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.
Laramie County · Wyoming · NOAA radar record 2016–2025
Hail damage in Cheyenne, WY
Radar has detected hail over Cheyenne on 342 separate days since 2016. On 127 of them the largest stone was estimated at golf-ball size or bigger. The biggest was 10.2 cm on June 2, 2025.
A very high value in this historical exposure model. This is not a national percentile or a diagnosis of your roof; the component values explain the result.
How we got to that number
| Component | Value | Weight | Contribution |
|---|---|---|---|
| Frequency Hail days per year at 1.00 in (2.5 cm) or larger | 67 / 100 | × 0.35 | 23.5 |
| Severity Largest stone radar estimated in the whole window | 100 / 100 | × 0.30 | 30.0 |
| Recency How long since the last 2 in (5 cm) day | 91 / 100 | × 0.20 | 18.3 |
| Concentration Hail days per year reaching golf-ball size | 64 / 100 | × 0.15 | 9.5 |
| RoofTake Score | 81 | ||
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.
The highest hail-day frequency per capita of any state capital.
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 Cheyenne since 2016
| Date | Radar max size | Metric | Comparison | Signatures |
|---|---|---|---|---|
| July 17, 2016 | 4.00 in | 10.2 cm | Grapefruit | 44 |
| August 11, 2019 | 4.00 in | 10.2 cm | Grapefruit | 71 |
| July 20, 2020 | 4.00 in | 10.2 cm | Grapefruit | 97 |
| July 22, 2020 | 4.00 in | 10.2 cm | Grapefruit | 93 |
| August 1, 2023 | 4.00 in | 10.2 cm | Grapefruit | 39 |
| June 2, 2025 | 4.00 in | 10.2 cm | Grapefruit | 39 |
| July 29, 2018 | 3.75 in | 9.5 cm | Teacup | 50 |
| July 5, 2019 | 3.75 in | 9.5 cm | Teacup | 19 |
| September 1, 2019 | 3.75 in | 9.5 cm | Teacup | 8 |
| June 26, 2020 | 3.75 in | 9.5 cm | Teacup | 46 |
"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
Busiest year in the record: 2023 with 50 hail days.
Hail days by month
Peak month: July. Hail season in Wyoming 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 Cheyenne
- 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.
- 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.
- Look, before you file. Nine photographs, none of them requiring you to get on the roof.
- Check the arithmetic. If the actual cash value of the damage is under your deductible, filing pays nothing — work it out first.
- Then write. The letter generator puts the Cheyenne radar record and the NOAA citation into your notice of claim.
Every hail day radar recorded near Cheyenne
342 days, most recent first. Sizes are radar estimates of the largest stone aloft in the cell, not measurements at any address.
- October 16, 20250.75 in (1.9 cm) — Penny size, radar-estimated
- October 4, 20250.75 in (1.9 cm) — Penny size, radar-estimated
- September 11, 20251.75 in (4.4 cm) — Golf ball size, radar-estimated
- August 29, 20251.75 in (4.4 cm) — Golf ball size, radar-estimated
- August 22, 20250.50 in (1.3 cm) — Marble size, radar-estimated
- August 18, 20250.50 in (1.3 cm) — Marble size, radar-estimated
- August 15, 20251.00 in (2.5 cm) — Quarter size, radar-estimated
- August 10, 20252.00 in (5.1 cm) — Hen egg size, radar-estimated
- August 9, 20251.00 in (2.5 cm) — Quarter size, radar-estimated
- August 2, 20252.50 in (6.3 cm) — Tennis ball size, radar-estimated
- August 1, 20253.25 in (8.3 cm) — Teacup size, radar-estimated
- July 31, 20252.75 in (7.0 cm) — Baseball size, radar-estimated
- July 30, 20250.50 in (1.3 cm) — Marble size, radar-estimated
- July 29, 20251.00 in (2.5 cm) — Quarter size, radar-estimated
- July 26, 20250.50 in (1.3 cm) — Marble size, radar-estimated
- July 25, 20251.00 in (2.5 cm) — Quarter size, radar-estimated
- July 24, 20253.00 in (7.6 cm) — Teacup size, radar-estimated
- July 23, 20251.25 in (3.2 cm) — Half dollar size, radar-estimated
- July 16, 20251.00 in (2.5 cm) — Quarter size, radar-estimated
- July 14, 20253.00 in (7.6 cm) — Teacup size, radar-estimated
- July 12, 20252.50 in (6.3 cm) — Tennis ball size, radar-estimated
- July 11, 20253.50 in (8.9 cm) — Teacup size, radar-estimated
- July 10, 20251.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
- July 8, 20250.75 in (1.9 cm) — Penny size, radar-estimated
- July 6, 20251.25 in (3.2 cm) — Half dollar size, radar-estimated
- June 29, 20253.50 in (8.9 cm) — Teacup size, radar-estimated
- June 25, 20253.00 in (7.6 cm) — Teacup size, radar-estimated
- June 22, 20250.75 in (1.9 cm) — Penny size, radar-estimated
- June 17, 20251.75 in (4.4 cm) — Golf ball size, radar-estimated
- June 16, 20250.75 in (1.9 cm) — Penny size, radar-estimated
- June 14, 20251.00 in (2.5 cm) — Quarter size, radar-estimated
- June 13, 20251.25 in (3.2 cm) — Half dollar size, radar-estimated
- June 12, 20252.00 in (5.1 cm) — Hen egg size, radar-estimated
- June 11, 20251.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
- June 2, 20254.00 in (10.2 cm) — Grapefruit size, radar-estimated
- June 1, 20251.75 in (4.4 cm) — Golf ball size, radar-estimated
- May 27, 20251.75 in (4.4 cm) — Golf ball size, radar-estimated
- May 26, 20251.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
- May 23, 20251.25 in (3.2 cm) — Half dollar size, radar-estimated
- May 18, 20251.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
- September 15, 20240.75 in (1.9 cm) — Penny size, radar-estimated
- September 8, 20240.50 in (1.3 cm) — Marble size, radar-estimated
- September 4, 20240.50 in (1.3 cm) — Marble size, radar-estimated
- August 22, 20241.75 in (4.4 cm) — Golf ball size, radar-estimated
- August 21, 20241.25 in (3.2 cm) — Half dollar size, radar-estimated
- August 19, 20240.50 in (1.3 cm) — Marble size, radar-estimated
- August 13, 20241.25 in (3.2 cm) — Half dollar size, radar-estimated
- August 12, 20242.00 in (5.1 cm) — Hen egg size, radar-estimated
- August 10, 20241.00 in (2.5 cm) — Quarter size, radar-estimated
- August 7, 20243.00 in (7.6 cm) — Teacup size, radar-estimated
- August 6, 20241.00 in (2.5 cm) — Quarter size, radar-estimated
- August 2, 20241.25 in (3.2 cm) — Half dollar size, radar-estimated
- July 27, 20241.00 in (2.5 cm) — Quarter size, radar-estimated
- July 21, 20241.50 in (3.8 cm) — Ping-pong ball size, radar-estimated
- July 20, 20242.75 in (7.0 cm) — Baseball size, radar-estimated
- July 17, 20241.75 in (4.4 cm) — Golf ball size, radar-estimated
- July 1, 20242.50 in (6.3 cm) — Tennis ball size, radar-estimated
- June 30, 20241.75 in (4.4 cm) — Golf ball size, radar-estimated
- June 21, 20243.50 in (8.9 cm) — Teacup size, radar-estimated
- June 20, 20242.00 in (5.1 cm) — Hen egg size, radar-estimated
Showing the 60 most recent of 342. The full record is in the JSON we publish: cheyenne-wy.json.
From people in Cheyenne
The part of this page that no dataset can produce. Everything here is read by a human before it appears.
Neighbourhood reports
Claim outcomes
Damage photos from Cheyenne storms
Hail in Cheyenne, WY: common questions
How often does Cheyenne get damaging hail?
Radar recorded 342 hail days within 25 miles of the city centre between 2016 and 2025 — an average of 34.2 a year, of which 12.7 a year were at golf-ball size or larger. Not every one of those damages roofs.
When is hail season in Cheyenne?
The busiest month in this record is July, and 2023 was the busiest single year with 50 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.
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