Douglas County was hit as recently as 2026-07-28, 3 days ago. Douglas County is hit in most years, and usually several times over. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2019-06-08 near Castle Rock.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Colorado. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-28, around Castle Rock. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Douglas County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
Get free access Check an addressOur US-based call center calls the homeowners in this storm and books roof inspections straight onto your calendar. You work the storm; we fill the schedule. We dial -- you do not have to knock a single door.
See call-center options ->NOAA's Storm Prediction Center has logged 82 separate hail days here since 2010 -- 4.8 a year over 17 years of record. Those days carry 187 separate reports between them, two or three on a typical one. No year since 2010 has gone by without at least one. The busiest single year was 2023, with 9 hail days. The last five years track the long-run rate, with 20 days since 2022.
Most hail here stays under 2 inches: only 6 of the 82 days on record passed it, 7%, the last on 2019-07-04. They land in the same month as everything else, June. Golf-ball size is rarer still: 1.75 inches or more on 14 of the 82 days.
Across the whole of Colorado, see the Colorado hail map and history.
Reports cluster nearest Parker -- 26 of the county's 82 hail days -- then Castle Rock (19), Highlands Ranch (17), Franktown (11) and The Pinery (11). Beyond those, NOAA names Castlewood Canyon, Greenland, Larkspur, Castle Pines, Ponderosa Park, Chatfield Reservo, Roxborough Park, Perry Park and Chatfield Reservoi on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Highlands Ranch | 9 | 1.75″ |
| Parker | 6 | 1.50″ |
| Castle Rock | 5 | 1.25″ |
| Franktown | 4 | 1.50″ |
| 2 E Castle Rock | 3 | 2.00″ |
The season runs June through August: 66 of the 82 hail days on record fall in those 3 months (80%). June is the single busiest month, with 36 of them (44%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in April, May and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 2 |
| May | 10 |
| June | 36 |
| July | 16 |
| August | 14 |
| September | 4 |
That day put 1 report on the map, the biggest 1 inch near Castle Rock. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-28 | 1.00″ | 1 |
| 2026-06-08 | 1.50″ | 4 |
| 2026-06-03 | 1.00″ | 1 |
| 2026-06-01 | 1.50″ | 2 |
| 2025-06-24 | 1.00″ | 1 |
| 2024-08-10 | 1.00″ | 1 |
| 2024-06-14 | 1.00″ | 2 |
| 2024-06-09 | 1.75″ | 2 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.5 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Arapahoe County (82 hail days), Denver County (36) and Jefferson County (51). Douglas County sits in between.
Arapahoe County · Denver County · Jefferson County
Back to the Colorado hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Douglas County, Colorado only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.