Hail Reports in Longmont, Colorado — Last 90 Days

Hail is a recurring, budgetable risk in Longmont — roughly 7 hail-producing storms in a typical year. The 90-day log below shows where the most recent activity landed relative to town, so you can judge whether your street was in a hail path.

Longmont's Storm-Climate Context

Longmont sits in a cold semi-arid climate at the Colorado Front Range with 32.2 inches of average annual snowfall and 15.21 inches of total precipitation. The record high reached 106 F on July 7, 1973, and again on June 27, 1994, while the record low plunged to -38 F on January 16, 1930. Temperature swings of that magnitude drive severe expansion-contraction cycling in shingles and sealants. Front Range storms regularly produce large hail from late spring through summer, stripping granules and denting metal panels. Heavy snowpack loads test low-pitch roof structures each winter, and UV intensity at elevation accelerates membrane degradation faster than at sea level.

Longmont had 98,885 residents per the 2020 census with a median household income near $90,000, signaling a relatively affluent market capable of supporting quality reroofing projects. The top 2020 employer is St. Vrain Valley Schools at 3,543 workers, followed by the City of Longmont at 1,625 and Seagate Technology at 1,430. The manufacturing and technology employment base sustains steady commercial roofing demand alongside residential. Colorado hail season combined with Front Range growth keeps both insurance-claim and elective replacement pipelines active for local contractors.

Hail Events Near Longmont by Date

August 22, 2026 — 1 report, hail up to 1.00″ (quarter size) Largest in 90 days

July 28, 2026 — 1 report, hail up to 1.00″ (quarter size) Largest in 90 days

Preliminary Local Storm Reports from the NOAA Storm Prediction Center. Sizes are reported hailstone diameters; times are UTC. Reports can be added or corrected for about a day after each event. A quiet page section ≠ no hail — smaller or unreported events happen. The closest report in this window landed 9.9 miles from Longmont's center.

Circle positions are the NOAA SPC report coordinates; tap a circle for the date and hail size.

Hail size: < 1″ 1–1.75″ ≥ 2″ not recorded

How Severe Was It? The NWS Yardstick, Applied to Longmont's Reports

The National Weather Service calls hail severe at 1″ (quarter size) and significant at 2″ (hen-egg size). Scoring the 2 Longmont-area reports (filed in Boulder, Weld Counties) against that scale: 2 of them met the severe 1″+ criterion — the size at which asphalt shingles start taking granule loss and bruising that shows up as leaks a season later. Damage at these sizes is rarely visible from the ground but is typically covered by homeowners insurance when documented promptly.

What to Do If Your Roof Was in the Hail Path

1. Stay off the roof and read your yard instead. Granule piles at the downspouts, dings in gutters and window screens, shredded leaves — after the August 22, 2026 activity near Longmont, those ground-level proxies tell you whether the roof took a hit.
2. Build the paper trail before anyone touches anything. Dated photos of the damage, a hailstone next to a coin if one is still around, and this NOAA log tying the loss to a specific Longmont storm day are what the adjuster will ask for.
3. Expect door-knockers — and slow down. In a hail market like Longmont, out-of-town crews canvass neighborhoods within days of an event. Do not sign a contract or an Assignment of Benefits on the doorstep; get a written inspection scope from a roofer you chose first.
4. File on your policy's clock, not the salesman's. Sudden storm damage is generally covered for Colorado homeowners, and your filing window comes from the policy itself. File promptly while the dates above are fresh, but on your terms.
5. Have your contractor at the adjuster meeting. A written scope keeps the estimate honest. Step-by-step: the roof insurance claim guide.

Hail History in Longmont — the 10-Year Picture

The county behind Longmont has logged 115 hail events over the last decade — a pace of roughly 12 per year — with the most severe stone measured at 3.00″. Against that 10-year baseline, the 2 hail days in this 90-day window run below the long-term average rate. Longmont averages 7 hail-producing storms per year — check hail risk lookup for your address.

Longmont's county logged fewer hail events than the Colorado median (130 per county over 10 years), placing it on the lower end of the state's hail exposure spectrum — though individual storm cells can still produce damaging hail regardless of the long-term average.

Longmont's County, Year by Year (NOAA Archive)

NOAA Storm Events archive, Longmont's county. Years with no row logged no hail events.

2018 was the county's standout hail year on both counts: the most recorded events (45) and the largest stone (3.00″). Roofs installed before that season have already survived the local worst case — or absorbed damage that was never inspected.

Hail in Longmont — Questions Homeowners Ask

Check Your Own ZIP in Longmont

The county-level history above averages over the whole area. For a score tied to your address, run your ZIP through the hail risk lookup — Longmont ZIP codes include 80514, 80501, 80503, 80502, 80504.

Longmont Neighborhoods — Hail Exposure Varies by Area

Hail paths track with storm cell movement, not city limits. If you're in East Longmont, Southlands, Longmont Crossing, Prairie View or Westridge, check your specific street against the report locations above — distance from Longmont's center is listed for each report.

More Resources

Roofing contractors in Longmont · Storm damage repair in Longmont · Insurance claim guide · Roof replacement costs in Longmont · Emergency roof repair