Hail history for Duncan, Oklahoma
NOAA hail reports in and within about 5 km (3 miles) of Duncan since 1956, with preliminary reports to November 3, 2026.
Readout · Duncan
- Last hail
- Apr 25, 2026
- 1.25 in, half dollar size
- Hail days, last 5 years
- 10
- since Nov 3, 2021 · 27 reports
- Largest ever
- 4.50 in
- softball · Oct 20, 1996
228 reports on 116 days since 1956 · #5 of 584 Oklahoma places
Hail map · Duncan
- 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 Duncan
The latest hail report in and around Duncan is from April 25, 2026, 1.25 in (half dollar size). Since November 3, 2021 there have been 10 separate hail days; the biggest stones in that time were 2.00 in on December 13, 2022.
Over the 20 years 2006–2025, Duncan logged 106 reports on 48 hail days, about 5.3 reports a year. That is 11.8 times the median Oklahoma town on this site (0.5 a year) and ranks #5 of 584 Oklahoma cities and towns on this site for all-time reports. Duncan accounts for 38% of the 598 reports filed in Stephens County.
8% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Oklahoma town on this site. The largest hail on record here is 4.50 in (softball) on October 20, 1996 near Empire City.
Reports held about level in 2016–2025 (53) compared with 2006–2015 (53). The busiest year was 2003, with 18 reports on 7 days. Hail here peaks in May (32% of reports); 67% fall between April and June.
Reports a year 2006–2025 average
- Duncan 5.3
- Stephens County 12.1
- Median Oklahoma town on this site 0.5
Hail days 2006–2025
- Duncan 48
- Stephens County 94
- Median Oklahoma town on this site 8
Share 2 in or larger of sized reports
- Duncan 8%
- Stephens County 8%
- Median Oklahoma town on this site 8%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 4 | 4 | 3 | 11 | |||||||||
| 2024 | 4 | 3 | 7 | ||||||||||
| 2023 | 2 | 1 | 4 | 7 | |||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 9 | 5 | 14 | ||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 2 | 2 | |||||||||||
| 2017 | 4 | 1 | 2 | 7 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 25, 2026 | 1 | 1.25 in | — |
| May 22, 2025 | 3 | 1.00 in | — |
| Apr 1, 2025 | 4 | 1.25 in | — |
| Mar 29, 2025 | 4 | 1.75 in | — |
| May 9, 2024 | 3 | 1.75 in | — |
| Apr 27, 2024 | 4 | 1.25 in | — |
| Jun 15, 2023 | 4 | 1.00 in | — |
| Apr 19, 2023 | 1 | 0.75 in | — |
| Mar 16, 2023 | 2 | 1.75 in | — |
| Dec 13, 2022 | 1 | 2.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Oct 20, 1996 | 4.50 insoftball | Empire City | Stephens | 19:15 local · NCEI |
| May 27, 2017 | 2.75 inbaseball | 1.38 N Duncan | Stephens | 19:00 local · NCEI |
| Apr 23, 2004 | 2.75 inbaseball | Duncan | Stephens | 16:08 local · NCEI |
| Oct 20, 1996 | 2.75 inbaseball | 2 SW Duncan | Stephens | 18:26 local · NCEI |
| Oct 20, 1996 | 2.75 inbaseball | Duncan | Stephens | 18:15 local · NCEI |
Size of every report
- Under 1 in 69 30%
- 1–2 in 141 62%
- 2 in + 18 8%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Apr 25, 2026 | 1.25 inhalf dollar | 1.48 N Duncan | Stephens | 17:13 local · NCEI |
| May 22, 2025 | 0.88 innickel | 0.8 W Sunray | Stephens | 16:45 local · NCEI |
| May 22, 2025 | 0.75 inpenny | 2.54 WNW Sunray | Stephens | 16:43 local · NCEI |
| May 22, 2025 | 1.00 inquarter | 1.21 S Duncan | Stephens | 07:35 local · NCEI |
| Apr 1, 2025 | 1.25 inhalf dollar | 1.97 NW Duncan | Stephens | 18:45 local · NCEI |
| Apr 1, 2025 | 1.00 inquarter | 0.24 SSW Duncan | Stephens | 18:45 local · NCEI |
| Apr 1, 2025 | 1.00 inquarter | 2.33 NNW Duncan | Stephens | 18:43 local · NCEI |
| Apr 1, 2025 | 0.75 inpenny | 1.57 NNW Duncan | Stephens | 18:42 local · NCEI |
| Mar 29, 2025 | 1.50 inping pong ball | 2.04 NW Duncan | Stephens | 20:40 local · NCEI |
| Mar 29, 2025 | 1.75 ingolf ball | Duncan | Stephens | 20:40 local · NCEI |
| Mar 29, 2025 | 1.50 inping pong ball | 1.32 NW Duncan | Stephens | 20:38 local · NCEI |
| Mar 29, 2025 | 1.00 inquarter | 1.98 ESE Empire City | Stephens | 20:24 local · NCEI |
Hail history near Duncan
Questions about hail in Duncan
How often does it hail in Duncan, Oklahoma?
228 hail reports have been logged in and within about 5 km (3 miles) of Duncan since 1956. Over the 20 years 2006–2025 that averages 5.3 reports a year. That ranks #5 of 584 Oklahoma places by number of reports.
When is hail season in Duncan?
Most reports come in May, April, March. May alone accounts for 32% of all reports.
What is the largest hail recorded in Duncan?
4.50 in (softball size) on October 20, 1996 near Empire City. 8% of reports here were 2 inches or larger.
When did it last hail in Duncan?
The most recent report in this data is from April 25, 2026 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Duncan had in the last five years?
10 separate days with hail reports since November 3, 2021, adding up to 27 reports. The most recent was April 25, 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.