Hail HistoryHome › Wyoming › Natrona County › Casper
Hail history for Casper, WY
Hail has been reported within 10 miles of Casper on 29 days since 2006. The largest stones measured 2 in (hen egg) on Jun 16, 2025. Hail is most common here in June and July.
Casper ranks #631 for hail days among the 1,399 U.S. cities of 25,000 to 100,000 people. See the ranking →
Recent hail near Casper
| Date | Hail size | Where |
|---|---|---|
| Jul 6, 2026 | 1 in quarter | Casper 1 hail report · closest 3 mi from Casper |
| Jul 29, 2025 | 0.88 in nickel | Bar Nunn 1 hail report · closest 7 mi from Casper |
| Jun 16, 2025 | 2 in hen egg | Natrona Co Airport 1 hail report · closest 8 mi from Casper |
One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.
Hail days near Casper by year
When hail season peaks near Casper
Of the 29 hail days since 2006, most fell in June (8) and July (8).
Largest hail storms near Casper
Aug 26, 2006 · 2 in (hen egg) · Casper (8 mi from Casper)
Jun 8, 2011 · 2 in (hen egg) · Bar Nunn (5 mi from Casper)
National Weather Service description (English): An off-duty NWS employee and the public each reported two inch diameter hail on Interstate 25 at milepost 195 north of Bar Nunn.Jul 27, 2018 · 2 in (hen egg) · Evansville (3 mi from Casper)
National Weather Service description (English): Trained spotters reported anywhere from penny to quarter size hail on the east side of Casper and in Evansville. The storm intensified as it headed toward Casper Mountain. Along Hat Six Road southeast of Casper, hail up to the size of limes was reported.Jun 16, 2025 · 2 in (hen egg) · Natrona Co Airport (8 mi from Casper)
National Weather Service description (English): Government official reported egg size hail near the Natrona County Airport.Aug 22, 2007 · 1.75 in (golf ball) · Casper (3 mi from Casper)
National Weather Service description (English): A CoCoRaHS spotter estimated hail to be the size of golf balls.Tornadoes within 10 miles of Casper
| Date | Rating | Where |
|---|---|---|
| Aug 23, 2019 | EF0 | Casper Harford Airport 5 mi from Casper |
| Jul 26, 2018 | EF0 | Bar Nunn 2 mi from Casper |
| Jun 12, 2017 | EF0 | Bar Nunn 6 mi from Casper |
| May 7, 2008 | EF0 | Allendale 4 mi from Casper |
Damaging thunderstorm winds near Casper
58 reports of damaging thunderstorm wind within 10 miles of Casper since 2006, on 49 days. The strongest measured gust was 78 mph on Aug 10, 2026.
| Date | Strongest gust | Where |
|---|---|---|
| Sep 18, 2026 | 62 mph, measured | Casper 1 wind report |
| Aug 27, 2026 | 67 mph, measured | Mills, Casper 2 wind reports |
| Aug 24, 2026 | 52 mph, measured | Mills 1 wind report |
| Aug 10, 2026 | 78 mph, measured | Mills 1 wind report |
| Jul 6, 2026 | 59 mph, measured | Bar Nunn 1 wind report |
| Jun 25, 2026 | 77 mph, measured | Natrona Co Airport 1 wind report |
| Jun 7, 2026 | 62 mph, measured | Casper 1 wind report |
| May 24, 2026 | 58 mph, measured | Mills 1 wind report |
| Apr 11, 2026 | 64 mph, measured | Casper 1 wind report |
| Sep 11, 2025 | 67 mph, measured | Natrona Co Airport 1 wind report |
Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.
Filing a roof or car hail claim?
Insurers ask for the date of loss. The dates on this page are when hail was reported near Casper; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.
Nearby cities
Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then). Distances are measured from the center of Casper.
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