Hail History

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Hail history for Dewey County, SD

Last hail in the countyAug 24, 20261.75 in (golf ball)
Hail days, last 12 months2
Largest hail since 20064 in (grapefruit)Jul 5, 2022
Hail days since 200679
Days with hail 1 inch or larger66
Tornadoes in the county10
Damaging wind reports in the county154

164 hail reports in Dewey County since 2006 on 79 days. The largest stones measured 4 in (grapefruit) on Jul 5, 2022.

Recent hail in Dewey County

DateHail sizeWhereSource
Aug 24, 20261.75 in
golf ball		Swan Creek Rec Ar
1 hail report		NWS storm report (preliminary)
Jun 3, 20261 in
quarter		Parade, Whitehorse
2 hail reports		NOAA Storm Events
Jul 26, 20251.5 in
ping pong ball		Promise
1 hail report		NOAA Storm Events
Jul 14, 20251 in
quarter		Timber Lake
1 hail report		NOAA Storm Events
Jun 15, 20251 in
quarter		Glencross
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 Dewey County by year

406507908309410411112713414215216117618319220621622223324325226

When hail season peaks in Dewey County

JanFebMar2Apr9May27Jun26Jul12Aug3SepOctNovDec

Damaging thunderstorm winds in Dewey County

154 reports of damaging thunderstorm wind in Dewey County since 2006, on 85 days. The strongest measured gust was 142 mph on Jun 16, 2010.

DateStrongest gustWhereSource
Aug 30, 202666 mph, measuredTimber Lake
1 wind report		NWS storm report (preliminary)
Aug 17, 202660 mph, estimatedLantry
1 wind report		NWS storm report (preliminary)
Jul 27, 202668 mph, measuredLantry
1 wind report		NWS storm report (preliminary)
Jul 25, 202676 mph, measuredLantry, Parade, Ridgeview
3 wind reports		NWS storm report (preliminary)
Jul 19, 202658 mph, measuredTimber Lake
1 wind report		NWS storm report (preliminary)
Jun 7, 202664 mph, measuredTimber Lake, Timber Lake Airport
2 wind reports		NOAA Storm Events
Sep 13, 202570 mph, measuredParade
1 wind report		NOAA Storm Events
Aug 18, 202562 mph, measuredEagle Butte, Lantry, Bear Creek
3 wind reports		NOAA Storm Events
Aug 17, 202562 mph, measuredLa Plant
1 wind report		NOAA Storm Events
Jul 23, 202561 mph, measuredLa Plant, Parade
2 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 Dewey 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).