Hail History

Home › Montana › Custer County

Hail history for Custer County, MT

Last hail in the countyAug 17, 20260.7 in
Hail days, last 12 months1
Largest hail since 20063.5 inJun 17, 2014
Hail days since 200656
Days with hail 1 inch or larger46
Tornadoes in the county2
Damaging wind reports in the county145

131 hail reports in Custer County since 2006 on 56 days. The largest stones measured 3.5 in on Jun 17, 2014.

Cities in Custer County

Recent hail in Custer County

DateHail sizeWhereSource
Aug 17, 20260.7 inMizpah, Tusler
2 hail reports		NWS storm report (preliminary)
Jul 29, 20252 in
hen egg		Sheffield, Volborg
3 hail reports		NOAA Storm Events
Jul 28, 20251 in
quarter		Ismay
1 hail report		NOAA Storm Events
Jul 25, 20251 in
quarter		Ismay
1 hail report		NOAA Storm Events
Jun 20, 20251.25 in
half dollar		Miles City
3 hail reports		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 Custer County by year

20620720830911061141241311441521611751861932021122323124425126

When hail season peaks in Custer County

JanFeb1Mar1Apr7May16Jun20Jul9Aug2SepOctNovDec

Damaging thunderstorm winds in Custer County

145 reports of damaging thunderstorm wind in Custer County since 2006, on 77 days. The strongest measured gust was 94 mph on Jun 14, 2006.

DateStrongest gustWhereSource
Sep 7, 202646 mph, measuredKnowlton
1 wind report		NWS storm report (preliminary)
Aug 30, 202649 mph, measuredMiles City, Ulmer
3 wind reports		NWS storm report (preliminary)
Jul 3, 202658 mph, measuredKnowlton
1 wind report		NWS storm report (preliminary)
Aug 17, 202566 mph, measuredMiles City Airport, Miles City
2 wind reports		NOAA Storm Events
Aug 7, 202574 mph, measuredMiles City Airport
1 wind report		NOAA Storm Events
Jul 29, 202563 mph, estimatedKinsey
1 wind report		NOAA Storm Events
Jul 20, 202569 mph, estimatedFort Keogh, Miles City Airport
2 wind reports		NOAA Storm Events
Jul 19, 202560 mph, estimatedKnowlton
1 wind report		NOAA Storm Events
Jun 15, 202581 mph, measuredMiles City Airport
1 wind report		NOAA Storm Events
Jul 13, 202477 mph, measuredMiles City, Knowlton, Miles City Airport
10 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 Custer 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).