Hail history for Arnold, Missouri
NOAA hail reports in and within about 5 km (3 miles) of Arnold since 1974, with preliminary reports to November 3, 2026.
Readout · Arnold
- Last hail
- Mar 14, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 6 reports
- Largest ever
- 2.75 in
- baseball · May 15, 1990
29 reports on 24 days since 1974 · #138 of 491 Missouri places
Hail map · Arnold
- 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 Arnold
The latest hail report in and around Arnold is from March 14, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.75 in on March 14, 2024.
Over the 20 years 2006–2025, Arnold logged 18 reports on 14 hail days, about 0.9 reports a year. That is 80% more than the median Missouri town on this site (0.5 a year) and ranks #138 of 491 Missouri cities and towns on this site for all-time reports. Arnold accounts for 9% of the 312 reports filed in Jefferson County.
14% 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 15, 1990.
Reports were down 20% in 2016–2025 (8) compared with 2006–2015 (10). The busiest year was 2025, with 3 reports on 1 day. Hail here peaks in April (34% of reports); 66% fall between April and June.
Reports a year 2006–2025 average
- Arnold 0.9
- Jefferson County 8.7
- Median Missouri town on this site 0.5
Hail days 2006–2025
- Arnold 14
- Jefferson County 82
- Median Missouri town on this site 9
Share 2 in or larger of sized reports
- Arnold 14%
- Jefferson County 6%
- 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 | 3 | 3 | |||||||||||
| 2024 | 2 | 1 | 3 | ||||||||||
| 2023 | 0 | ||||||||||||
| 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 | 3 | 1.00 in | — |
| May 21, 2024 | 1 | 1.00 in | — |
| Mar 14, 2024 | 2 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 15, 1990 | 2.75 inbaseball | — | Jefferson | 16:48 local · NCEI |
| May 11, 2016 | 2.50 intennis ball | 1.12 WNW Maxville | Jefferson | 12:25 local · NCEI |
| Jun 28, 1980 | 2.00 inhen egg | — | Jefferson | 19:10 local · NCEI |
| Apr 3, 1974 | 2.00 inhen egg | — | Jefferson | 12:41 local · NCEI |
| Mar 14, 2024 | 1.75 ingolf ball | 1.92 SW Mattese | St. Louis | 15:25 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 9 31%
- 1–2 in 16 55%
- 2 in + 4 14%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Mar 14, 2025 | 1.00 inquarter | 1.48 NNE Arnold | Jefferson | 20:40 local · NCEI |
| Mar 14, 2025 | 1.00 inquarter | 1.76 WNW Maxville | Jefferson | 20:38 local · NCEI |
| Mar 14, 2025 | 1.00 inquarter | 0.69 N Seckman | Jefferson | 20:35 local · NCEI |
| May 21, 2024 | 1.00 inquarter | 0.88 SE Paulina Hills | Jefferson | 19:02 local · NCEI |
| Mar 14, 2024 | 1.00 inquarter | 4.09 WSW Cliff Cave | St. Louis | 16:30 local · NCEI |
| Mar 14, 2024 | 1.75 ingolf ball | 1.92 SW Mattese | St. Louis | 15:25 local · NCEI |
| May 11, 2016 | 2.50 intennis ball | 1.12 WNW Maxville | Jefferson | 12:25 local · NCEI |
| Apr 27, 2016 | 1.25 inhalf dollar | Arnold | Jefferson | 21:59 local · NCEI |
| Apr 3, 2014 | 0.88 innickel | Arnold | Jefferson | 11:06 local · NCEI |
| Aug 16, 2012 | 0.88 innickel | Arnold | Jefferson | 14:43 local · NCEI |
| Jul 1, 2012 | 0.88 innickel | 3 S Arnold | Jefferson | 18:58 local · NCEI |
| May 25, 2011 | 1.75 ingolf ball | 0.39 NE Bayshore | Jefferson | 15:00 local · NCEI |
Hail history near Arnold
Questions about hail in Arnold
How often does it hail in Arnold, Missouri?
29 hail reports have been logged in and within about 5 km (3 miles) of Arnold since 1974. Over the 20 years 2006–2025 that averages 0.9 reports a year. That ranks #138 of 491 Missouri places by number of reports.
When is hail season in Arnold?
Most reports come in April, May, March. April alone accounts for 34% of all reports.
What is the largest hail recorded in Arnold?
2.75 in (baseball size) on May 15, 1990. 14% of reports here were 2 inches or larger.
When did it last hail in Arnold?
The most recent report in this data is from March 14, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Arnold had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 6 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.