Hail history for Alton, Missouri
NOAA hail reports in and within about 5 km (3 miles) of Alton since 1963, with preliminary reports to November 3, 2026.
Readout · Alton
- Last hail
- Apr 20, 2025
- 2.00 in, hen egg size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 2.75 in
- baseball · May 13, 1984
24 reports on 21 days since 1963 · #186 of 491 Missouri places
Hail map · Alton
- 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 Alton
The latest hail report in and around Alton is from April 20, 2025, 2.00 in (hen egg size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 2.00 in on April 20, 2025.
Over the 20 years 2006–2025, Alton logged 15 reports on 12 hail days, about 0.8 reports a year. That is 50% more than the median Missouri town on this site (0.5 a year) and ranks #186 of 491 Missouri cities and towns on this site for all-time reports. Alton accounts for 21% of the 116 reports filed in Oregon County.
13% of reports with a size were 2 inches (hen egg) or larger, against 5% for the median Missouri town on this site. The largest hail on record here is 2.75 in (baseball) on May 13, 1984.
Reports were down 85% in 2016–2025 (2) compared with 2006–2015 (13). The busiest year was 2014, with 3 reports on 2 days. Hail here peaks in April (29% of reports); 54% fall between April and June.
Reports a year 2006–2025 average
- Alton 0.8
- Oregon County 3.0
- Median Missouri town on this site 0.5
Hail days 2006–2025
- Alton 12
- Oregon County 39
- Median Missouri town on this site 9
Share 2 in or larger of sized reports
- Alton 13%
- Oregon County 5%
- Median Missouri town on this site 5%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 20, 2025 | 1 | 2.00 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 13, 1984 | 2.75 inbaseball | — | Oregon | — | 17:20 local · NCEI |
| Jul 11, 2009 | 2.50 intennis ball | 3.4 WSW Alton | Oregon | — | 20:45 local · NCEI |
| Apr 20, 2025 | 2.00 inhen egg | 0.55 E Alton | Oregon | — | 17:59 local · NCEI |
| Jun 7, 2014 | 1.75 ingolf ball | 2.61 ENE Alton | Oregon | $10K | 13:10 local · NCEI |
| Apr 25, 2006 | 1.75 ingolf ball | 3 S Alton | Oregon | — | 15:48 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 12 50%
- 1–2 in 9 38%
- 2 in + 3 13%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Apr 20, 2025 | 2.00 inhen egg | 0.55 E Alton | Oregon | — | 17:59 local · NCEI |
| Apr 8, 2020 | 1.25 inhalf dollar | 1.31 ESE Alton | Oregon | — | 17:12 local · NCEI |
| Jul 23, 2015 | 1.00 inquarter | 0.69 S Alton | Oregon | — | 17:49 local · NCEI |
| Jul 23, 2015 | 0.88 innickel | 0.69 S Alton | Oregon | — | 17:46 local · NCEI |
| Oct 2, 2014 | 0.75 inpenny | 0.69 S Alton | Oregon | — | 18:45 local · NCEI |
| Oct 2, 2014 | 0.75 inpenny | 0.69 S Alton | Oregon | — | 18:18 local · NCEI |
| Jun 7, 2014 | 1.75 ingolf ball | 2.61 ENE Alton | Oregon | $10K | 13:10 local · NCEI |
| Jun 11, 2011 | 0.88 innickel | 0.69 S Alton | Oregon | — | 14:35 local · NCEI |
| May 12, 2011 | 0.88 innickel | 1.49 SSW Alton | Oregon | — | 22:15 local · NCEI |
| Apr 27, 2011 | 0.75 inpenny | 0.69 S Alton | Oregon | — | 11:30 local · NCEI |
| Jul 11, 2009 | 2.50 intennis ball | 3.4 WSW Alton | Oregon | — | 20:45 local · NCEI |
| Nov 21, 2007 | 0.75 inpenny | 0.69 S Alton | Oregon | — | 13:40 local · NCEI |
Hail history near Alton
- Thayer 23 km · 31
- Koshkonong 25 km · 10
- Winona 35 km · 30
- Birch Tree 35 km · 24
- Fremont 36 km · 11
- West Plains 43 km · 95
- Mountain View 44 km · 24
- Van Buren 50 km · 31
Questions about hail in Alton
How often does it hail in Alton, Missouri?
24 hail reports have been logged in and within about 5 km (3 miles) of Alton since 1963. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #186 of 491 Missouri places by number of reports.
When is hail season in Alton?
Most reports come in April, May, July. April alone accounts for 29% of all reports.
What is the largest hail recorded in Alton?
2.75 in (baseball size) on May 13, 1984. 13% of reports here were 2 inches or larger.
When did it last hail in Alton?
The most recent report in this data is from April 20, 2025 (2.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Alton had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was April 20, 2025.
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.