Hail History

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Hail history for Helena, MT

Last hail within 10 milesSep 13, 20260.5 in (marble)
Hail days, last 12 months3
Largest hail since 20061.75 in (golf ball)Aug 15, 2014
Hail days since 200620
Days with hail 1 inch or larger18
Damaging wind reports within 10 miles30

Hail has been reported within 10 miles of Helena on 20 days since 2006. The largest stones measured 1.75 in (golf ball) on Aug 15, 2014. Hail is most common here in July and June.

Helena ranks #863 for hail days among the 1,399 U.S. cities of 25,000 to 100,000 people. See the ranking →

Recent hail near Helena

DateHail sizeWhereSource
Sep 13, 20260.5 in
marble		East Helena
1 hail report · closest 7 mi from Helena		NWS storm report (preliminary)
Jul 16, 20261 in
quarter		Clancy
2 hail reports · closest 7 mi from Helena		NWS storm report (preliminary)
Jun 25, 20261 in
quarter		Iron, Helena Rgnl Airport, East Helena
3 hail reports · closest 1 mi from Helena		NOAA Storm Events
Jul 28, 20251 in
quarter		Clancy
1 hail report · closest 8 mi from Helena		NOAA Storm Events

One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.

Hail days near Helena by year

0620710810921011112213214151161171821912021222324125326

When hail season peaks near Helena

Of the 20 hail days since 2006, most fell in July (7) and June (6).

JanFebMarApr3May6Jun7Jul3Aug1SepOctNovDec

Largest hail storms near Helena

Jul 2, 2013 · 1.75 in (golf ball) · Helena (8 mi from Helena)

National Weather Service description (English): Hail measuring 1.75 inches was reported 9 mi NNE of Helena, MT.

Aug 15, 2014 · 1.75 in (golf ball) · Unionville (7 mi from Helena)

National Weather Service description (English): Large hail, measuring 1.75 inches (golf ball sized), was reported along with heavy rain.

Jun 16, 2007 · 1.5 in (ping pong ball) · Helena (5 mi from Helena)

Jun 1, 2017 · 1.5 in (ping pong ball) · Helena (9 mi from Helena)

Jul 17, 2013 · 1.25 in (half dollar) · Helena (3 mi from Helena)

Damaging thunderstorm winds near Helena

30 reports of damaging thunderstorm wind within 10 miles of Helena since 2006, on 24 days. The strongest measured gust was 71 mph on Sep 2, 2026.

DateStrongest gustWhereSource
Sep 2, 202673 mph, estimatedHelena
2 wind reports		NWS storm report (preliminary)
Aug 28, 202654 mph, measuredHelena
1 wind report		NWS storm report (preliminary)
Aug 26, 202648 mph, measuredHelena
1 wind report		NWS storm report (preliminary)
Jul 30, 202654 mph, measuredHelena
1 wind report		NWS storm report (preliminary)
Jul 23, 202662 mph, measuredHelena
2 wind reports		NWS storm report (preliminary)
Sep 14, 202558 mph, estimatedIron
1 wind report		NOAA Storm Events
Jul 2, 202560 mph, measuredHelena Rgnl Airport
1 wind report		NOAA Storm Events
May 10, 202562 mph, measuredHelena Rgnl Airport
2 wind reports		NOAA Storm Events
Sep 11, 202463 mph, measuredHelena Rgnl Airport
1 wind report		NOAA Storm Events
Aug 23, 202462 mph, measuredBroadwater
1 wind report		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 Helena; 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.

Nearby cities

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then). Distances are measured from the center of Helena.

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