Hail history for Glasgow, Montana
NOAA hail reports in and within about 5 km (3 miles) of Glasgow since 1955, with preliminary reports to November 3, 2026.
Readout · Glasgow
- Last hail
- Jun 15, 2025
- 1.25 in, half dollar size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 2 reports
- Largest ever
- 4.50 in
- softball · Jul 21, 1999
43 reports on 27 days since 1955 · #6 of 111 Montana places
Hail map · Glasgow
- 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 Glasgow
The latest hail report in and around Glasgow is from June 15, 2025, 1.25 in (half dollar size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.25 in on June 15, 2025.
Over the 20 years 2006–2025, Glasgow logged 24 reports on 12 hail days, about 1.2 reports a year. That is 2.7 times the median Montana town on this site (0.5 a year) and ranks #6 of 111 Montana cities and towns on this site for all-time reports. Glasgow accounts for 9% of the 470 reports filed in Valley County.
23% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Montana town on this site. The largest hail on record here is 4.50 in (softball) on July 21, 1999 near Glasgow.
Reports were down 29% in 2016–2025 (10) compared with 2006–2015 (14). The busiest year was 2011, with 8 reports on 2 days. Hail here peaks in June (56% of reports); 65% fall between April and June.
Reports a year 2006–2025 average
- Glasgow 1.2
- Valley County 12.6
- Median Montana town on this site 0.5
Hail days 2006–2025
- Glasgow 12
- Valley County 96
- Median Montana town on this site 7
Share 2 in or larger of sized reports
- Glasgow 23%
- Valley County 9%
- Median Montana town on this site 8%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 2 | 2 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 2 | 2 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 15, 2025 | 2 | 1.25 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jul 21, 1999 | 4.50 insoftball | Glasgow | Valley | $1.5 million | 18:50 local · NCEI |
| Jun 16, 2007 | 3.00 inteacup | 3 NW Glasgow | Valley | $8.0 million | 16:50 local · NCEI |
| Jul 21, 1999 | 2.50 intennis ball | Glasgow | Valley | — | 18:40 local · NCEI |
| Jun 29, 2011 | 2.25 inhen egg | Glasgow Intl Airport (Kggw) | Valley | — | 18:48 local · NCEI |
| Jun 18, 2016 | 2.00 inhen egg | 2 NNW Glasgow | Valley | — | 19:25 local · NCEI |
Size of every report
- Under 1 in 13 30%
- 1–2 in 20 47%
- 2 in + 10 23%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jun 15, 2025 | 1.25 inhalf dollar | 0.69 N Glasgow | Valley | 18:42 local · NCEI |
| Jun 15, 2025 | 1.00 inquarter | 1.15 NW Glasgow | Valley | 18:30 local · NCEI |
| May 20, 2020 | 1.00 inquarter | Glasgow | Valley | 20:15 local · NCEI |
| May 20, 2020 | 1.00 inquarter | Glasgow | Valley | 20:02 local · NCEI |
| Aug 9, 2016 | 0.88 innickel | 0.46 W Glasgow | Valley | 22:38 local · NCEI |
| Jun 18, 2016 | 1.75 ingolf ball | 0.46 W Glasgow | Valley | 19:25 local · NCEI |
| Jun 18, 2016 | 2.00 inhen egg | 2 NNW Glasgow | Valley | 19:25 local · NCEI |
| Jun 18, 2016 | 1.25 inhalf dollar | 2 NNW Glasgow | Valley | 19:17 local · NCEI |
| Jun 11, 2016 | 1.00 inquarter | 0.46 W Glasgow | Valley | 00:35 local · NCEI |
| Jun 11, 2016 | 1.00 inquarter | 2 NNW Glasgow | Valley | 00:33 local · NCEI |
| Jul 5, 2013 | 0.75 inpenny | 1.66 SSE Glasgow | Valley | 06:59 local · NCEI |
| May 25, 2013 | 0.75 inpenny | 1.2 NW Glasgow | Valley | 17:49 local · NCEI |
Hail history near Glasgow
Questions about hail in Glasgow
How often does it hail in Glasgow, Montana?
43 hail reports have been logged in and within about 5 km (3 miles) of Glasgow since 1955. Over the 20 years 2006–2025 that averages 1.2 reports a year. That ranks #6 of 111 Montana places by number of reports.
When is hail season in Glasgow?
Most reports come in June, July, May. June alone accounts for 56% of all reports.
What is the largest hail recorded in Glasgow?
4.50 in (softball size) on July 21, 1999 near Glasgow. 23% of reports here were 2 inches or larger.
When did it last hail in Glasgow?
The most recent report in this data is from June 15, 2025 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Glasgow had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 2 reports. The most recent was June 15, 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.