Hail History

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Hail history for Helena Valley Northwest, MT

Last hail within 10 milesJun 25, 20261 in (quarter)
Hail days, last 12 months1
Largest hail since 20061.75 in (golf ball)Jul 2, 2013
Hail days since 20069
Days with hail 1 inch or larger9
Damaging wind reports within 10 miles36

Hail has been reported within 10 miles of Helena Valley Northwest on 9 days since 2006. The largest stones measured 1.75 in (golf ball) on Jul 2, 2013. Hail is most common here in June and July.

Recent hail near Helena Valley Northwest

DateHail sizeWhereSource
Jun 25, 20261 in
quarter		Iron, Helena Rgnl Airport
2 hail reports · closest 3 mi from Helena Valley Northwest		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 Valley Northwest by year

061071081091011112113114151617181912021222312425126

When hail season peaks near Helena Valley Northwest

Of the 9 hail days since 2006, most fell in June (3) and July (3).

JanFebMarApr2May3Jun3Jul1AugSepOctNovDec

Largest hail storms near Helena Valley Northwest

Jul 6, 2009 · 1.75 in (golf ball) · Canyon Creek (4 mi from Helena Valley Northwest)

National Weather Service description (English): A thunderstorm dropped 1.75 inch diameter hail at Canyon Creek 7SE.

Jul 2, 2013 · 1.75 in (golf ball) · Helena (5 mi from Helena Valley Northwest)

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

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

Aug 6, 2024 · 1.5 in (ping pong ball) · Silver City (5 mi from Helena Valley Northwest)

May 30, 2008 · 1 in (quarter) · Helena (8 mi from Helena Valley Northwest)

Damaging thunderstorm winds near Helena Valley Northwest

36 reports of damaging thunderstorm wind within 10 miles of Helena Valley Northwest since 2006, on 27 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
Aug 23, 202462 mph, measuredSilver City, Broadwater, Iron
3 wind reports		NOAA Storm Events
May 28, 202459 mph, measuredHelena Rgnl Airport
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 Helena Valley Northwest; 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 Valley Northwest.

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