Hail history for Rock County, Minnesota
Every NOAA hail report filed in Rock County since 1956, with preliminary National Weather Service reports to November 3, 2026.
Readout · Rock County
- Last hail
- May 17, 2026
- 1.25 in, half dollar size
- Hail days, last 5 years
- 7
- since Nov 3, 2021 · 12 reports
- Largest ever
- 4.00 in
- grapefruit · Jun 12, 1994
138 reports on 87 days since 1956 · #54 of 88 Minnesota counties
Hail map · Rock 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 Rock County
The latest hail report in Rock County is from May 17, 2026, 1.25 in (half dollar size). Since November 3, 2021 there have been 7 separate hail days; the biggest stones in that time were 2.75 in on April 28, 2025.
Over the 20 years 2006–2025, Rock County logged 61 reports on 39 hail days, about 3.0 reports a year. That is 21% less than the median Minnesota county (3.9 a year) and ranks #54 of 88 Minnesota counties for all-time reports. Rock County holds 1% of all 15,925 hail reports in Minnesota.
4% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Minnesota county. The largest hail on record here is 4.00 in (grapefruit) on June 12, 1994 near Luverne.
Reports were down 55% in 2016–2025 (19) compared with 2006–2015 (42). The busiest year was 2005, with 15 reports on 11 days. Hail here peaks in June (29% of reports); 55% fall between April and June.
Reports a year 2006–2025 average
- Rock County 3.0
- Median Minnesota county 3.9
Hail days 2006–2025
- Rock County 39
- Median Minnesota county 42
Share 2 in or larger of sized reports
- Rock County 4%
- Median Minnesota county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | 2 | ||||||||||
| 2025 | 3 | 3 | 6 | ||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 3 | 3 | |||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 3 | 3 | |||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| May 17, 2026 | 1 | 1.25 in | — |
| Apr 13, 2026 | 1 | 1.50 in | — |
| Sep 21, 2025 | 3 | 1.25 in | — |
| Apr 28, 2025 | 3 | 2.75 in | — |
| Jul 26, 2023 | 1 | 1.00 in | — |
| Jul 13, 2023 | 2 | 2.50 in | — |
| May 29, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 12, 1994 | 4.00 ingrapefruit | Luverne | 17:10 local · NCEI |
| Apr 28, 2025 | 2.75 inbaseball | 2.5 E Beaver Creek | 12:24 local · NCEI |
| Jul 13, 2023 | 2.50 intennis ball | Magnolia | 18:40 local · NCEI |
| Apr 28, 2025 | 2.00 inhen egg | 2.5 E Beaver Creek | 12:23 local · NCEI |
| Jun 24, 2003 | 2.00 inhen egg | Jasper | 18:06 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 66 48%
- 1–2 in 65 47%
- 2 in + 6 4%
- No size 1
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| May 17, 2026 | 1.25 inhalf dollar | 1.47 NNE Kanaranzi | 16:36 local · NCEI |
| Apr 13, 2026 | 1.50 inping pong ball | 0.69 S Luverne | 17:54 local · NCEI |
| Sep 21, 2025 | 1.25 inhalf dollar | 0.69 N Magnolia | 19:15 local · NCEI |
| Sep 21, 2025 | 1.00 inquarter | Hardwick | 18:30 local · NCEI |
| Sep 21, 2025 | 1.00 inquarter | 1.49 E Jasper | 17:51 local · NCEI |
| Apr 28, 2025 | 2.75 inbaseball | 2.5 E Beaver Creek | 12:24 local · NCEI |
| Apr 28, 2025 | 2.00 inhen egg | 2.5 E Beaver Creek | 12:23 local · NCEI |
| Apr 28, 2025 | 1.00 inquarter | 0.85 SE Beaver Creek | 12:15 local · NCEI |
| Jul 26, 2023 | 1.00 inquarter | 0.69 N Magnolia | 00:30 local · NCEI |
| Jul 13, 2023 | 2.50 intennis ball | Magnolia | 18:40 local · NCEI |
| Jul 13, 2023 | 0.88 innickel | Hardwick | 18:19 local · NCEI |
| May 29, 2022 | 1.00 inquarter | 4.99 W Hardwick | 03:35 local · NCEI |
Cities and towns in Rock County
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 |
|---|---|---|---|
| Kenneth | 4 | 2 | Jun 29, 2005 |
| Steen | 3 | 3 | Aug 23, 2012 |
Questions about hail in Rock County
How often does it hail in Rock County, Minnesota?
138 hail reports have been logged in Rock County since 1956. Over the 20 years 2006–2025 that averages 3.0 reports a year. That ranks #54 of 88 Minnesota counties by number of reports.
When is hail season in Rock County?
Most reports come in June, July, May. June alone accounts for 29% of all reports.
What is the largest hail recorded in Rock County?
4.00 in (grapefruit size) on June 12, 1994 near Luverne. 4% of reports here were 2 inches or larger.
When did it last hail in Rock County?
The most recent report in this data is from May 17, 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 Rock County had in the last five years?
7 separate days with hail reports since November 3, 2021, adding up to 12 reports. The most recent was May 17, 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.