Niobrara County was hit as recently as 2026-06-22, 39 days ago. Niobrara County is hit in most years, and usually several times over. The largest stone on record here is 4.25 inches and 4.2 times the National Weather Service's 1 inch severe criterion, reported on 2020-07-19 near Lance Creek.
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 2026-06-22, around Van Tassell. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Niobrara 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 59 separate hail days here since 2010 -- 3.5 a year over 17 years of record. Those days carry 113 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 11 hail days. The last five years track the long-run rate, with 12 days since 2022.
10 of the 59 days reached 2 inches or more -- 17%, or about one hail day in 6, the last on 2025-07-06. Those big days do not follow the county's usual calendar: most of them fall in June, not July. 23 of the 59 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 Lusk -- 31 of the county's 59 hail days -- then Redbird (13), Manville (11), Lance Creek (9) and Van Tassell (7). That one town is named on 53% of them. Beyond those, NOAA names Mule Creek Junction, Keeline and Mule Creek Junctio on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Manville | 9 | 2.75″ |
| Lusk | 8 | 2.00″ |
| 10 N Van Tassell | 3 | 1.75″ |
| 7 Ne Lance Creek | 3 | 1.75″ |
| Lance Creek | 2 | 4.25″ |
The season runs May through July: 49 of the 59 hail days on record fall in those 3 months (83%). July is the single busiest month, with 23 of them (39%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in April, August and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 1 |
| May | 6 |
| June | 20 |
| July | 23 |
| August | 5 |
| September | 4 |
That day put 3 reports on the map, the biggest 1 inch near Van Tassell. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-22 | 1.00″ | 3 |
| 2026-06-02 | 1.50″ | 1 |
| 2025-07-06 | 2.75″ | 2 |
| 2024-07-17 | 1.25″ | 1 |
| 2023-09-22 | 2.50″ | 3 |
| 2023-07-08 | 1.50″ | 2 |
| 2023-07-06 | 2.00″ | 6 |
| 2023-06-28 | 1.50″ | 1 |
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 4.25 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: Converse County (44 hail days), Goshen County (100), Platte County (77), Sioux County, Nebraska (56) and Fall River County, South Dakota (94). Niobrara County sits in between.
Converse County · Goshen County · Platte County · Sioux County, Nebraska · Fall River 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, Niobrara County, Wyoming only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.