Hail history for Carbon County, Wyoming
Every NOAA hail report filed in Carbon County since 1958, with preliminary National Weather Service reports to November 5, 2026.
Readout · Carbon County
- Last hail
- May 9, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 2
- since Nov 5, 2021 · 3 reports
- Largest ever
- 2.00 in
- hen egg · Jun 9, 2024
36 reports on 25 days since 1958 · #18 of 22 Wyoming counties
Hail map · Carbon County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Carbon County
The latest hail report in Carbon County is from May 9, 2026, 1.00 in (quarter size). Since November 5, 2021 there have been 2 separate hail days; the biggest stones in that time were 2.00 in on June 9, 2024.
Over the 20 years 2006–2025, Carbon County logged 20 reports on 11 hail days, about 1.0 reports a year. That is 22% of the median Wyoming county (4.5 a year) and ranks #18 of 22 Wyoming counties for all-time reports. Carbon County holds 1% of all 4,952 hail reports in Wyoming.
3% of reports with a size were 2 inches (hen egg) or larger, against 5% for the median Wyoming county. The largest hail on record here is 2.00 in (hen egg) on June 9, 2024 near 3.77 NE Medicine Bow.
Reports were up 86% in 2016–2025 (13) compared with 2006–2015 (7). The busiest year was 2018, with 8 reports on 2 days. Hail here peaks in May (36% of reports); 61% fall between April and June.
Reports a year 2006–2025 average
- Carbon County 1.0
- Median Wyoming county 4.5
Hail days 2006–2025
- Carbon County 11
- Median Wyoming county 55.5
Share 2 in or larger of sized reports
- Carbon County 3%
- Median Wyoming county 5%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 1 | 1 | |||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 7 | 1 | 8 | ||||||||||
| 2017 | 0 |
Hail days since Nov 5, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| May 9, 2026 | 1 | 1.00 in | — |
| Jun 9, 2024 | 2 | 2.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 9, 2024 | 2.00 inhen egg | 3.77 NE Medicine Bow | 19:58 local · NCEI |
| May 11, 2018 | 1.75 ingolf ball | 3.61 W Fort Steele | 17:15 local · NCEI |
| May 11, 2018 | 1.75 ingolf ball | 0.86 SE Rawlins | 16:46 local · NCEI |
| Jun 12, 2016 | 1.75 ingolf ball | Muddy Gap | 14:55 local · NCEI |
| Aug 27, 2002 | 1.75 ingolf ball | 20 NE Hanna | 16:20 local · NCEI |
Size of every report
- Under 1 in 9 26%
- 1–2 in 24 71%
- 2 in + 1 3%
- No size 2
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| May 9, 2026 | 1.00 inquarter | 4.29 NE Three Forks | 13:45 local · NCEI |
| Jun 9, 2024 | 2.00 inhen egg | 3.77 NE Medicine Bow | 19:58 local · NCEI |
| Jun 9, 2024 | 1.25 inhalf dollar | 2.92 NE Oil Springs | 19:21 local · NCEI |
| May 15, 2021 | 0.88 innickel | 0.86 SE Rawlins | 17:15 local · NCEI |
| Apr 26, 2019 | 1.00 inquarter | 46.78 WSW Encampment | 17:41 local · NCEI |
| Jul 5, 2018 | 1.00 inquarter | Seminoe Dam | 14:45 local · NCEI |
| May 11, 2018 | 1.75 ingolf ball | 3.61 W Fort Steele | 17:15 local · NCEI |
| May 11, 2018 | 1.25 inhalf dollar | 0.52 W Sinclair | 16:49 local · NCEI |
| May 11, 2018 | 1.75 ingolf ball | 0.86 SE Rawlins | 16:46 local · NCEI |
| May 11, 2018 | 1.00 inquarter | 0.86 SE Rawlins | 16:39 local · NCEI |
| May 11, 2018 | 1.25 inhalf dollar | 0.86 NE Rawlins | 16:35 local · NCEI |
| May 11, 2018 | 1.00 inquarter | 0.86 SE Rawlins | 16:34 local · NCEI |
Cities and towns in Carbon County
| Place | Reports | Largest |
|---|---|---|
| Rawlins | 10 | 1.75 in |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Medicine Bow | 5 | 4 | Jun 9, 2024 |
| Elk Mountain | 2 | 2 | Jul 4, 2010 |
| Baggs | 1 | 1 | Apr 26, 2019 |
| Sinclair | 1 | 1 | May 11, 2018 |
Questions about hail in Carbon County
How often does it hail in Carbon County, Wyoming?
36 hail reports have been logged in Carbon County since 1958. Over the 20 years 2006–2025 that averages 1.0 reports a year. That ranks #18 of 22 Wyoming counties by number of reports.
When is hail season in Carbon County?
Most reports come in May, July, June. May alone accounts for 36% of all reports.
What is the largest hail recorded in Carbon County?
2.00 in (hen egg size) on June 9, 2024 near 3.77 NE Medicine Bow. 3% of reports here were 2 inches or larger.
When did it last hail in Carbon County?
The most recent report in this data is from May 9, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 5, 2026.
How many hail storms has Carbon County had in the last five years?
2 separate days with hail reports since November 5, 2021, adding up to 3 reports. The most recent was May 9, 2026.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.