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.

Woodbury County · Iowa · NOAA radar record 2016–2025

Hail damage in Sioux City, IA

Radar has detected hail over Sioux City on 247 separate days since 2016. On 64 of them the largest stone was estimated at golf-ball size or bigger. The biggest was 10.2 cm on June 2, 2025.

69/100 RoofTake Score — High hail exposure · ranked 35 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		47 / 100× 0.3516.5
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× 0.2018.1
Concentration
Hail days per year reaching golf-ball size		32 / 100× 0.154.8
RoofTake Score69

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.

247hail days on radar since 2016
64at golf-ball size (1.75 in) or larger
10.2 cmlargest stone estimated, June 2, 2025
24.7hail days per year, average

Where the Missouri valley hail track crosses three states at once.

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 Sioux City since 2016

DateRadar max sizeMetric ComparisonSignatures
June 18, 20164.00 in10.2 cmGrapefruit79
June 29, 20174.00 in10.2 cmGrapefruit156
May 21, 20244.00 in10.2 cmGrapefruit59
June 12, 20244.00 in10.2 cmGrapefruit63
June 2, 20254.00 in10.2 cmGrapefruit27
June 22, 20213.75 in9.5 cmTeacup36
April 16, 20173.50 in8.9 cmTeacup39
August 27, 20183.50 in8.9 cmTeacup12
August 14, 20203.25 in8.3 cmTeacup95
June 16, 20253.25 in8.3 cmTeacup60

"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

201626
201730
201825
201930
202023
202117
202218
202327
202421
202530

Busiest year in the record: 2017 with 30 hail days.

Hail days by month

Mar5
Apr24
May26
Jun54
Jul54
Aug45
Sep28
Oct10
Dec1

Peak month: June. Hail season in Iowa 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 Sioux City

  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 Sioux City radar record and the NOAA citation into your notice of claim.

Every hail day radar recorded near Sioux City

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

  1. September 23, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    3 radar signatures · closest signature 22.91 mi from the centroid · hail probability 100%, severe 60%
  2. September 17, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    10 radar signatures · closest signature 5.5 mi from the centroid · hail probability 100%, severe 70%
  3. September 16, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    11 radar signatures · closest signature 20.24 mi from the centroid · hail probability 100%, severe 50%
  4. August 18, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    2 radar signatures · closest signature 18.62 mi from the centroid · hail probability 100%, severe 40%
  5. August 15, 2025
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    34 radar signatures · closest signature 12.06 mi from the centroid · hail probability 100%, severe 40%
  6. August 9, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    24 radar signatures · closest signature 14.46 mi from the centroid · hail probability 100%, severe 50%
  7. August 6, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    6 radar signatures · closest signature 5.05 mi from the centroid · hail probability 100%, severe 30%
  8. July 30, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    111 radar signatures · closest signature 3.22 mi from the centroid · hail probability 100%, severe 70%
  9. July 28, 2025
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    39 radar signatures · closest signature 5.36 mi from the centroid · hail probability 100%, severe 80%
  10. July 24, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    40 radar signatures · closest signature 13.4 mi from the centroid · hail probability 100%, severe 60%
  11. July 23, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    50 radar signatures · closest signature 9.97 mi from the centroid · hail probability 100%, severe 60%
  12. July 20, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    5 radar signatures · closest signature 14.47 mi from the centroid · hail probability 100%, severe 60%
  13. July 16, 2025
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 14.85 mi from the centroid · hail probability 100%, severe 40%
  14. July 12, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    17 radar signatures · closest signature 14.08 mi from the centroid · hail probability 100%, severe 70%
  15. July 10, 2025
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    40 radar signatures · closest signature 5.26 mi from the centroid · hail probability 100%, severe 90%
  16. July 8, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    48 radar signatures · closest signature 2.54 mi from the centroid · hail probability 100%, severe 50%
  17. July 7, 2025
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    4 radar signatures · closest signature 22.06 mi from the centroid · hail probability 100%, severe 70%
  18. June 29, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    15 radar signatures · closest signature 15.27 mi from the centroid · hail probability 100%, severe 50%
  19. June 17, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    8 radar signatures · closest signature 20.22 mi from the centroid · hail probability 100%, severe 80%
  20. June 16, 2025
    3.25 in (8.3 cm) — Teacup size, radar-estimated
    60 radar signatures · closest signature 4.05 mi from the centroid · hail probability 100%, severe 100%
  21. June 15, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    10 radar signatures · closest signature 10.42 mi from the centroid · hail probability 100%, severe 50%
  22. June 14, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    23 radar signatures · closest signature 15.16 mi from the centroid · hail probability 100%, severe 80%
  23. June 11, 2025
    2.25 in (5.7 cm) — Hen egg size, radar-estimated
    23 radar signatures · closest signature 9.3 mi from the centroid · hail probability 100%, severe 90%
  24. June 3, 2025
    2.25 in (5.7 cm) — Hen egg size, radar-estimated
    16 radar signatures · closest signature 16.11 mi from the centroid · hail probability 100%, severe 90%
  25. June 2, 2025
    4.00 in (10.2 cm) — Grapefruit size, radar-estimated
    27 radar signatures · closest signature 18.07 mi from the centroid · hail probability 100%, severe 100%
  26. April 29, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    6 radar signatures · closest signature 14.63 mi from the centroid · hail probability 100%, severe 80%
  27. April 28, 2025
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    12 radar signatures · closest signature 11.04 mi from the centroid · hail probability 100%, severe 70%
  28. April 23, 2025
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    31 radar signatures · closest signature 17.84 mi from the centroid · hail probability 100%, severe 100%
  29. April 18, 2025
    2.50 in (6.3 cm) — Tennis ball size, radar-estimated
    147 radar signatures · closest signature 3.88 mi from the centroid · hail probability 100%, severe 100%
  30. April 2, 2025
    0.50 in (1.3 cm) — Marble size, radar-estimated
    2 radar signatures · closest signature 18.25 mi from the centroid · hail probability 100%, severe 60%
  31. August 29, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    17 radar signatures · closest signature 5.58 mi from the centroid · hail probability 100%, severe 60%
  32. July 30, 2024
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    13 radar signatures · closest signature 11.69 mi from the centroid · hail probability 100%, severe 30%
  33. July 29, 2024
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    16 radar signatures · closest signature 18.26 mi from the centroid · hail probability 100%, severe 70%
  34. July 28, 2024
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    12 radar signatures · closest signature 14.75 mi from the centroid · hail probability 100%, severe 40%
  35. July 7, 2024
    2.25 in (5.7 cm) — Hen egg size, radar-estimated
    37 radar signatures · closest signature 6.92 mi from the centroid · hail probability 100%, severe 100%
  36. July 2, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    11 radar signatures · closest signature 16.64 mi from the centroid · hail probability 100%, severe 40%
  37. June 26, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    11 radar signatures · closest signature 13.9 mi from the centroid · hail probability 100%, severe 40%
  38. June 18, 2024
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    72 radar signatures · closest signature 3.01 mi from the centroid · hail probability 100%, severe 80%
  39. June 17, 2024
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    26 radar signatures · closest signature 14.0 mi from the centroid · hail probability 100%, severe 60%
  40. June 16, 2024
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    15 radar signatures · closest signature 17.6 mi from the centroid · hail probability 100%, severe 40%
  41. June 12, 2024
    4.00 in (10.2 cm) — Grapefruit size, radar-estimated
    63 radar signatures · closest signature 4.5 mi from the centroid · hail probability 100%, severe 100%
  42. June 3, 2024
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    7 radar signatures · closest signature 2.6 mi from the centroid · hail probability 100%, severe 40%
  43. May 24, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    37 radar signatures · closest signature 4.25 mi from the centroid · hail probability 100%, severe 70%
  44. May 21, 2024
    4.00 in (10.2 cm) — Grapefruit size, radar-estimated
    59 radar signatures · closest signature 9.58 mi from the centroid · hail probability 100%, severe 100%
  45. May 9, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    1 radar signature · closest signature 17.77 mi from the centroid · hail probability 100%, severe 50%
  46. May 8, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 14.34 mi from the centroid · hail probability 100%, severe 60%
  47. April 30, 2024
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    3 radar signatures · closest signature 23.21 mi from the centroid · hail probability 100%, severe 80%
  48. April 26, 2024
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 5.05 mi from the centroid · hail probability 100%, severe 20%
  49. April 16, 2024
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    67 radar signatures · closest signature 4.05 mi from the centroid · hail probability 100%, severe 90%
  50. April 7, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    3 radar signatures · closest signature 16.57 mi from the centroid · hail probability 100%, severe 60%
  51. April 6, 2024
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 22.18 mi from the centroid · hail probability 100%, severe 50%
  52. September 30, 2023
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    7 radar signatures · closest signature 14.14 mi from the centroid · hail probability 100%, severe 40%
  53. September 29, 2023
    0.75 in (1.9 cm) — Penny size, radar-estimated
    6 radar signatures · closest signature 13.9 mi from the centroid · hail probability 100%, severe 30%
  54. September 23, 2023
    1.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
    7 radar signatures · closest signature 4.8 mi from the centroid · hail probability 100%, severe 60%
  55. September 21, 2023
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 12.33 mi from the centroid · hail probability 100%, severe 30%
  56. September 19, 2023
    2.50 in (6.3 cm) — Tennis ball size, radar-estimated
    92 radar signatures · closest signature 8.89 mi from the centroid · hail probability 100%, severe 100%
  57. September 16, 2023
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    3 radar signatures · closest signature 20.4 mi from the centroid · hail probability 100%, severe 60%
  58. August 9, 2023
    0.75 in (1.9 cm) — Penny size, radar-estimated
    2 radar signatures · closest signature 17.63 mi from the centroid · hail probability 100%, severe 30%
  59. August 6, 2023
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    19 radar signatures · closest signature 11.65 mi from the centroid · hail probability 100%, severe 40%
  60. August 5, 2023
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    8 radar signatures · closest signature 22.41 mi from the centroid · hail probability 100%, severe 50%

Showing the 60 most recent of 247. The full record is in the JSON we publish: sioux-city-ia.json.

From people in Sioux City

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 Sioux City 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 Sioux City 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 Sioux City storms

No photos yet for Sioux City. 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 Sioux City, IA: common questions

How often does Sioux City get damaging hail?

Radar recorded 247 hail days within 25 miles of the city centre between 2016 and 2025 — an average of 24.7 a year, of which 6.4 a year were at golf-ball size or larger. Not every one of those damages roofs.

When is hail season in Sioux City?

The busiest month in this record is June, and 2017 was the busiest single year with 30 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 Sioux City

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