Fremont County was hit as recently as 2026-07-23, 8 days ago. Fremont County is hit in about half the years on record. The largest stone on record here is 2 inches, a hen egg and twice the National Weather Service's 1 inch severe criterion, reported on 2023-06-23 near Riverton.
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 2026-07-23, around Kinnear. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Fremont 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 19 separate hail days here since 2010 -- 1.1 a year over 17 years of record. They carry 29 reports in total: most hail days here are logged from a single spot. 8 of those 17 years produced none at all. One year dominates the record: 2023 alone produced 4 of the 19 days. The last five years track the long-run rate, with 6 days since 2022.
Most hail here stays under 2 inches: only 1 of the 19 days on record passed it, 5%, the last on 2023-06-23. They land in the same month as everything else, June.
Across the whole of Wyoming, see the Wyoming hail map and history.
Reports cluster nearest Riverton -- 4 of the county's 19 hail days -- then Lander (3), Moneta (2), State Hwy 134 Mil (2) and Ethete (2). Beyond those, NOAA names Shoshoni on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Ethete | 2 | 1.25″ |
| Shoshoni | 2 | 1.00″ |
| 1 NE Riverton | 1 | 2.00″ |
| 2 N Lysite | 1 | 2.00″ |
| 1 NNE Riverton | 1 | 1.75″ |
The season runs June through August: 16 of the 19 hail days on record fall in those 3 months (84%). June is the single busiest month, with 9 of them (47%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in May and September, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| May | 1 |
| June | 9 |
| July | 4 |
| August | 3 |
| September | 2 |
That day put 1 report on the map, the biggest 1.25 inches near Kinnear. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-23 | 1.25″ | 1 |
| 2025-07-29 | 1.00″ | 1 |
| 2023-09-10 | 1.50″ | 3 |
| 2023-08-07 | 1.00″ | 1 |
| 2023-06-23 | 2.00″ | 9 |
| 2023-05-26 | 1.00″ | 1 |
| 2021-08-06 | 1.00″ | 1 |
| 2019-08-21 | 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 2 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: Park County (13 hail days), Natrona County (35) and Johnson County (37). Fremont County sits in between.
Park County · Natrona County · Johnson County
Back to the Wyoming hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Fremont County, Wyoming only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.