Hail history for St. Lawrence County, New York
Every NOAA hail report filed in St. Lawrence County since 1966, with preliminary National Weather Service reports to November 3, 2026.
Readout · St. Lawrence County
- Last hail
- Jul 15, 2026
- 1.25 in, half dollar size
- Hail days, last 5 years
- 4
- since Nov 3, 2021 · 7 reports
- Largest ever
- 2.75 in
- baseball · Jul 14, 2026
76 reports on 51 days since 1966 · #30 of 63 New York counties
Hail map · St. Lawrence County
- 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 St. Lawrence County is from July 15, 2026. A local roofer can check and document it at no cost.
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What the record says about St. Lawrence County
The latest hail report in St. Lawrence County is from July 15, 2026, 1.25 in (half dollar size). Since November 3, 2021 there have been 4 separate hail days; the biggest stones in that time were 2.75 in on July 14, 2026.
Over the 20 years 2006–2025, St. Lawrence County logged 48 reports on 29 hail days, about 2.4 reports a year. That is about the same as the median New York county (2.5 a year) and ranks #30 of 63 New York counties for all-time reports. St. Lawrence County holds 1% of all 5,098 hail reports in New York.
7% of reports with a size were 2 inches (hen egg) or larger, against 2% for the median New York county. The largest hail on record here is 2.75 in (baseball) on July 14, 2026 near Hermon.
Reports were down 55% in 2016–2025 (15) compared with 2006–2015 (33). The busiest year was 2012, with 7 reports on 3 days. Hail here peaks in July (49% of reports); 29% fall between April and June.
Reports a year 2006–2025 average
- St. Lawrence County 2.4
- Median New York county 2.5
Hail days 2006–2025
- St. Lawrence County 29
- Median New York county 25
Share 2 in or larger of sized reports
- St. Lawrence County 7%
- Median New York county 2%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 4 | 4 | |||||||||||
| 2025 | 2 | 2 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 2 | 2 | |||||||||||
| 2019 | 1 | 1 | 2 | 4 | |||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jul 15, 2026 | 1 | 1.25 in | — |
| Jul 14, 2026 | 3 | 2.75 in | — |
| Jul 3, 2025 | 2 | 1.50 in | — |
| May 16, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 14, 2026 | 2.75 inbaseball | Hermon | 23:31 local · NCEI |
| Jul 14, 2026 | 2.00 inhen egg | 0.49 E De Kalb | 23:28 local · NCEI |
| Jul 14, 2026 | 2.00 inhen egg | 0.49 W De Peyster | 23:18 local · NCEI |
| Oct 1, 2019 | 2.00 inhen egg | (Mss)richards Fld Ma | 12:53 local · NCEI |
| Jul 10, 1966 | 2.00 inhen egg | — | 15:40 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 28 40%
- 1–2 in 37 53%
- 2 in + 5 7%
- No size 6
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 15, 2026 | 1.25 inhalf dollar | Horseshoe | 00:10 local · NCEI |
| Jul 14, 2026 | 2.75 inbaseball | Hermon | 23:31 local · NCEI |
| Jul 14, 2026 | 2.00 inhen egg | 0.49 E De Kalb | 23:28 local · NCEI |
| Jul 14, 2026 | 2.00 inhen egg | 0.49 W De Peyster | 23:18 local · NCEI |
| Jul 3, 2025 | 1.50 inping pong ball | 0.85 NW Gouverneur Arpt | 15:27 local · NCEI |
| Jul 3, 2025 | 1.50 inping pong ball | 0.85 NW Gouverneur Arpt | 14:27 local · NCEI |
| May 16, 2022 | 1.00 inquarter | 0.49 E Nicholville | 12:52 local · NCEI |
| Mar 29, 2020 | 0.75 inpenny | 0.69 N Gouverneur | 16:36 local · NCEI |
| Mar 29, 2020 | 1.00 inquarter | 1.21 SW Hailesboro | 16:33 local · NCEI |
| Oct 1, 2019 | 2.00 inhen egg | (Mss)richards Fld Ma | 12:53 local · NCEI |
| Oct 1, 2019 | 1.00 inquarter | 4 WNW (Mss)richards Fld Ma | 12:49 local · NCEI |
| Sep 26, 2019 | 1.25 inhalf dollar | Heuvelton | 15:31 local · NCEI |
Cities and towns in St. Lawrence County
| Place | Reports | Largest |
|---|---|---|
| Ogdensburg | 10 | 1.50 in |
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 |
|---|---|---|---|
| Massena | 7 | 5 | Oct 1, 2019 |
| Cranberry Lake | 4 | 4 | Jul 17, 2012 |
| Edwards | 4 | 3 | Jul 17, 2012 |
| Potsdam | 4 | 4 | Jul 11, 2019 |
| Star Lake | 4 | 4 | Jul 26, 2011 |
| Colton | 2 | 2 | Jul 18, 2013 |
| Hailesboro | 2 | 2 | Mar 29, 2020 |
| Heuvelton | 2 | 2 | Sep 26, 2019 |
| Madrid | 2 | 2 | May 30, 2005 |
| Richville | 2 | 1 | Jul 3, 2025 |
| Winthrop | 2 | 2 | Jul 17, 2012 |
| Brasher Falls | 1 | 1 | May 10, 2007 |
| Canton | 1 | 1 | Jul 4, 2012 |
| DeKalb Junction | 1 | 1 | Jul 14, 2026 |
| Gouverneur | 1 | 1 | Mar 29, 2020 |
| Hammond | 1 | 1 | Jun 30, 2006 |
| Hermon | 1 | 1 | Jul 14, 2026 |
| Norwood | 1 | 1 | Jul 24, 2008 |
Questions about hail in St. Lawrence County
How often does it hail in St. Lawrence County, New York?
76 hail reports have been logged in St. Lawrence County since 1966. Over the 20 years 2006–2025 that averages 2.4 reports a year. That ranks #30 of 63 New York counties by number of reports.
When is hail season in St. Lawrence County?
Most reports come in July, May, June. July alone accounts for 49% of all reports.
What is the largest hail recorded in St. Lawrence County?
2.75 in (baseball size) on July 14, 2026 near Hermon. 7% of reports here were 2 inches or larger.
When did it last hail in St. Lawrence County?
The most recent report in this data is from July 15, 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 St. Lawrence County had in the last five years?
4 separate days with hail reports since November 3, 2021, adding up to 7 reports. The most recent was July 15, 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.