Hail & Wind Storms in Sioux Falls, SD — Latest Dates and Sizes
Hail and wind activity within ~25 miles of Sioux Falls, South Dakota or recorded for its county: the last 12 months from NWS warnings, storm reports, and station measurements, plus official NOAA records back to 2010.
Latest hail and wind near Sioux Falls
- Last reported hail (0.75 in.+, screening): August 20, 2026 — 1.75 in. reported 18.5 mi NW of Sioux Falls (Humboldt), NWS Local Storm Report.
- Last wind gust 45 mph+ (screening): September 11, 2026 — 58 mph reported 23.9 mi S of Sioux Falls (5 SE Davis), SPC storm report.
- 2026 so far: 6 hail days and 21 wind days within 25 miles (days with a storm report or station gust at the screening thresholds; warnings alone never count).
| Date | Largest reported hail | Strongest gust |
|---|---|---|
| September 11, 2026 | — | 58 mph reported |
| September 8, 2026 | — | 51 mph measured |
| September 5, 2026 | — | 52 mph measured |
| August 29, 2026 | — | 51 mph reported |
| August 20, 2026 | 1.75 in. reported | 76 mph measured |
| August 11, 2026 | 1.50 in. reported | — |
| July 25, 2026 | — | 92 mph reported |
| July 2, 2026 | — | 60 mph reported |
| July 1, 2026 | — | 64 mph reported (Iowa) |
| June 30, 2026 | — | 56 mph measured |
Was your address hit on September 11, 2026? Check any address free with the Free Report Snapshot — a YES/NO estimate at the screening thresholds.
Sioux Falls storm facts
- StormAuditor's analysis of NOAA and National Weather Service records found 196 wind and hail events, NWS warning products included, within 25 miles of Sioux Falls, South Dakota (including the parts of Iowa and Minnesota inside that circle) or recorded for Minnehaha County in the 12 months ending October 7, 2026 (131 wind, 65 hail).
- The strongest gust within 25 miles of Sioux Falls in the last 12 months was 92 mph, reported 8.3 mi SW of Sioux Falls (Tea) on July 25, 2026 (NWS Local Storm Report; storm reports and station gusts only, warnings excluded).
- The largest hail reported within 25 miles of Sioux Falls in the last 12 months was 1.75 in., 18.5 mi NW of Sioux Falls (Humboldt) on August 20, 2026 (NWS Local Storm Report).
- The busiest day by event count near Sioux Falls was July 25, 2026, with 25 events.
- Minnehaha County alone recorded 93 of those wind and hail events (54 wind, 39 hail); the South Dakota page ranks counties by events of every type, floods and Special Weather Statements included.
Sioux Falls, South Dakota storm history at a glance (last 12 months)
This free weather history for Sioux Falls — home to about 210,000 residents — draws on StormAuditor's consolidated public record: 196 wind and hail events within 25 miles of Sioux Falls (including the parts of Iowa and Minnesota inside that circle) or recorded for Minnehaha County in the trailing 12 months — 131 wind and 65 hail.
Events combine NWS warning products, observed Local Storm Reports, station measurements and official NCEI records in one event table. Because they include warnings, and wind covers thunderstorm and non-thunderstorm wind alike, they measure something different from the NCEI entry counts in the history section below; the two are not comparable year to year.
Busiest days near Sioux Falls by event count
Ranked by the number of 12-month events, NWS warnings included, so a day with many warnings can outrank a day with larger hail.
- July 25, 2026 — 25 events incl. warnings · 24 wind · 1 hail · storm-date page: 22 storm reports
- April 13, 2026 — 17 events incl. warnings · 1 wind · 16 hail
- August 20, 2026 — 14 events incl. warnings · 3 wind · 11 hail · storm-date page: 12 storm reports
- May 17, 2026 — 14 events incl. warnings · 6 wind · 8 hail
- May 31, 2026 — 12 events incl. warnings · 3 wind · 9 hail
Storm-day records for Sioux Falls
Storm-date pages for the biggest days near Sioux Falls: a report or station gust within 25 miles met NWS severe criteria (hail 1.00 in.+ or wind 58 mph+), with at least two separate observations. Not every storm day in the table above has a page. Each page lists the reports, station gusts and a free way to check one address:
How these numbers are counted
The storm numbers on this page are counted in four different ways, plus the free address check. Each answers a different question with its own size cutoffs, area and time span, so compare numbers within one group, not across groups.
- Storm days (latest hail and wind): A day in the last 12 months when at least one report within 25 miles of Sioux Falls showed hail 0.75 in. or larger or wind of 45 mph or more (StormAuditor screening thresholds). Reports are NWS storm reports from spotters, the public and officials, plus weather-station gusts, which count from 50 mph. A warning on its own never makes a storm day. The latest and largest hail, the latest and strongest gust, and the storm-day table all use this record. The 25-mile circle around Sioux Falls reaches into Iowa and Minnesota. Values marked with another state's name come from there: they count for Sioux Falls but not on the South Dakota state page, which counts reports inside South Dakota only.
- Storm-date pages (NWS severe): A storm-date page is published only when at least one report or station gust within 25 miles of a city met the National Weather Service severe criteria (hail 1.00 in. or larger, or wind 58 mph or more), at least two separate observations were logged, and the day ranks among the most significant. A storm report that relays an airport weather station's reading (the same station, the same gust and the same time) counts once, as the station reading. Not every storm day gets a page; when one does, the page and the storm-day table show the same largest hail and strongest gust.
- Events (12-month counts): Events count NWS warnings, storm reports (wind 50 mph+, hail 0.75 in.+), station gusts (50 mph+) and NCEI entries within 25 miles of Sioux Falls or recorded for Minnehaha County, tornado entries counted as wind. One event is one place on one day, counted separately for hail and for wind. A weather station or storm-report point counts once a day, at that day's highest reading, however many readings it filed; a place with hail and wind on the same day is two events. NWS warnings count once per county per day, and each NCEI entry once per place per day. A storm report that relays an airport weather station's reading (the same station, the same gust and the same time) counts once, as the station reading. The same report arriving through another feed (SPC or NCEI) is one record. Events measure how busy the area was, not whether a storm hit: one storm can bring warnings and reports from many places, so the busiest days by event count can differ from the storm days.
- NOAA history (since 2010): The official NOAA storm record (NCEI Storm Events) within 25 miles of Sioux Falls or in Minnehaha County from January 1, 2010 to the day before the 12-month window starts: hail 0.50 in.+, thunderstorm wind 40 mph+ and tornadoes. It is a separate, older record with its own "storm days" (days with any entry), so its counts are not compared with the 12-month numbers.
- Free Report Snapshot: A free YES/NO estimate for one address, from radar and wind analysis at the property rather than area reports, at the same screening thresholds: hail 0.75 in. or wind 45 mph.
Full method: Methodology and Data Sources.
Sioux Falls hail and wind history in NOAA NCEI records, 2010–Oct. 2025
This section covers January 1, 2010 through October 6, 2025. Storms from October 7, 2025 on are in the 12-month summary above, so no date is counted in both.
Hail (292 reports) and thunderstorm wind (320) appear in nearly equal numbers. In all: 635 NCEI Storm Events entries within 25 miles of Sioux Falls or in Minnehaha County, spread over 132 storm days.
Hail peaks in June (27% of all hail reports); thunderstorm wind peaks in July. None of these NCEI storm days fell in December through February.
Storm days ranged from 4 in 2024 to 13 in 2025 through Oct. 6. Across 2022–2024, the area averaged 7.0 storm days a year, below the 15-year average of 7.9.
The largest hail in these records for this area was 4.00 in. (grapefruit size), reported on August 28, 2021 in Lyon County, Iowa. Hail of 2 inches or more appears in 5 different years of this record, the latest being 2025 through Oct. 6. Measured thunderstorm gusts topped out at 96 mph (Minnehaha County, June 16, 2014). NCEI also lists 23 tornado entries for the area — one entry per county a tornado crossed.
- Average: 7.9 storm days a year (2010–2024)
- June and August: 52% of all hail reports
- Most hail reports in one year: 44 in 2022
- Hail of 1 in. or larger reported in 13 of 15 full years (2010–2024)
| Year | Hail reports | Thunderstorm wind reports | Tornado entries | Storm days | Largest hail | Strongest measured gust |
|---|---|---|---|---|---|---|
| 2010 | 20 | 30 | 0 | 12 | 1.75 in. | 72 mph |
| 2011 | 13 | 6 | 0 | 8 | 1.75 in. | — |
| 2012 | 11 | 5 | 0 | 6 | 1.50 in. | — |
| 2013 | 15 | 2 | 0 | 5 | 2.50 in. | — |
| 2014 | 39 | 7 | 5 | 10 | 2.00 in. | 96 mph |
| 2015 | 14 | 8 | 0 | 8 | 1.75 in. | 82 mph |
| 2016 | 9 | 10 | 1 | 8 | 1.75 in. | 59 mph |
| 2017 | 25 | 14 | 0 | 8 | 1.50 in. | 62 mph |
| 2018 | 18 | 12 | 2 | 7 | 1.75 in. | 75 mph |
| 2019 | 13 | 26 | 5 | 11 | 1.00 in. | 74 mph |
| 2020 | 2 | 12 | 0 | 6 | 0.75 in. | 81 mph |
| 2021 | 37 | 52 | 5 | 9 | 4.00 in. | 77 mph |
| 2022 | 44 | 78 | 4 | 8 | 2.50 in. | 87 mph |
| 2023 | 12 | 8 | 0 | 9 | 1.25 in. | 72 mph |
| 2024 | 1 | 13 | 0 | 4 | 0.75 in. | 66 mph |
| 2025 through Oct. 6 | 19 | 37 | 1 | 13 | 2.75 in. | 85 mph |
Download this history: CSV · JSON at https://www.stormauditor.com/downloads/storm-history/sd/sioux-falls.json (free, open license, cite StormAuditor).
Source: NOAA NCEI Storm Events Database (thunderstorm wind, hail, and tornado entries; hail 0.50 in. or larger, wind 40 mph or more; wind converted from knots).
Sioux Falls storm history questions, 2010–Oct. 2025
What is the largest hail reported near Sioux Falls, 2010–Oct. 2025?
4.00 in., grapefruit size, reported on August 28, 2021 in Lyon County, Iowa, per NCEI. Other years with hail of 2 inches or more: 2013, 2014, 2022 and 2025 through Oct. 6.
What was Sioux Falls's most active storm year, 2010–Oct. 2025?
2025 through Oct. 6, with 13 storm days (19 hail reports, 37 thunderstorm wind reports, 1 tornado entry). The 15-year average is 7.9 storm days.
How often does Sioux Falls get hail?
NCEI's records average 18 hail reports a year here over 2010–2024, alongside 19 thunderstorm wind reports. Hail of 1 inch or larger was reported in 13 of those 15 years.
When is hail season near Sioux Falls?
June has the most hail reports (79, 2010–Oct. 2025), followed by August (72) and May (62).
How strong were measured thunderstorm winds in Sioux Falls, 2010–Oct. 2025?
96 mph, measured on June 16, 2014 in Minnehaha County. Only gusts NCEI lists as measured count here; gusts measured on a date and county with a tornado entry, and entries of 120 knots or more (known entry errors), are left out.
Sioux Falls hail map and wind map
Researching hail or wind in Sioux Falls? The Hail Explorer and Wind Explorer map radar-derived hail swaths and peak-gust wind swaths across South Dakota, including the Sioux Falls metro: pick any storm date and see how estimated hail size and gust bands tracked through Minnehaha County. Both explorers are included with Pro+ and Organization plans.
County-level activity is on the Impact Heatmap (free with an account), and day-by-day history is on the Storm Calendar (Pro plans and higher).
Free Sioux Falls weather report by address
Area maps show where storms tracked; an insurance claim or roof inspection turns on what happened at the property. Three ways to check one Sioux Falls address:
- The Free Report Snapshot answers YES/NO instantly on estimated wind of 45 mph or more and hail of 0.75 in. or larger (screening thresholds) at the address.
- The free Address Lookup lists NWS warnings, storm reports and NOAA observations near the address — free Sioux Falls wind history and free Sioux Falls hail history.
- A complete Weather Report for $2.99 covers every qualifying storm date at one address over the last 2 years.
All values are estimates from public NOAA data under our published methodology (see Limitations).
Storm professionals: restoration and exterior contractors, public adjusters, and crews and teams on one Organization plan work from this same public record — see StormAuditor for professionals.
Sources: NWS alerts (api.weather.gov) · NWS Local Storm Reports via the Iowa Environmental Mesonet · ASOS/AWOS station gusts via the Iowa Environmental Mesonet · NOAA NCEI Storm Events Database · every StormAuditor data source.
Free Sioux Falls storm data download
The Sioux Falls storm records for the last 12 months download free, free to reuse under the data license: download CSV · JSON at https://www.stormauditor.com/downloads/storm-data/sd/sioux-falls.json.
- Coverage: every wind and hail record within about 25 miles of Sioux Falls (including the parts of Iowa and Minnesota inside that circle) or recorded for Minnehaha County, with dates, counties, event types, measured gusts and hail sizes.
- Rows: each source record before consolidation, including every NWS warning product and smaller storm reports, so the row count differs from the event counts above. The file holds South Dakota records only; the counts above also include the neighboring-state records inside the 25-mile circle.
- Statewide files are on the South Dakota storm data page.
Nearby city storm pages:
- Sioux City, IA hail & wind history
- Aberdeen hail & wind history
- Rapid City hail & wind history
- South Dakota statewide storm data
Guides for reading this data
Cite or link to this data — free
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Citation: StormAuditor. "Sioux Falls, SD Hail & Wind Storm History." Updated September 11, 2026. https://www.stormauditor.com/storm-data/sd/sioux-falls
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About this page: built by Storm Auditor LLC from public NOAA/NWS records — deduplicated warnings, storm reports, station measurements, and official records on a rolling 12-month window, under the published methodology. See the StormAuditor Editorial Team for how content is produced.
Data last refreshed October 7, 2026. Event counts cover wind and hail (warning products, and storm reports from 50 mph or 0.75 in.); flood activity and Special Weather Statements are not counted here.