Weston County was hit as recently as 2026-07-07, 24 days ago. Weston County is hit in most years, and usually several times over. The largest stone on record here is 3 inches, a teacup and 3 times the National Weather Service's 1 inch severe criterion, reported on 2011-07-05 near Rochelle.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Wyoming. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-07, around Upton. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Weston 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 91 separate hail days here since 2010 -- 5.4 a year over 17 years of record. Those days carry 168 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 2019, with 13 hail days. The last five years have been quieter than the long run: 18 days since 2022, against 6.1 a year before that.
12 of the 91 days reached 2 inches or more -- 13%, or about one hail day in 8, the last on 2026-07-03. They land in the same month as everything else, July. 25 of the 91 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Wyoming, see the Wyoming hail map and history.
Reports cluster nearest Upton -- 33 of the county's 91 hail days -- then Osage (15), Rochelle (14), Clareton (14) and Newcastle (14). Beyond those, NOAA names Four Corners, Downtown Newcastle, Downtown Newcastl, Buckhorn, Morrisey and Downtown Newcast on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Upton | 10 | 2.00″ |
| Newcastle | 8 | 1.50″ |
| 12 W Upton | 7 | 2.00″ |
| Downtown Newcastle | 6 | 1.75″ |
| 19 Sw Upton | 5 | 1.25″ |
The season runs June through August: 77 of the 91 hail days on record fall in those 3 months (85%). July is the single busiest month, with 31 of them (34%). That peak sits inside the window rather than at either end. Hail has also been reported in April and May, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| April | 1 |
| May | 13 |
| June | 29 |
| July | 31 |
| August | 17 |
That day put 3 reports on the map, the biggest 1.5 inches near Upton. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-07 | 1.50″ | 3 |
| 2026-07-03 | 2.00″ | 2 |
| 2026-06-22 | 1.00″ | 3 |
| 2025-08-15 | 1.00″ | 1 |
| 2025-06-29 | 1.00″ | 1 |
| 2025-06-28 | 1.50″ | 3 |
| 2024-07-03 | 1.00″ | 1 |
| 2023-07-30 | 2.75″ | 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 3 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, over the state line included: Crook County (123 hail days), Campbell County (132), Niobrara County (59), Lawrence County, South Dakota (121) and Custer County, South Dakota (158). Weston County sits in between.
Crook County · Campbell County · Niobrara County · Lawrence County, South Dakota · Custer County, South Dakota
Back to the Wyoming hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Weston County, Wyoming only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.