Hail history for Knox County, Maine
Every NOAA hail report filed in Knox County since 1986, with preliminary National Weather Service reports to November 3, 2026.
Readout · Knox County
- Last hail
- Sep 24, 2019
- 1.25 in, half dollar size
- Hail days, last 5 years
- 0
- since Nov 3, 2021 · 0 reports
- Largest ever
- 1.25 in
- half dollar · Sep 24, 2019
11 reports on 6 days since 1986 · #16 of 17 Maine counties
Hail map · Knox County
- 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 Knox County
The latest hail report in Knox County is from September 24, 2019, 1.25 in (half dollar size). There has been no hail report here in the five years since November 3, 2021.
Over the 20 years 2006–2025, Knox County logged 8 reports on 3 hail days, about 0.4 reports a year. That is 21% of the median Maine county (1.9 a year) and ranks #16 of 17 Maine counties for all-time reports. Knox County holds 1% of all 1,236 hail reports in Maine.
0% of reports with a size were 2 inches (hen egg) or larger, against 2% for the median Maine county. The largest hail on record here is 1.25 in (half dollar) on September 24, 2019 near 0.85 NW Pulpit Harbor.
Reports were up 200% in 2016–2025 (6) compared with 2006–2015 (2). The busiest year was 2019, with 4 reports on 1 day. Hail here peaks in July (36% of reports); 9% fall between April and June.
Reports a year 2006–2025 average
- Knox County 0.4
- Median Maine county 1.9
Hail days 2006–2025
- Knox County 3
- Median Maine county 22
Share 2 in or larger of sized reports
- Knox County 0%
- Median Maine county 2%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 4 | 4 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Sep 24, 2019 | 1.25 inhalf dollar | 0.85 NW Pulpit Harbor | 14:50 local · NCEI |
| Sep 24, 2019 | 1.00 inquarter | 2.42 NE Pulpit Harbor | 14:50 local · NCEI |
| Sep 24, 2019 | 1.00 inquarter | 0.5 E Rockland | 14:15 local · NCEI |
| Sep 24, 2019 | 1.00 inquarter | 0.69 S East Warren | 13:55 local · NCEI |
| Aug 6, 2016 | 1.00 inquarter | St George | 15:15 local · NCEI |
Size of every report
- Under 1 in 6 55%
- 1–2 in 5 45%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Sep 24, 2019 | 1.25 inhalf dollar | 0.85 NW Pulpit Harbor | 14:50 local · NCEI |
| Sep 24, 2019 | 1.00 inquarter | 2.42 NE Pulpit Harbor | 14:50 local · NCEI |
| Sep 24, 2019 | 1.00 inquarter | 0.5 E Rockland | 14:15 local · NCEI |
| Sep 24, 2019 | 1.00 inquarter | 0.69 S East Warren | 13:55 local · NCEI |
| Aug 6, 2016 | 0.88 innickel | 0.69 S Spruce Head | 15:20 local · NCEI |
| Aug 6, 2016 | 1.00 inquarter | St George | 15:15 local · NCEI |
| Jul 6, 2007 | 0.88 innickel | Warren | 12:35 local · NCEI |
| Jul 6, 2007 | 0.75 inpenny | Thomaston | 12:24 local · NCEI |
| Jun 8, 1999 | 0.75 inpenny | Hope | 13:40 local · NCEI |
| Jul 8, 1996 | 0.75 inpenny | Washington | 15:35 local · NCEI |
| Jul 18, 1986 | 0.75 inpenny | — | 14:45 local · NCEI |
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 |
|---|---|---|---|
| Rockland | 2 | 1 | Sep 24, 2019 |
| Thomaston | 1 | 1 | Jul 6, 2007 |
Questions about hail in Knox County
How often does it hail in Knox County, Maine?
11 hail reports have been logged in Knox County since 1986. Over the 20 years 2006–2025 that averages 0.4 reports a year. That ranks #16 of 17 Maine counties by number of reports.
When is hail season in Knox County?
Most reports come in July, September, August. July alone accounts for 36% of all reports.
What is the largest hail recorded in Knox County?
1.25 in (half dollar size) on September 24, 2019 near 0.85 NW Pulpit Harbor. 0% of reports here were 2 inches or larger.
When did it last hail in Knox County?
The most recent report in this data is from September 24, 2019 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Knox County had in the last five years?
None: there has been no hail report in Knox County since November 3, 2021. The last one was on September 24, 2019.
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.