Hail history for Byron, Minnesota
NOAA hail reports in and within about 5 km (3 miles) of Byron since 1982, with preliminary reports to November 3, 2026.
Readout · Byron
- Last hail
- May 20, 2024
- 0.75 in, penny size
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 3 reports
- Largest ever
- 1.50 in
- ping pong ball · Jul 25, 1982
31 reports on 24 days since 1982 · #52 of 451 Minnesota places
Hail map · Byron
- 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 Byron
The latest hail report in and around Byron is from May 20, 2024, 0.75 in (penny size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.00 in on July 22, 2023.
Over the 20 years 2006–2025, Byron logged 17 reports on 14 hail days, about 0.8 reports a year. That is 89% more than the median Minnesota town on this site (0.5 a year) and ranks #52 of 451 Minnesota cities and towns on this site for all-time reports. Byron accounts for 8% of the 373 reports filed in Olmsted County.
0% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Minnesota town on this site. The largest hail on record here is 1.50 in (ping pong ball) on July 25, 1982.
Reports held about level in 2016–2025 (8) compared with 2006–2015 (9). The busiest year was 2007, with 4 reports on 2 days. Hail here peaks in May (26% of reports); 65% fall between April and June.
Reports a year 2006–2025 average
- Byron 0.8
- Olmsted County 9.3
- Median Minnesota town on this site 0.5
Hail days 2006–2025
- Byron 14
- Olmsted County 64
- Median Minnesota town on this site 7
Share 2 in or larger of sized reports
- Byron 0%
- Olmsted County 4%
- Median Minnesota town on this site 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 1 | 1 | |||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 1 | 1 | |||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 2 | 2 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| May 20, 2024 | 1 | 0.75 in | — |
| Jul 22, 2023 | 1 | 1.00 in | — |
| May 9, 2022 | 1 | 0.88 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jul 25, 1982 | 1.50 inping pong ball | — | Olmsted | 17:50 local · NCEI |
| Apr 9, 2017 | 1.25 inhalf dollar | 0.99 E Byron | Olmsted | 19:49 local · NCEI |
| Jul 22, 2023 | 1.00 inquarter | 0.85 NE Byron | Olmsted | 18:30 local · NCEI |
| May 29, 2018 | 1.00 inquarter | Byron | Olmsted | 13:19 local · NCEI |
| Apr 9, 2017 | 1.00 inquarter | 2.81 S Genoa | Olmsted | 21:09 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 20 65%
- 1–2 in 11 35%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 20, 2024 | 0.75 inpenny | Byron | Olmsted | 17:50 local · NCEI |
| Jul 22, 2023 | 1.00 inquarter | 0.85 NE Byron | Olmsted | 18:30 local · NCEI |
| May 9, 2022 | 0.88 innickel | Byron | Olmsted | 18:29 local · NCEI |
| Apr 27, 2021 | 0.75 inpenny | 0.5 E Byron | Olmsted | 15:21 local · NCEI |
| Jun 4, 2019 | 0.88 innickel | 0.85 NE Byron | Olmsted | 16:15 local · NCEI |
| May 29, 2018 | 1.00 inquarter | Byron | Olmsted | 13:19 local · NCEI |
| Apr 9, 2017 | 1.00 inquarter | 2.81 S Genoa | Olmsted | 21:09 local · NCEI |
| Apr 9, 2017 | 1.25 inhalf dollar | 0.99 E Byron | Olmsted | 19:49 local · NCEI |
| May 26, 2012 | 0.75 inpenny | Byron | Olmsted | 11:13 local · NCEI |
| Jun 17, 2010 | 1.00 inquarter | 1.21 SE Byron | Olmsted | 19:59 local · NCEI |
| Jul 10, 2008 | 1.00 inquarter | Byron | Olmsted | 13:45 local · NCEI |
| May 30, 2008 | 0.75 inpenny | Byron | Olmsted | 15:43 local · NCEI |
Hail history near Byron
- Kasson 9 km · 24
- Mantorville 9 km · 14
- Rochester 13 km · 173
- Oronoco 16 km · 29
- Dodge Center 17 km · 15
- Pine Island 18 km · 19
- Stewartville 23 km · 36
- Hayfield 23 km · 27
Questions about hail in Byron
How often does it hail in Byron, Minnesota?
31 hail reports have been logged in and within about 5 km (3 miles) of Byron since 1982. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #52 of 451 Minnesota places by number of reports.
When is hail season in Byron?
Most reports come in May, June, August. May alone accounts for 26% of all reports.
What is the largest hail recorded in Byron?
1.50 in (ping pong ball size) on July 25, 1982. 0% of reports here were 2 inches or larger.
When did it last hail in Byron?
The most recent report in this data is from May 20, 2024 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Byron had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was May 20, 2024.
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.