (20 mi) · Clay County, SD (20 mi) · Plymouth County, IA (24 mi) · Sioux County, IA (31 mi) · Cedar County, NE (32 mi) · Woodbury County, IA (36 mi) · Yankton County, SD (39 mi) · Turner County, SD (44 mi)
See also: South Dakota hail history by city · all counties