Lekin › Colorado › Boulder County › Longmont

Hail history for Longmont, CO

Haili ijiin 10 mileJul 28, 20261.00 in (25-sent coin)

Ane haili, 12 mwwoon ijiin2

Haili ane pwon ijiin 20062.50 in (tennis ball)Jun 4, 2015

Ane haili ijiin 200654

Ane haili 1 inch o pwon40

Tornado ijiin 10 mile4

Wind reports within 10 miles17

Hail has been reported within 10 miles of Longmont on 54 days since 2006. The largest stones measured 2.50 in (tennis ball) on Jun 4, 2015. Hail is most common here in May and June.

Longmont ranks #199 for hail days among the 1,399 U.S. cities of 25,000 to 100,000 people. Ara ranking →

Recent hail near Longmont

Date	Size hail	Where	Source
Jul 28, 2026	1.00 in 25-sent coin	Lyons 1 hail report · closest 10 mi from Longmont	NWS storm report (preliminary)
Jun 24, 2026	1.75 in golf ball	Berthoud 3 hail reports · closest 9 mi from Longmont	NOAA Storm Events
Aug 10, 2025	1.00 in 25-sent coin	Niwot, Lafayette 5 hail reports · closest 8 mi from Longmont	NOAA Storm Events
Jul 11, 2025	0.75 in 1-sent coin	Niwot 1 hail report · closest 8 mi from Longmont	NOAA Storm Events
Jun 25, 2025	1.00 in 25-sent coin	Firestone 2 hail reports · closest 8 mi from Longmont	NOAA Storm Events
Jun 17, 2025	1.00 in 25-sent coin	Lafayette, Erie 3 hail reports · closest 9 mi from Longmont	NOAA Storm Events
May 18, 2025	0.75 in 1-sent coin	Mead 1 hail report · closest 7 mi from Longmont	NOAA Storm Events
May 14, 2025	1.25 in 50-sent coin	Erie, Frederick 5 hail reports · closest 8 mi from Longmont	NOAA Storm Events

Lukkuun foy chukw: hail kauchuw kaachin foy, anamw, is foy kaachin anamw.

Nn̄an anam̄mool ekkar Longmont meir

Ka anam̄mool ekkar kaan Longmont

Of 54 nn̄an anam̄mool ekkar 2006, most fell in May (15) and June (14).

Anam̄mool ekkar kaan Longmont

Jun 4, 2015 · 2.50 in (tennis ball) · Lyons (10 mi from Longmont)

May 22, 2008 · 2.00 in (hen egg) · Liberty (2 mi from Longmont)

May 9, 2023 · 2.00 in (hen egg) · Erie (9 mi from Longmont)

Jun 28, 2013 · 1.75 in (golf ball) · Lyons (10 mi from Longmont)

Jun 18, 2018 · 1.75 in (golf ball) · Mead (7 mi from Longmont)

Tornadoes within 10 miles of Longmont

Date	Rating	Where	Path
Jun 4, 2015	EF3	Highland 6 mi from Longmont	5.8 mi long, 440 yd wide
Jun 4, 2015	EF3	Berthoud 8 mi from Longmont	0.9 mi long, 440 yd wide
Aug 3, 2013	EF0	Erie 8 mi from Longmont	0.1 mi long, 50 yd wide
Jun 9, 2009	EF0	Liberty 6 mi from Longmont	0.1 mi long, 50 yd wide

Damaging thunderstorm winds near Longmont

17 reports of damaging thunderstorm wind within 10 miles of Longmont since 2006, on 12 days. The strongest measured gust was 72 mph on Mar 30, 2014.

Date	Strongest gust	Where	Source
Jul 20, 2024	64 mph, a measured	Berthoud, Niwot 3 wind reports	NOAA Storm Events
Jun 6, 2020	81 mph, a estimat	Firestone 1 wind report	NOAA Storm Events
Jun 28, 2019	58 mph, a measured	Longmont Muni Airport 1 wind report	NOAA Storm Events
Aug 4, 2018	60 mph, a measured	Firestone 1 wind report	NOAA Storm Events
Jul 25, 2018	81 mph, a estimat	Erie 1 wind report	NOAA Storm Events
Aug 4, 2017	70 mph, a estimat	Niwot 1 wind report	NOAA Storm Events
Jul 14, 2014	60 mph, a measured	Plumbs 1 wind report	NOAA Storm Events
Mar 30, 2014	72 mph, a measured	Longmont, Firestone, Liberty 3 wind reports	NOAA Storm Events
Aug 3, 2013	68 mph, a measured	Erie 1 wind report	NOAA Storm Events
Sep 3, 2012	68 mph, a measured	Hygiene, Longmont 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 Longmont; 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.

Cities nearby

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 Longmont.

Run a roofing company or a local news site? Show Longmont's hail history on your website with our widget gratis →

Roofing or restoration company? Get an email within the hour when hail is reported near Longmont with our hail alerts ($29 a month) →