Hail History

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Hail history for Montana City, MT

Last hail within 10 milesSep 13, 20260.5 in (marble)
Hail days, last 12 months3
Largest hail since 20061.5 in (ping pong ball)Aug 7, 2016
Hail days since 200618
Days with hail 1 inch or larger15
Damaging wind reports within 10 miles35

Hail has been reported within 10 miles of Montana City on 18 days since 2006. The largest stones measured 1.5 in (ping pong ball) on Aug 7, 2016. Hail is most common here in July and June.

Recent hail near Montana City

DateHail sizeWhereSource
Sep 13, 20260.5 in
marble		East Helena
1 hail report · closest 4 mi from Montana City		NWS storm report (preliminary)
Jul 16, 20261 in
quarter		Clancy
2 hail reports · closest 4 mi from Montana City		NWS storm report (preliminary)
Jun 25, 20261 in
quarter		Helena Rgnl Airport, East Helena
2 hail reports · closest 4 mi from Montana City		NOAA Storm Events
Jul 28, 20251 in
quarter		Clancy
1 hail report · closest 2 mi from Montana City		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 Montana City by year

106207108109210111122131141511617182192021222324125326

When hail season peaks near Montana City

Of the 18 hail days since 2006, most fell in July (6) and June (5).

JanFebMarApr2May5Jun6Jul4Aug1SepOctNovDec

Largest hail storms near Montana City

Aug 7, 2016 · 1.5 in (ping pong ball) · Winston (7 mi from Montana City)

Jul 17, 2013 · 1.25 in (half dollar) · Helena (4 mi from Montana City)

Jun 16, 2007 · 1 in (quarter) · Helena (5 mi from Montana City)

May 30, 2008 · 1 in (quarter) · Helena (7 mi from Montana City)

Jul 6, 2009 · 1 in (quarter) · Clancy (4 mi from Montana City)

Damaging thunderstorm winds near Montana City

35 reports of damaging thunderstorm wind within 10 miles of Montana City since 2006, on 26 days. The strongest measured gust was 71 mph on Sep 2, 2026.

DateStrongest gustWhereSource
Sep 2, 202673 mph, estimatedHelena, East Helena
4 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 9, 202558 mph, measuredLouisville
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

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 Montana City; 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 Montana City.

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