RoofTake

Historical hail archive: January 2016–December 2025. NOAA radar estimates within 25 miles of each city centre. ZIP matches use the first three digits; this is not a property-level report or a live alert service. Coverage and source.

Denver County · Colorado · NOAA radar record 2016–2025

Hail damage in Denver, CO

Radar has detected hail over Denver on 367 separate days since 2016. On 77 of them the largest stone was estimated at golf-ball size or bigger. The biggest was 10.2 cm on May 31, 2024.

73/100 RoofTake Score — High hail exposure · ranked 32 of 50 metros we cover

A high value in this historical exposure model. Radar estimates do not establish what reached a property or whether it was damaged.

How we got to that number
ComponentValueWeightContribution
Frequency
Hail days per year at 1.00 in (2.5 cm) or larger		53 / 100× 0.3518.6
Severity
Largest stone radar estimated in the whole window		100 / 100× 0.3030.0
Recency
How long since the last 2 in (5 cm) day		91 / 100× 0.2018.3
Concentration
Hail days per year reaching golf-ball size		38 / 100× 0.155.8
RoofTake Score73

The score describes an area, not a house. Two roofs on the same street of different ages face very different risk from the identical storm. The whole formula and its weights are on the methodology page, and you can recompute it yourself from our public data.

367hail days on radar since 2016
77at golf-ball size (1.75 in) or larger
10.2 cmlargest stone estimated, May 31, 2024
36.7hail days per year, average

Front Range hail season runs April to September and peaks hard in June.

Check your own ZIP code Is your roof damaged?

Data last refreshed: · source: NOAA NCEI Severe Weather Data Inventory, dataset nx3hail

The ten biggest hail days in Denver since 2016

DateRadar max sizeMetric ComparisonSignatures
June 19, 20184.00 in10.2 cmGrapefruit304
July 26, 20184.00 in10.2 cmGrapefruit47
June 29, 20234.00 in10.2 cmGrapefruit142
May 31, 20244.00 in10.2 cmGrapefruit186
May 10, 20233.75 in9.5 cmTeacup202
June 22, 20233.75 in9.5 cmTeacup465
August 14, 20193.50 in8.9 cmTeacup19
July 10, 20203.50 in8.9 cmTeacup60
May 8, 20173.25 in8.3 cmTeacup121
July 6, 20193.25 in8.3 cmTeacup132

"Signatures" is the number of separate radar volume scans that detected hail in a storm cell within 25 miles that day. More signatures means a longer-lived or larger storm, not necessarily bigger stones.

Hail days by year

201645
201726
201839
201952
202022
202129
202224
202350
202430
202550

Busiest year in the record: 2019 with 52 hail days.

Hail days by month

Mar1
Apr12
May73
Jun93
Jul102
Aug58
Sep26
Oct2

Peak month: July. Hail season in Colorado is short and it is not distributed evenly — most of the annual risk arrives in a few weeks.

What to do with this if you own a roof in Denver

  1. Find your dates. Look up your ZIP for the record nearest you, and note every day at 1.00 in or above since you bought the house.
  2. Work out whether your roof could have survived them. A twelve-year-old asphalt roof and a two-year-old one respond very differently to the same stone — the age calculator explains why.
  3. Look, before you file. Nine photographs, none of them requiring you to get on the roof.
  4. Check the arithmetic. If the actual cash value of the damage is under your deductible, filing pays nothing — work it out first.
  5. Then write. The letter generator puts the Denver radar record and the NOAA citation into your notice of claim.

Every hail day radar recorded near Denver

367 days, most recent first. Sizes are radar estimates of the largest stone aloft in the cell, not measurements at any address.

  1. October 27, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    5 radar signatures · closest signature 17.88 mi from the centroid · hail probability 100%, severe 100%
  2. September 29, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    2 radar signatures · closest signature 10.78 mi from the centroid · hail probability 100%, severe 20%
  3. September 18, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    14 radar signatures · closest signature 12.73 mi from the centroid · hail probability 100%, severe 90%
  4. September 17, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 23.76 mi from the centroid · hail probability 100%, severe 10%
  5. September 13, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    2 radar signatures · closest signature 23.09 mi from the centroid · hail probability 100%, severe 30%
  6. September 11, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    5 radar signatures · closest signature 14.44 mi from the centroid · hail probability 100%, severe 40%
  7. September 9, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    5 radar signatures · closest signature 20.29 mi from the centroid · hail probability 100%, severe 20%
  8. August 22, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    2 radar signatures · closest signature 23.92 mi from the centroid · hail probability 100%, severe 40%
  9. August 18, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    12 radar signatures · closest signature 17.85 mi from the centroid · hail probability 100%, severe 40%
  10. August 11, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    10 radar signatures · closest signature 12.8 mi from the centroid · hail probability 100%, severe 80%
  11. August 10, 2025
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    29 radar signatures · closest signature 11.62 mi from the centroid · hail probability 100%, severe 80%
  12. August 1, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    7 radar signatures · closest signature 19.04 mi from the centroid · hail probability 100%, severe 20%
  13. July 31, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    6 radar signatures · closest signature 24.0 mi from the centroid · hail probability 100%, severe 40%
  14. July 26, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 14.97 mi from the centroid · hail probability 100%, severe 10%
  15. July 25, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    20 radar signatures · closest signature 17.69 mi from the centroid · hail probability 100%, severe 20%
  16. July 24, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    17 radar signatures · closest signature 7.31 mi from the centroid · hail probability 100%, severe 60%
  17. July 23, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 18.03 mi from the centroid · hail probability 100%, severe 10%
  18. July 22, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    14 radar signatures · closest signature 16.19 mi from the centroid · hail probability 100%, severe 40%
  19. July 17, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    9 radar signatures · closest signature 8.1 mi from the centroid · hail probability 100%, severe 30%
  20. July 16, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    18 radar signatures · closest signature 19.24 mi from the centroid · hail probability 100%, severe 80%
  21. July 14, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    14 radar signatures · closest signature 10.47 mi from the centroid · hail probability 100%, severe 40%
  22. July 12, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    40 radar signatures · closest signature 15.66 mi from the centroid · hail probability 100%, severe 80%
  23. July 11, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 23.87 mi from the centroid · hail probability 100%, severe 50%
  24. July 10, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    20 radar signatures · closest signature 2.3 mi from the centroid · hail probability 100%, severe 50%
  25. July 7, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    59 radar signatures · closest signature 0.45 mi from the centroid · hail probability 100%, severe 80%
  26. July 6, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    19 radar signatures · closest signature 17.42 mi from the centroid · hail probability 100%, severe 60%
  27. July 5, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    22 radar signatures · closest signature 6.27 mi from the centroid · hail probability 100%, severe 70%
  28. June 29, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 15.85 mi from the centroid · hail probability 100%
  29. June 27, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 21.32 mi from the centroid · hail probability 100%
  30. June 26, 2025
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    22 radar signatures · closest signature 4.4 mi from the centroid · hail probability 100%, severe 90%
  31. June 24, 2025
    2.25 in (5.7 cm) — Hen egg size, radar-estimated
    35 radar signatures · closest signature 21.2 mi from the centroid · hail probability 100%, severe 80%
  32. June 17, 2025
    2.25 in (5.7 cm) — Hen egg size, radar-estimated
    188 radar signatures · closest signature 5.15 mi from the centroid · hail probability 100%, severe 100%
  33. June 13, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    6 radar signatures · closest signature 21.65 mi from the centroid · hail probability 100%, severe 10%
  34. June 12, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    46 radar signatures · closest signature 16.87 mi from the centroid · hail probability 100%, severe 50%
  35. June 11, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    17 radar signatures · closest signature 19.43 mi from the centroid · hail probability 100%, severe 40%
  36. June 4, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    2 radar signatures · closest signature 10.34 mi from the centroid · hail probability 100%, severe 30%
  37. June 1, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    45 radar signatures · closest signature 3.0 mi from the centroid · hail probability 100%, severe 70%
  38. May 31, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 24.88 mi from the centroid · hail probability 100%
  39. May 30, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    37 radar signatures · closest signature 10.14 mi from the centroid · hail probability 100%, severe 70%
  40. May 26, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    5 radar signatures · closest signature 20.09 mi from the centroid · hail probability 100%, severe 50%
  41. May 25, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    56 radar signatures · closest signature 6.0 mi from the centroid · hail probability 100%, severe 90%
  42. May 24, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    12 radar signatures · closest signature 17.29 mi from the centroid · hail probability 100%, severe 50%
  43. May 18, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    95 radar signatures · closest signature 2.49 mi from the centroid · hail probability 100%, severe 100%
  44. May 14, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    11 radar signatures · closest signature 7.19 mi from the centroid · hail probability 100%, severe 70%
  45. May 11, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    15 radar signatures · closest signature 9.83 mi from the centroid · hail probability 100%, severe 40%
  46. April 25, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    2 radar signatures · closest signature 17.64 mi from the centroid · hail probability 100%, severe 60%
  47. April 24, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    24 radar signatures · closest signature 21.63 mi from the centroid · hail probability 100%, severe 70%
  48. April 18, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 24.49 mi from the centroid · hail probability 100%
  49. April 2, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    15 radar signatures · closest signature 2.73 mi from the centroid · hail probability 100%, severe 90%
  50. March 29, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    5 radar signatures · closest signature 8.73 mi from the centroid · hail probability 100%, severe 70%
  51. September 5, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    1 radar signature · closest signature 24.95 mi from the centroid · hail probability 100%, severe 10%
  52. September 4, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    1 radar signature · closest signature 24.65 mi from the centroid · hail probability 100%, severe 50%
  53. August 19, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    1 radar signature · closest signature 23.22 mi from the centroid · hail probability 100%, severe 40%
  54. August 14, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    52 radar signatures · closest signature 9.75 mi from the centroid · hail probability 100%, severe 70%
  55. August 13, 2024
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    11 radar signatures · closest signature 23.04 mi from the centroid · hail probability 100%, severe 40%
  56. August 10, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    10 radar signatures · closest signature 18.22 mi from the centroid · hail probability 100%, severe 50%
  57. August 6, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    31 radar signatures · closest signature 10.53 mi from the centroid · hail probability 100%, severe 50%
  58. August 4, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    9 radar signatures · closest signature 22.66 mi from the centroid · hail probability 100%, severe 30%
  59. July 28, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    3 radar signatures · closest signature 15.96 mi from the centroid · hail probability 100%, severe 40%
  60. July 27, 2024
    0.50 in (1.3 cm) — Marble size, radar-estimated
    3 radar signatures · closest signature 20.9 mi from the centroid · hail probability 100%

Showing the 60 most recent of 367. The full record is in the JSON we publish: denver-co.json.

From people in Denver

The part of this page that no dataset can produce. Everything here is read by a human before it appears.

Neighbourhood reports

No reports for Denver yet. Be the first — it takes thirty seconds and it is the single most useful thing for the next person on this page.

No name, no email, no address. Structured fields only — why.

Claim outcomes

Nobody has shared a Denver claim outcome yet. Approved, denied, how long it took — anonymously. This is the number the industry never publishes.

Anonymous, and we do not ask which insurer — structured outcomes only, so nobody can be defamed and nobody can be identified.

Damage photos from Denver storms

No photos yet for Denver. Photos of real hail damage, tied to a real date and place, are the one thing on this subject the internet is genuinely short of.

By uploading you confirm the photo is yours and you are happy for it to appear on this page. Strip the location data first if you would rather not share it — we remove it on our side too. Terms.

Hail in Denver, CO: common questions

How often does Denver get damaging hail?

Radar recorded 367 hail days within 25 miles of the city centre between 2016 and 2025 — an average of 36.7 a year, of which 7.7 a year were at golf-ball size or larger. Not every one of those damages roofs.

When is hail season in Denver?

The busiest month in this record is July, and 2019 was the busiest single year with 52 hail days.

Does this mean my roof is damaged?

No. These are radar estimates of the largest stone aloft in a storm cell somewhere within 25 miles of the city centre. Whether anything landed on your street, and whether it damaged your particular roof, needs somebody to look.

How do I use this for an insurance claim?

A specific date with a public, citable source is what turns 'sometime last year' into a date of loss. Use the claim letter generator, which pulls the date and the NOAA citation in for you.

Why 25 miles?

It is wide enough to catch storms that clipped the metro and narrow enough that the number still means something for a house inside it. The same radius is used for every metro so the pages are comparable.

Get quotes from roofers who work in Denver

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