Adams County, Colorado: hail history 2014–2026
The National Weather Service logged 170 hail reports in Adams County between January 2014 and June 2026. On 41 days the largest stone was an inch or bigger, the size NWS calls severe. The biggest was 2.75 inches, about the size of a baseball, reported on June 18, 2018 near Brighton. May is the peak month (39% of reports).
- 170hail reports, 2014–2026
- 41days with hail of 1 in or more
- 17days with hail of 1.75 in or more (golf ball)
- 2.75 inlargest stone reported
Has severe hail hit Adams County since my roof was put on?
Our record covers 2014–2026 only. A roof older than 2014 has also been through hail we do not show here. A day counts when at least one report of 1 inch or larger was filed in the county, so it does not mean your own roof was hit; an inspection is the only way to know.
Year by year
| Year | Reports | Days 1 in+ | Days 1.75 in+ | Largest |
|---|---|---|---|---|
| 2014 | 10 | 4 | 1 | 1.75 in |
| 2015 | 6 | 3 | 2 | 2.5 in |
| 2016 | 8 | 2 | 1 | 2.5 in |
| 2017 | 6 | 1 | 0 | 1 in |
| 2018 | 18 | 5 | 3 | 2.75 in |
| 2019 | 12 | 6 | 1 | 1.75 in |
| 2020 | 6 | 2 | 1 | 2 in |
| 2021 | 16 | 6 | 2 | 1.75 in |
| 2023 | 34 | 7 | 3 | 2.75 in |
| 2024 | 29 | 1 | 1 | 2 in |
| 2025 | 12 | 1 | 0 | 1.5 in |
| 2026 (Jan–Jun) | 13 | 3 | 2 | 2 in |
When hail hits: reports by month
| Jan | 0 |
|---|---|
| Feb | 0 |
| Mar | 0 |
| Apr | 1 |
| May | 67 |
| Jun | 62 |
| Jul | 19 |
| Aug | 21 |
| Sep | 0 |
| Oct | 0 |
| Nov | 0 |
| Dec | 0 |
May alone has 39% of the 170 reports. Book an inspection before the first month with reports so crews still have dates.
Where hail of 1 inch or more was reported in Adams County
- 1 to 1.74 in
- 1.75 to 2.74 in (golf ball to tennis ball)
- 2.75 in and up (baseball)
145 reports of 1 inch or larger have coordinates; the map shows the 140 largest. Each dot is a place a spotter, a trained observer or the public reported hail, not a measured storm path.
Sources: NOAA Storm Events (report locations) · US Census cartographic boundary (county outline, public domain)The ten biggest hail days
| Date | Largest hail | Reports | Where |
|---|---|---|---|
| June 18, 2018 | 2.75 in, a baseball | 9 | Brighton |
| May 10, 2023 | 2.75 in, a baseball | 8 | Strasburg |
| July 29, 2018 | 2.5 in, a tennis ball | 5 | Strasburg |
| June 25, 2015 | 2.5 in, a tennis ball | 4 | Barr Lake |
| May 7, 2016 | 2.5 in, a tennis ball | 3 | Strasburg |
| May 30, 2024 | 2 in, a hen egg | 23 | Aurora |
| June 29, 2023 | 2 in, a hen egg | 10 | Bennett |
| June 1, 2026 | 2 in, a hen egg | 7 | Bennett |
| July 9, 2020 | 2 in, a hen egg | 5 | Watkins |
| August 6, 2018 | 2 in, a hen egg | 1 | Leader |
“The storms that moved across northern Washington County caused severe agricultural damage. Wheat fields were significantly damaged and the young corn was stripped of all its leaves.”
National Weather Service report, June 18, 2018
“The storms produced extensive hail, ranging from quarter to tennis ball size. As the storms move northeast onto the plains, the hail increase in size from baseball to softball size. In addition, the storm produced several tornadoes as they move across Morgan and Washington counties.”
National Weather Service report, May 10, 2023
“Severe thunderstorms brought damaging tornadoes, straight-line winds, large hail and heavy rain across northeast Colorado. A total of 4 tornadoes touched down and impacted the communities of Brush, Hillrose, and Snyder.”
National Weather Service report, July 29, 2018
Tornadoes in Adams County
NOAA lists 33 tornadoes in the county in 2014–2026; the 8 strongest are below. Tornadoes tear off whole roof sections, which is a different repair from hail bruising.
| Date | Rating | Path length | Width | Near |
|---|---|---|---|---|
| May 18, 2025 | EF2 | 4.44 mi | 400 yd | Bennett |
| July 27, 2018 | EF1 | 1.97 mi | 50 yd | Strasburg |
| June 21, 2014 | EF1 | 0.25 mi | 100 yd | Barr Lake |
| May 15, 2015 | EF1 | 0.1 mi | 100 yd | Strasburg |
| July 27, 2018 | EF0 | 1.85 mi | 50 yd | Shamrock |
| May 29, 2024 | EF0 | 0.73 mi | 50 yd | Leader |
| May 29, 2024 | EF0 | 0.3 mi | 30 yd | Leader |
| June 4, 2014 | EF0 | 0.1 mi | 50 yd | Bennett |
Strongest thunderstorm gusts
| Date | Gust | Near |
|---|---|---|
| September 29, 2014 | 81 mph | Manila |
| June 13, 2016 | 81 mph | Manila |
| May 24, 2016 | 78 mph | Leader |
| June 6, 2020 | 78 mph | Barr Lake |
| June 6, 2020 | 75 mph | Brighton |
| June 6, 2020 | 71 mph | Shamrock |
Gust speeds are measured or estimated; reports in knots are converted to mph.
What to do with this
- Find the year your roof went on (closing papers, permit, a past invoice). Use the box above to see how many severe hail days it has lived through.
- After any day on the table, photograph the roof and keep the date: insurers ask for it.
- Get a free inspection from a local roofer: Westminster.
Adams County cities we cover
Other Colorado counties
- Weld County (480 reports)
- Larimer County (201 reports)
- Jefferson County (209 reports)
- Pueblo County (182 reports)
- Denver County (168 reports)
All counties: hail history hub · live hail map. Data: NOAA Storm Events Database, 2014–2026, county level, public domain. The 2026 row is partial: NOAA's file ran to June 2026 when we loaded it on 2026-10-06. Reports are filed by spotters, trained observers and the public; one storm can produce many reports. Not a forecast, not legal advice.