Hail history for Thermopolis, Wyoming
NOAA hail reports in and within about 5 km (3 miles) of Thermopolis since 1982, with preliminary reports to November 3, 2026.
Readout · Thermopolis
- Last hail
- Jul 3, 2019
- 0.75 in, penny size
- Hail days, last 5 years
- 0
- since Nov 3, 2021 · 0 reports
- Largest ever
- 2.50 in
- tennis ball · Jul 1, 1982
15 reports on 13 days since 1982 · #49 of 61 Wyoming places
Hail map · Thermopolis
- 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 Thermopolis
The latest hail report in and around Thermopolis is from July 3, 2019, 0.75 in (penny size). There has been no hail report here in the five years since November 3, 2021.
Over the 20 years 2006–2025, Thermopolis logged 7 reports on 7 hail days, about 0.3 reports a year. That is about half the median Wyoming town on this site (0.7 a year) and ranks #49 of 61 Wyoming cities and towns on this site for all-time reports. Thermopolis accounts for 23% of the 65 reports filed in Hot Springs County.
7% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Wyoming town on this site. The largest hail on record here is 2.50 in (tennis ball) on July 1, 1982.
The busiest year was 1998, with 3 reports on 1 day. Hail here peaks in July (53% of reports); 20% fall between April and June.
Reports a year 2006–2025 average
- Thermopolis 0.3
- Hot Springs County 1.6
- Median Wyoming town on this site 0.7
Hail days 2006–2025
- Thermopolis 7
- Hot Springs County 29
- Median Wyoming town on this site 11
Share 2 in or larger of sized reports
- Thermopolis 7%
- Hot Springs County 5%
- Median Wyoming town on this site 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 1 | 1 | 2 | ||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 0 |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jul 1, 1982 | 2.50 intennis ball | — | Hot Springs | 15:00 local · NCEI |
| Jul 2, 1998 | 1.75 ingolf ball | Thermopolis | Hot Springs | 17:05 local · NCEI |
| Jul 2, 1998 | 1.75 ingolf ball | Thermopolis | Hot Springs | 17:02 local · NCEI |
| Jun 24, 1982 | 1.75 ingolf ball | — | Hot Springs | 15:05 local · NCEI |
| Jul 26, 2018 | 1.00 inquarter | 1.24 W Thermopolis | Hot Springs | 17:20 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 8 53%
- 1–2 in 6 40%
- 2 in + 1 7%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jul 3, 2019 | 0.75 inpenny | 1.61 SW Thermopolis Arpt | Hot Springs | 16:45 local · NCEI |
| May 16, 2019 | 0.75 inpenny | 1 S Thermopolis | Hot Springs | 16:15 local · NCEI |
| Jul 26, 2018 | 1.00 inquarter | 1.24 W Thermopolis | Hot Springs | 17:20 local · NCEI |
| Aug 26, 2016 | 0.88 innickel | 0.51 WSW Thermopolis | Hot Springs | 14:02 local · NCEI |
| Sep 18, 2014 | 0.75 inpenny | Thermopolis | Hot Springs | 22:08 local · NCEI |
| Aug 14, 2009 | 0.88 innickel | Thermopolis | Hot Springs | 15:50 local · NCEI |
| Jul 2, 2009 | 1.00 inquarter | Thermopolis | Hot Springs | 13:53 local · NCEI |
| Jul 29, 2004 | 0.88 innickel | Thermopolis | Hot Springs | 14:21 local · NCEI |
| Jul 2, 1998 | 1.00 inquarter | Thermopolis | Hot Springs | 17:09 local · NCEI |
| Jul 2, 1998 | 1.75 ingolf ball | Thermopolis | Hot Springs | 17:05 local · NCEI |
| Jul 2, 1998 | 1.75 ingolf ball | Thermopolis | Hot Springs | 17:02 local · NCEI |
| Jun 5, 1997 | 0.75 inpenny | 2 S Thermopolis | Hot Springs | 19:30 local · NCEI |
Hail history near Thermopolis
- Worland 46 km · 14
Questions about hail in Thermopolis
How often does it hail in Thermopolis, Wyoming?
15 hail reports have been logged in and within about 5 km (3 miles) of Thermopolis since 1982. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #49 of 61 Wyoming places by number of reports.
When is hail season in Thermopolis?
Most reports come in July, August, June. July alone accounts for 53% of all reports.
What is the largest hail recorded in Thermopolis?
2.50 in (tennis ball size) on July 1, 1982. 7% of reports here were 2 inches or larger.
When did it last hail in Thermopolis?
The most recent report in this data is from July 3, 2019 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Thermopolis had in the last five years?
None: there has been no hail report in and within about 5 km (3 miles) of Thermopolis since November 3, 2021. The last one was on July 3, 2019.
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.