Since the start of 2021, the National Weather Service's Storm Prediction Center has logged 28 days with at least one report of hail one inch or larger in Tulsa County, Oklahoma, and 7 of those days included hail the size of a golf ball (1.75 inches) or bigger. The largest report was 3.0 inches (tea cup-size). That is roughly 4.9 hail days a year, though reports vary a great deal from season to season.
How many hail days has Tulsa County had each year?
| Year | Hail reports | Days with 1"+ hail | Days with 1.75"+ hail | Largest report |
|---|---|---|---|---|
| 2021 | 5 | 2 | 1 | 1.75 in |
| 2022 | 6 | 6 | 0 | 1.25 in |
| 2023 | 3 | 3 | 1 | 1.75 in |
| 2024 | 11 | 7 | 1 | 3.0 in |
| 2025 | 13 | 5 | 3 | 2.0 in |
| 2026 (through Oct 5) | 8 | 5 | 1 | 1.75 in |
The most recent report in the county was on July 11, 2026, and 6 hail days were logged in the 12 months before Oct 6, 2026.
When does hail happen in Tulsa County?
| Month | Days with 1"+ hail (2021-2026) |
|---|---|
| March | 2 |
| April | 4 |
| May | 12 |
| June | 3 |
| July | 2 |
| August | 1 |
| September | 1 |
| October | 2 |
| December | 1 |
Across Oklahoma, the spring months (April through June) account for the largest share of hail days, which is why roof inspections and preparation are often best done before storm season starts.
What were the biggest hail days in Tulsa County?
| Date | Largest report | Places with reports | Reports that day |
|---|---|---|---|
| May 21, 2024 | 3.0 in (tea cup) | Collinsville, Broken Arrow, Jenks | 4 |
| May 19, 2025 | 2.0 in (hen egg) | Skiatook, Collinsville, Tulsa, Jenks | 5 |
| May 8, 2026 | 1.75 in (golf ball) | Tulsa, Skiatook, Collinsville | 3 |
| September 20, 2025 | 1.75 in (golf ball) | Owasso | 2 |
| May 24, 2025 | 1.75 in (golf ball) | Tulsa, Mannford | 3 |
| June 13, 2023 | 1.75 in (golf ball) | Broken Arrow | 1 |
| December 5, 2021 | 1.75 in (golf ball) | Broken Arrow, Tulsa | 3 |
| October 18, 2025 | 1.5 in (ping-pong ball) | Mannford, Glenpool | 2 |
What does hail this size do to a roof?
Hail this large is widely associated with serious damage to nearly any roofing material, along with dented vehicles, broken windows and damaged siding. Damage depends on more than size: wind-driven hail hits harder, older shingles are more brittle, and metal and tile fail in different ways. See our guides on hail damage and what to check after a storm for how to spot trouble from the ground.
Frequently asked questions
How often does it hail in Tulsa County? Since 2021 there have been 28 days with reported hail of one inch or larger, or roughly 4.9 a year on average. Individual years ranged from 2 to 7 days in this data.
What is the largest hail reported in Tulsa County? 3.0 inches (tea cup-size) in this data set, since 2021.
Does a report mean my roof was damaged? No. A report says hail of that size was observed somewhere near that place. Only an inspection can show whether a particular roof was affected.
Which months are most active? See the table above; across Oklahoma, April through June is the peak.
Where does this data come from? These figures come from preliminary storm reports compiled by the National Weather Service's Storm Prediction Center. Reports come from spotters, emergency managers and the public, and the Center lists hail of one inch or larger. A place with no report may still have had hail, and a report does not mean any specific home was damaged. Counties with more people tend to produce more reports.
Source
NWS Storm Prediction Center, daily filtered storm reports, 2021-01-01 to 2026-10-05: <https://www.spc.noaa.gov/climo/reports/> (daily files named YYMMDD_rpts_filtered.csv; preliminary reports, hail of 1 inch or larger).
Get your roof checked
If a storm has passed through Tulsa County and you are not sure what your roof is dealing with, Total Roof Protection OKC can inspect it and document what we find. Call 405-415-5841.