Guide · Weather

Colorado hail season

The Front Range sits inside "Hail Alley," the corridor stretching from Colorado through Wyoming and Nebraska that sees more large-hail days than anywhere else in North America. Here is when it hits, why some towns get it worse than others, and real recorded events — not marketing copy from a roofing company.

Last verified 29 August 2026

The short version

Hail season runs May through August, with the peak in late May and June.
Denver metro and the Palmer Divide (Castle Rock, Castle Pines, Franktown, Parker) sit in one of the highest hail-frequency zones in the country.
A single severe storm can hit several suburbs in one pass — hail damage is rarely a one-house event.
The information below is sourced to NOAA's National Weather Service Boulder office and NOAA's Storm Events Database, not a contractor's own storm-tracking page.

Why the Front Range gets hit so hard

Colorado's Front Range sits at the boundary where warm, moist air from the plains meets cooler air dropping off the Rockies. That collision, combined with strong upper-level winds common in early summer, produces the supercell thunderstorms that generate large hail. The Palmer Divide — the high ridge running roughly from Castle Rock to Elbert County — adds elevation-driven lift that makes storms there especially prone to hail, which is why Douglas County communities report some of the highest hail frequency in the metro.

Recorded events (NWS Boulder)

The National Weather Service's Boulder forecast office keeps public summaries of significant severe-weather events across its Colorado coverage area. Examples from recent years:

May 30, 2024 — Denver hailstorm, documented in NWS Boulder's annual severe weather summary.
June 22, 2023 — Douglas County tornado, part of the same severe weather pattern common to hail-producing supercells on the Palmer Divide.
May 18, 2025 — Eastern Colorado tornado outbreak (three EF-2s), an example of how the same storm systems that spawn tornadoes on the plains also produce hail across the Front Range on their way through.

For a specific address, NOAA's Storm Events Database (ncei.noaa.gov/stormevents) and NWS Boulder's event summaries (weather.gov/bou/events) are the primary public sources — both are free to search by county and date.

What to do if hail just hit your area

Photograph the roof, gutters, vents and AC unit before anyone touches them — that's the evidence your insurer needs.
Check your deductible before you file. Many Colorado policies now carry a separate, percentage-based wind/hail deductible — here's how that works.
Watch for door-to-door crews right after a storm. Colorado law gives you 72 hours to cancel a signed contract and bans any roofer from paying or waiving your deductible — your rights under SB 38.
Get an inspection from a company, not just the insurer's adjuster, and ask directly whether the damage is worth filing a claim over.

Sources. NOAA National Weather Service Boulder, CO forecast office event summaries (weather.gov/bou/events); NOAA Storm Events Database (ncei.noaa.gov/stormevents).

This page describes regional weather patterns and cites publicly available NOAA/NWS records. It does not track live storms or claim any specific property was affected — check the NOAA sources directly for a specific address and date.

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