Hail History

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Hail history for Stanley County, SD

Last hail in the countyJul 25, 20262 in (hen egg)
Hail days, last 12 months2
Largest hail since 20062.75 in (baseball)Jul 18, 2023
Hail days since 200669
Days with hail 1 inch or larger54
Tornadoes in the county4
Damaging wind reports in the county159

109 hail reports in Stanley County since 2006 on 69 days. The largest stones measured 2.75 in (baseball) on Jul 18, 2023.

Recent hail in Stanley County

DateHail sizeWhereSource
Jul 25, 20262 in
hen egg		West Shore Rec Ar, Fort Pierre
2 hail reports		NWS storm report (preliminary)
Jun 9, 20261 in
quarter		Fort Pierre, Hayes Airstrip
2 hail reports		NOAA Storm Events
Jul 26, 20251.25 in
half dollar		Orton
1 hail report		NOAA Storm Events
Jul 20, 20252.5 in
tennis ball		Hayes
1 hail report		NOAA Storm Events
Jul 14, 20251 in
quarter		Orton
1 hail report		NOAA Storm Events

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in Stanley County by year

506407608409210411212213314615616217218119520221222523124325226

When hail season peaks in Stanley County

JanFebMar2Apr7May25Jun16Jul14Aug5SepOctNovDec

Damaging thunderstorm winds in Stanley County

159 reports of damaging thunderstorm wind in Stanley County since 2006, on 89 days. The strongest measured gust was 122 mph on Jun 22, 2015.

DateStrongest gustWhereSource
Sep 7, 202673 mph, measuredFort Pierre, Hayes
2 wind reports		NWS storm report (preliminary)
Aug 17, 202660 mph, measuredSansarc, Hayes, Chantier Creek Recr
5 wind reports		NWS storm report (preliminary)
Jul 29, 202665 mph, measuredHayes
2 wind reports		NWS storm report (preliminary)
Jul 25, 202662 mph, measuredSansarc, Fort Pierre
3 wind reports		NWS storm report (preliminary)
Jul 3, 202665 mph, measuredFort Pierre
1 wind report		NWS storm report (preliminary)
Jul 14, 202564 mph, measuredBunker
1 wind report		NOAA Storm Events
Aug 21, 202464 mph, measuredHayes Hamilton Airport
1 wind report		NOAA Storm Events
Jul 14, 2024109 mph, measuredHayes Hamilton Airport, Lacy, Bunker
9 wind reports		NOAA Storm Events
Jun 27, 202466 mph, measuredHayes, Hayes Hamilton Airport, Lacy
3 wind reports		NOAA Storm Events
May 19, 202481 mph, estimatedHayes Hamilton Airport, Mission Ridge, Lacy
4 wind reports		NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Stanley County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).