Platte County, Wyoming Hail Map & History
Platte County was hit as recently as 2026-08-22, 23 days ago. Platte County is hit in most years, and usually several times over. The largest stone on record here is 4.5 inches, a softball and 4.5 times the National Weather Service's 1 inch severe criterion, reported on 2017-06-12 near Wheatland.
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 2026-08-22, around Sibley Peak. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Platte County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->How often it hails in Platte County
NOAA's Storm Prediction Center has logged 78 separate hail days here since 2010 -- 4.6 a year over 17 years of record. Those days carry 190 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 12 hail days. The last five years track the long-run rate, with 21 days since 2022.
15 of the 78 days reached 2 inches or more -- 19%, or about one hail day in 5, the last on 2023-06-23. They land in the same month as everything else, June. 35 of the 78 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Wyoming, see the Wyoming hail map and history.
Hardest-hit places in Platte County
Reports cluster nearest Wheatland -- 40 of the county's 78 hail days -- then Chugwater (18), Guernsey (15), Glendo (12) and Bordeaux (5). That one town is named on 51% of them. Beyond those, NOAA names Hartville and Sibley Peak on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Wheatland | 11 | 4.50″ |
| 4 N Wheatland | 5 | 2.00″ |
| Guernsey | 4 | 1.75″ |
| Chugwater | 3 | 4.00″ |
| Hartville | 3 | 3.00″ |
When it hails in Platte County
The season runs June through August: 64 of the 78 hail days on record fall in those 3 months (82%). June is the single busiest month, with 37 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 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 | 1 |
| May | 9 |
| June | 37 |
| July | 16 |
| August | 11 |
| September | 4 |
Recent Platte County hail days
That day put 1 report on the map, the biggest 1.25 inches near Sibley Peak. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-22 | 1.25″ | 1 |
| 2026-06-24 | 1.00″ | 1 |
| 2026-06-01 | 1.00″ | 2 |
| 2025-08-28 | 1.00″ | 1 |
| 2025-07-18 | 1.50″ | 1 |
| 2025-07-06 | 1.50″ | 1 |
| 2025-06-12 | 1.75″ | 5 |
| 2025-06-02 | 1.00″ | 1 |
How to read the Platte County map
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 4.5 inches, which is the purple band. Look up a street address with the hail history by address tool.
Nearby counties
The nearest counties with a page of their own, over the state line included: Goshen County (103 hail days), Albany County (34), Laramie County (132) and Sioux County, Nebraska (57). Platte County sits in between.
Goshen County · Albany County · Laramie County · Sioux County, Nebraska
Back to the Wyoming hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Platte County, Wyoming only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.