Hail history for Casper, Wyoming
NOAA hail reports in and within about 5 km (3 miles) of Casper since 1978, with preliminary reports to November 3, 2026.
Readout · Casper
- Last hail
- Jul 6, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 2.00 in
- hen egg · Jul 27, 2018
29 reports on 23 days since 1978 · #19 of 61 Wyoming places
Hail map · Casper
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Casper is from July 6, 2026. A local roofer can check and document it at no cost.
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What the record says about Casper
The latest hail report in and around Casper is from July 6, 2026, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on July 6, 2026.
Over the 20 years 2006–2025, Casper logged 16 reports on 12 hail days, about 0.8 reports a year. That is 23% more than the median Wyoming town on this site (0.7 a year) and ranks #19 of 61 Wyoming cities and towns on this site for all-time reports. Casper accounts for 17% of the 167 reports filed in Natrona County.
10% 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 2.00 in (hen egg) on July 27, 2018 near 1.39 SSE Evansville.
Reports were down 55% in 2016–2025 (5) compared with 2006–2015 (11). The busiest year was 2004, with 4 reports on 3 days. Hail here peaks in July (41% of reports); 38% fall between April and June.
Reports a year 2006–2025 average
- Casper 0.8
- Natrona County 5.3
- Median Wyoming town on this site 0.7
Hail days 2006–2025
- Casper 12
- Natrona County 63
- Median Wyoming town on this site 11
Share 2 in or larger of sized reports
- Casper 10%
- Natrona County 7%
- 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 | 1 | 1 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 1 | 2 | 3 | ||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jul 6, 2026 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jul 27, 2018 | 2.00 inhen egg | 1.39 SSE Evansville | Natrona | 16:10 local · NCEI |
| May 19, 1999 | 2.00 inhen egg | Casper | Natrona | 18:02 local · NCEI |
| Sep 2, 1986 | 2.00 inhen egg | — | Natrona | 19:50 local · NCEI |
| May 27, 2018 | 1.75 ingolf ball | 1.4 NNE Casper | Natrona | 14:50 local · NCEI |
| Jul 15, 2014 | 1.75 ingolf ball | 2.05 NE Allendale | Natrona | 17:00 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 9 31%
- 1–2 in 17 59%
- 2 in + 3 10%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jul 6, 2026 | 1.00 inquarter | Casper | Natrona | — | 16:16 local · NCEI |
| Jul 27, 2018 | 2.00 inhen egg | 1.39 SSE Evansville | Natrona | — | 16:10 local · NCEI |
| Jul 26, 2018 | 1.50 inping pong ball | Bar Nunn | Natrona | $1K | 14:30 local · NCEI |
| May 27, 2018 | 1.75 ingolf ball | 1.4 NNE Casper | Natrona | — | 14:50 local · NCEI |
| Jun 12, 2017 | 1.25 inhalf dollar | 2 S Evansville | Natrona | — | 17:05 local · NCEI |
| Sep 4, 2016 | 0.75 inpenny | Bar Nunn | Natrona | — | 16:14 local · NCEI |
| Jul 15, 2014 | 1.00 inquarter | 1.55 NNE Allendale | Natrona | — | 17:07 local · NCEI |
| Jul 15, 2014 | 1.50 inping pong ball | 1.71 NNE Allendale | Natrona | — | 17:03 local · NCEI |
| Jul 15, 2014 | 1.75 ingolf ball | 2.05 NE Allendale | Natrona | — | 17:00 local · NCEI |
| Jul 1, 2011 | 1.00 inquarter | 2.07 W Evansville | Natrona | — | 10:20 local · NCEI |
| May 26, 2010 | 0.75 inpenny | 1 S Casper | Natrona | — | 13:09 local · NCEI |
| Sep 20, 2009 | 0.75 inpenny | Casper | Natrona | — | 17:36 local · NCEI |
Hail history near Casper
- Vista West 10 km · 17
- Glenrock 39 km · 11
Questions about hail in Casper
How often does it hail in Casper, Wyoming?
29 hail reports have been logged in and within about 5 km (3 miles) of Casper since 1978. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #19 of 61 Wyoming places by number of reports.
When is hail season in Casper?
Most reports come in July, May, June. July alone accounts for 41% of all reports.
What is the largest hail recorded in Casper?
2.00 in (hen egg size) on July 27, 2018 near 1.39 SSE Evansville. 10% of reports here were 2 inches or larger.
When did it last hail in Casper?
The most recent report in this data is from July 6, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Casper had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was July 6, 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.