HailHistory › Hail by county › South Dakota › Clark County
South Dakota · county FIPS 46025
Hail history for Clark County, SD
Clark County has 233 recorded hail events in the NOAA Storm Events Database — 138 of them 1″ or larger and 20 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on May 5, 1964.
Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.
When it hails in Clark County
Recorded events by month, 1950–present. The amber bar marks Clark County's peak: July.
Most recent recorded events
| Date | Size | Comparable to |
|---|---|---|
| 1.0″ | Quarter | |
| 1.75″ | Golf ball | |
| 1.0″ | Quarter | |
| 0.75″ | Penny | |
| 1.0″ | Quarter | |
| 1.0″ | Quarter | |
| 1.75″ | Golf ball | |
| 1.25″ | Half dollar |
Looking for a specific storm? Use the did-it-hail date lookup for Clark County.
From the storm reports
Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).
· 1.25″ (half dollar)
Mostly quarter size hail, with a few larger stones, covered the ground with no gravel visible on roads. The hail was three inches deep in some spots.
· 2.75″ (baseball)
Baseball hail took out hundreds of windows in homes and on vehicles throughout Clark along with damaging siding on residences and denting vehicles. Trees and gardens also suffered extensive damage from the hail and wind.
· 2.75″ (baseball)
A supercell thunderstorm tracking southeast across Clark county produced anywhere from quarter to baseball size hail along with wind gusts over 70 mph from Crocker to Clark to Naples to Vienna. The large hail and winds caused extensive damage to homes, outbuildings, vehicles, and thousands of acres of crops. Many trees and gardens were also damaged or destroyed by the hail and high winds.
Events by decade
| 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|
| 0 | 10 | 3 | 20 | 41 | 96 | 44 | 19 |
The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.
Questions about hail in Clark County
Has it ever hailed in Clark County?
Yes — 233 hail events have been recorded for Clark County, SD in the NOAA Storm Events Database since 1963, including 138 of 1″ (quarter size) or larger.
When did it last hail in Clark County?
The most recent recorded hail event for Clark County, SD is June 19, 2025, with 1.0″ (quarter) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.
What is the largest hail ever recorded in Clark County?
4.5″ (grapefruit), recorded on May 5, 1964. Hail that size is destructive-class and typically damages roofs, vehicles, and siding. See how big that really is on the actual-size hail chart.
Does a recorded hail event mean my roof was damaged?
No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.
More South Dakota hail history
- Pennington County 1,614
- Meade County 871
- Custer County 682
- Lawrence County 533
- Minnehaha County 494
- Brown County 437
Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.