Hail history for Pennington County, South Dakota
Every NOAA hail report filed in Pennington County since 1955, with preliminary National Weather Service reports to November 3, 2026.
Readout · Pennington County
- Last hail
- Aug 23, 2026
- 0.70 in, marble size · preliminary
- Hail days, last 5 years
- 67
- since Nov 3, 2021 · 258 reports
- Largest ever
- 4.50 in
- softball · Jun 12, 2022
1,654 reports on 576 days since 1955 · #1 of 67 South Dakota counties
Hail map · Pennington County
- 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 Pennington County
The latest hail report in Pennington County is from August 23, 2026, 0.70 in (marble size). Since November 3, 2021 there have been 67 separate hail days; the biggest stones in that time were 4.50 in on June 12, 2022.
Over the 20 years 2006–2025, Pennington County logged 1,100 reports on 308 hail days, about 55.0 reports a year. That is 10.0 times the median South Dakota county (5.5 a year) and ranks #1 of 67 South Dakota counties for all-time reports. Pennington County holds 10% of all 17,223 hail reports in South Dakota.
11% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median South Dakota county. The largest hail on record here is 4.50 in (softball) on June 12, 2022 near 5.06 NNW Creighton.
Reports were up 35% in 2016–2025 (631) compared with 2006–2015 (469). The busiest year was 2020, with 120 reports on 18 days. Hail here peaks in July (37% of reports); 41% fall between April and June.
Reports a year 2006–2025 average
- Pennington County 55.0
- Median South Dakota county 5.5
Hail days 2006–2025
- Pennington County 308
- Median South Dakota county 54
Share 2 in or larger of sized reports
- Pennington County 11%
- Median South Dakota county 8%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 12 | 9 | 19 | 40 | |||||||||
| 2025 | 2 | 3 | 14 | 19 | |||||||||
| 2024 | 5 | 3 | 28 | 4 | 2 | 5 | 47 | ||||||
| 2023 | 25 | 21 | 52 | 9 | 5 | 3 | 115 | ||||||
| 2022 | 3 | 3 | 16 | 15 | 37 | ||||||||
| 2021 | 4 | 10 | 9 | 18 | 41 | ||||||||
| 2020 | 13 | 28 | 65 | 14 | 120 | ||||||||
| 2019 | 15 | 50 | 7 | 5 | 77 | ||||||||
| 2018 | 4 | 32 | 19 | 16 | 3 | 74 | |||||||
| 2017 | 7 | 3 | 20 | 1 | 31 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 23, 2026 | 2 | 0.70 in | View |
| Aug 18, 2026 | 3 | 1.50 in | View |
| Aug 16, 2026 | 1 | 0.88 in | View |
| Aug 11, 2026 | 11 | 3.00 in | View |
| Aug 10, 2026 | 2 | 1.50 in | View |
| Jul 3, 2026 | 5 | 1.25 in | — |
| Jul 2, 2026 | 4 | 1.75 in | — |
| Jun 22, 2026 | 9 | 1.75 in | — |
| Jun 4, 2026 | 3 | 1.00 in | — |
| Jul 19, 2025 | 5 | 1.00 in | — |
| Jul 18, 2025 | 1 | 1.50 in | — |
| Jul 6, 2025 | 6 | 1.75 in | — |
| Jul 1, 2025 | 2 | 1.00 in | — |
| Jun 28, 2025 | 1 | 1.50 in | — |
| Jun 25, 2025 | 2 | 1.25 in | — |
| Apr 27, 2025 | 2 | 1.75 in | — |
| Sep 15, 2024 | 5 | 1.00 in | — |
| Aug 26, 2024 | 1 | 0.75 in | — |
| Aug 11, 2024 | 1 | 1.75 in | — |
| Jul 28, 2024 | 1 | 1.75 in | — |
| Jul 19, 2024 | 1 | 0.75 in | — |
| Jul 3, 2024 | 2 | 1.00 in | — |
| Jun 25, 2024 | 9 | 2.00 in | — |
| Jun 24, 2024 | 8 | 2.25 in | — |
| Jun 17, 2024 | 1 | 1.25 in | — |
| Jun 10, 2024 | 1 | 0.75 in | — |
| Jun 1, 2024 | 9 | 1.25 in | — |
| May 26, 2024 | 2 | 1.75 in | — |
| May 19, 2024 | 1 | 0.75 in | — |
| Apr 25, 2024 | 1 | 0.75 in | — |
| Apr 15, 2024 | 4 | 1.25 in | — |
| Oct 2, 2023 | 3 | 1.00 in | — |
| Sep 13, 2023 | 1 | 1.00 in | — |
| Sep 8, 2023 | 1 | 1.50 in | — |
| Sep 4, 2023 | 3 | 1.00 in | — |
| Aug 24, 2023 | 1 | 0.75 in | — |
| Aug 12, 2023 | 8 | 2.00 in | — |
| Jul 30, 2023 | 12 | 3.25 in | — |
| Jul 29, 2023 | 2 | 1.25 in | — |
| Jul 28, 2023 | 1 | 1.50 in | — |
| Jul 24, 2023 | 1 | 1.00 in | — |
| Jul 21, 2023 | 1 | 1.00 in | — |
| Jul 11, 2023 | 22 | 2.00 in | — |
| Jul 8, 2023 | 1 | 1.50 in | — |
| Jul 3, 2023 | 12 | 2.75 in | — |
| Jun 28, 2023 | 10 | 1.75 in | — |
| Jun 27, 2023 | 8 | 1.75 in | — |
| Jun 23, 2023 | 3 | 1.00 in | — |
| May 30, 2023 | 8 | 1.75 in | — |
| May 29, 2023 | 10 | 1.25 in | — |
| May 27, 2023 | 1 | 0.75 in | — |
| May 17, 2023 | 1 | 1.00 in | — |
| May 7, 2023 | 5 | 1.75 in | — |
| Jul 29, 2022 | 1 | 1.00 in | — |
| Jul 10, 2022 | 4 | 1.00 in | — |
| Jul 8, 2022 | 2 | 1.50 in | — |
| Jul 4, 2022 | 1 | 1.00 in | — |
| Jul 3, 2022 | 4 | 2.75 in | — |
| Jul 2, 2022 | 2 | 1.00 in | — |
| Jul 1, 2022 | 1 | 0.88 in | — |
| Jun 13, 2022 | 3 | 2.75 in | — |
| Jun 12, 2022 | 2 | 4.50 in | — |
| Jun 11, 2022 | 3 | 1.75 in | — |
| Jun 7, 2022 | 2 | 1.75 in | — |
| Jun 6, 2022 | 6 | 1.00 in | — |
| May 11, 2022 | 3 | 1.00 in | — |
| Apr 22, 2022 | 3 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Jun 12, 2022 | 4.50 insoftball | 5.06 NNW Creighton | — | 17:45 local · NCEI |
| Aug 26, 2021 | 4.50 insoftball | 4 SE Deerfield | — | 17:05 local · NCEI |
| Aug 8, 2020 | 4.50 insoftball | 1 N Pactola Reservoir | —1 injured | 16:10 local · NCEI |
| Jul 6, 1977 | 4.50 insoftball | — | — | 18:30 local · NCEI |
| Aug 30, 2013 | 4.25 ingrapefruit | 1.38 N Johnson Siding | $500K | 12:40 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 449 27%
- 1–2 in 1,023 62%
- 2 in + 182 11%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Aug 23, 2026 | 0.70 inmarble | Hayward | 21:20 UTC · NWS prelim. |
| Aug 23, 2026 | 0.50 inmarble | 4 N Silver City | 19:55 UTC · NWS prelim. |
| Aug 18, 2026 | 1.00 inquarter | 5 NE Rockerville | 02:03 UTC · NWS prelim. |
| Aug 18, 2026 | 1.50 inping pong ball | 5 SW Dwtn Rapid City | 02:01 UTC · NWS prelim. |
| Aug 18, 2026 | 1.50 inping pong ball | 4 WSW Dwtn Rapid City | 01:59 UTC · NWS prelim. |
| Aug 16, 2026 | 0.88 innickel | 2 NW Dwtn Rapid City | 23:27 UTC · NWS prelim. |
| Aug 11, 2026 | 3.00 inteacup | 4 WNW Hermosa | 21:19 UTC · NWS prelim. |
| Aug 11, 2026 | 2.75 inbaseball | 1 E Hayward | 21:15 UTC · NWS prelim. |
| Aug 11, 2026 | 3.00 inteacup | 1 NNE Hayward | 21:15 UTC · NWS prelim. |
| Aug 11, 2026 | 2.50 intennis ball | 1 S Rockerville | 21:02 UTC · NWS prelim. |
| Aug 11, 2026 | 2.00 inhen egg | Rockerville | 20:59 UTC · NWS prelim. |
| Aug 11, 2026 | 1.75 ingolf ball | 3 ENE Rockerville | 20:59 UTC · NWS prelim. |
Cities and towns in Pennington County
| Place | Reports | Largest |
|---|---|---|
| Rapid City | 448 | 3.25 in |
| Colonial Pine Hills | 162 | 3.00 in |
| Johnson Siding | 125 | 4.50 in |
| Keystone | 117 | 3.00 in |
| Box Elder | 95 | 3.00 in |
| Hill City | 64 | 3.50 in |
| Green Valley | 30 | 3.00 in |
| Rapid Valley | 18 | 2.50 in |
| Wall | 14 | 2.00 in |
| New Underwood | 12 | 2.50 in |
| Wasta | 11 | 2.00 in |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Caputa | 9 | 9 | Jul 11, 2023 |
| Quinn | 8 | 6 | Apr 15, 2024 |
Questions about hail in Pennington County
How often does it hail in Pennington County, South Dakota?
1,654 hail reports have been logged in Pennington County since 1955. Over the 20 years 2006–2025 that averages 55.0 reports a year. That ranks #1 of 67 South Dakota counties by number of reports.
When is hail season in Pennington County?
Most reports come in July, June, August. July alone accounts for 37% of all reports.
What is the largest hail recorded in Pennington County?
4.50 in (softball size) on June 12, 2022 near 5.06 NNW Creighton. 11% of reports here were 2 inches or larger.
When did it last hail in Pennington County?
The most recent report in this data is from August 23, 2026 (0.70 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Pennington County had in the last five years?
67 separate days with hail reports since November 3, 2021, adding up to 258 reports. The most recent was August 23, 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.