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Hail history for Malmstrom Air Force Base, MT
Hail has been reported within 10 miles of Malmstrom Air Force Base on 25 days since 2006. The largest stones measured 2.5 in (tennis ball) on Jul 7, 2022. Hail is most common here in June and July.
Recent hail near Malmstrom Air Force Base
| Date | Hail size | Where |
|---|---|---|
| Jul 8, 2026 | 0.5 in marble | Great Falls 1 hail report · closest 7 mi from Malmstrom Air Force Base |
| Jul 31, 2025 | 1 in quarter | Great Falls 1 hail report · closest 7 mi from Malmstrom Air Force Base |
| Jun 15, 2025 | 1 in quarter | Great Falls, Portage 8 hail reports · closest 5 mi from Malmstrom Air Force Base |
One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.
Hail days near Malmstrom Air Force Base by year
When hail season peaks near Malmstrom Air Force Base
Of the 25 hail days since 2006, most fell in June (10) and July (8).
Largest hail storms near Malmstrom Air Force Base
Jul 7, 2022 · 2.5 in (tennis ball) · Great Falls (7 mi from Malmstrom Air Force Base)
National Weather Service description (English): Public report estimating 2.5 inch hail via photo 3 miles WNW of Black Eagle.Jun 16, 2007 · 1.75 in (golf ball) · Great Falls (6 mi from Malmstrom Air Force Base)
National Weather Service description (English): A severe thunderstorm dropped 1.75 inch diameter hail in downtown Great Falls.Jun 6, 2011 · 1.5 in (ping pong ball) · Great Falls (3 mi from Malmstrom Air Force Base)
Jun 11, 2016 · 1.5 in (ping pong ball) · Great Falls (6 mi from Malmstrom Air Force Base)
Aug 18, 2016 · 1.5 in (ping pong ball) · Great Falls (6 mi from Malmstrom Air Force Base)
Damaging thunderstorm winds near Malmstrom Air Force Base
77 reports of damaging thunderstorm wind within 10 miles of Malmstrom Air Force Base since 2006, on 46 days. The strongest measured gust was 83 mph on Sep 2, 2026.
| Date | Strongest gust | Where |
|---|---|---|
| Sep 25, 2026 | 52 mph, measured | Malmstrom AFB 1 wind report |
| Sep 2, 2026 | 83 mph, measured | Great Falls, Belt, Malmstrom AFB 4 wind reports |
| Aug 27, 2026 | 62 mph, estimated | Belt 1 wind report |
| Jul 18, 2026 | 70 mph, measured | Great Falls, Malmstrom AFB 3 wind reports |
| Jul 17, 2026 | 53 mph, measured | Great Falls 1 wind report |
| Jul 12, 2026 | 64 mph, measured | Great Falls 1 wind report |
| May 13, 2026 | 69 mph, measured | Great Falls Airport, Fife, Malmstrom AFB 4 wind reports |
| Dec 26, 2025 | 66 mph, measured | Great Falls Airport 1 wind report |
| Aug 19, 2025 | 70 mph, measured | Rainbow, Great Falls Airport, Great Falls 3 wind reports |
| May 11, 2025 | 59 mph, estimated | Great Falls, Great Falls Airport 3 wind reports |
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 Malmstrom Air Force Base; 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 Malmstrom Air Force Base.
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