Hail history for Union, Missouri
NOAA hail reports in and within about 5 km (3 miles) of Union since 1981, with preliminary reports to November 3, 2026.
Readout · Union
- Last hail
- Mar 14, 2025
- 1.75 in, golf ball size
- Hail days, last 5 years
- 2
- since Nov 3, 2021 · 2 reports
- Largest ever
- 3.00 in
- teacup · Apr 15, 2023
40 reports on 34 days since 1981 · #78 of 491 Missouri places
Hail map · Union
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Union is from March 14, 2025. A local roofer can check and document it at no cost.
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What the record says about Union
The latest hail report in and around Union is from March 14, 2025, 1.75 in (golf ball size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 3.00 in on April 15, 2023.
Over the 20 years 2006–2025, Union logged 19 reports on 18 hail days, about 0.9 reports a year. That is about twice the median Missouri town on this site (0.5 a year) and ranks #78 of 491 Missouri cities and towns on this site for all-time reports. Union accounts for 13% of the 301 reports filed in Franklin County.
10% 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 3.00 in (teacup) on April 15, 2023 near Union.
Reports were down 73% in 2016–2025 (4) compared with 2006–2015 (15). The busiest year was 2001, with 5 reports on 3 days. Hail here peaks in April (35% of reports); 75% fall between April and June.
Reports a year 2006–2025 average
- Union 0.9
- Franklin County 8.0
- Median Missouri town on this site 0.5
Hail days 2006–2025
- Union 18
- Franklin County 86
- Median Missouri town on this site 9
Share 2 in or larger of sized reports
- Union 10%
- Franklin County 8%
- 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 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Mar 14, 2025 | 1 | 1.75 in | — |
| Apr 15, 2023 | 1 | 3.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Apr 15, 2023 | 3.00 inteacup | Union | Franklin | 16:06 local · NCEI |
| Apr 12, 1981 | 3.00 inteacup | — | Franklin | 10:42 local · NCEI |
| Jul 25, 1988 | 2.50 intennis ball | — | Franklin | 13:58 local · NCEI |
| Apr 7, 2015 | 2.00 inhen egg | 2.21 NW Moselle | Franklin | 08:40 local · NCEI |
| Mar 14, 2025 | 1.75 ingolf ball | 2.63 SE Union | Franklin | 19:47 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 19 48%
- 1–2 in 17 43%
- 2 in + 4 10%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Mar 14, 2025 | 1.75 ingolf ball | 2.63 SE Union | Franklin | 19:47 local · NCEI |
| Apr 15, 2023 | 3.00 inteacup | Union | Franklin | 16:06 local · NCEI |
| May 11, 2016 | 1.00 inquarter | Union | Franklin | 18:25 local · NCEI |
| Feb 20, 2016 | 0.75 inpenny | Union | Franklin | 19:40 local · NCEI |
| Apr 7, 2015 | 2.00 inhen egg | 2.21 NW Moselle | Franklin | 08:40 local · NCEI |
| Apr 2, 2015 | 1.00 inquarter | 1.41 SSE Union | Franklin | 21:00 local · NCEI |
| Apr 28, 2014 | 0.88 innickel | Union | Franklin | 13:39 local · NCEI |
| May 20, 2013 | 1.00 inquarter | Union | Franklin | 18:24 local · NCEI |
| Apr 10, 2013 | 1.00 inquarter | 2.27 NNE Jeffriesburg | Franklin | 13:45 local · NCEI |
| Apr 22, 2011 | 0.75 inpenny | Union | Franklin | 18:44 local · NCEI |
| Apr 22, 2011 | 1.00 inquarter | 1.63 NE St Clair Mem Arpt | Franklin | 10:05 local · NCEI |
| Apr 4, 2011 | 1.00 inquarter | Union | Franklin | 02:51 local · NCEI |
Hail history near Union
- St. Clair 10 km · 25
- Villa Ridge 10 km · 10
- Washington 13 km · 48
- Three Creeks 15 km · 14
- Gray Summit 16 km · 16
- Leslie 21 km · 12
- Pacific 22 km · 20
- Marthasville 22 km · 13
Questions about hail in Union
How often does it hail in Union, Missouri?
40 hail reports have been logged in and within about 5 km (3 miles) of Union since 1981. Over the 20 years 2006–2025 that averages 0.9 reports a year. That ranks #78 of 491 Missouri places by number of reports.
When is hail season in Union?
Most reports come in April, May, June. April alone accounts for 35% of all reports.
What is the largest hail recorded in Union?
3.00 in (teacup size) on April 15, 2023 near Union. 10% of reports here were 2 inches or larger.
When did it last hail in Union?
The most recent report in this data is from March 14, 2025 (1.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Union had in the last five years?
2 separate days with hail reports since November 3, 2021, adding up to 2 reports. The most recent was March 14, 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.