Hail history for Musselshell County, Montana
Every NOAA hail report filed in Musselshell County since 1955, with preliminary National Weather Service reports to November 3, 2026.
Readout · Musselshell County
- Last hail
- Jul 16, 2026
- 1.75 in, golf ball size
- Hail days, last 5 years
- 7
- since Nov 3, 2021 · 17 reports
- Largest ever
- 4.50 in
- softball · Jun 26, 1996
233 reports on 94 days since 1955 · #15 of 57 Montana counties
Hail map · Musselshell 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 Musselshell County
The latest hail report in Musselshell County is from July 16, 2026, 1.75 in (golf ball size). Since November 3, 2021 there have been 7 separate hail days; the biggest stones in that time were 2.00 in on July 9, 2022.
Over the 20 years 2006–2025, Musselshell County logged 143 reports on 49 hail days, about 7.2 reports a year. That is about twice the median Montana county (3.0 a year) and ranks #15 of 57 Montana counties for all-time reports. Musselshell County holds 3% of all 8,453 hail reports in Montana.
6% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Montana county. The largest hail on record here is 4.50 in (softball) on June 26, 1996 near 10 SSE Roundup.
Reports were down 21% in 2016–2025 (63) compared with 2006–2015 (80). The busiest year was 2001, with 38 reports on 13 days. Hail here peaks in July (41% of reports); 52% fall between April and June.
Reports a year 2006–2025 average
- Musselshell County 7.2
- Median Montana county 3.0
Hail days 2006–2025
- Musselshell County 49
- Median Montana county 31
Share 2 in or larger of sized reports
- Musselshell County 6%
- Median Montana county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3 | 3 | |||||||||||
| 2025 | 1 | 3 | 4 | ||||||||||
| 2024 | 1 | 1 | |||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 9 | 9 | |||||||||||
| 2021 | 3 | 3 | |||||||||||
| 2020 | 13 | 13 | |||||||||||
| 2019 | 4 | 2 | 3 | 9 | |||||||||
| 2018 | 8 | 3 | 11 | ||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jul 16, 2026 | 1 | 1.75 in | — |
| Jul 7, 2026 | 2 | 1.50 in | — |
| Jul 28, 2025 | 3 | 1.75 in | — |
| Jun 15, 2025 | 1 | 1.00 in | — |
| Jun 27, 2024 | 1 | 1.00 in | — |
| Jul 9, 2022 | 8 | 2.00 in | — |
| Jul 6, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 26, 1996 | 4.50 insoftball | 10 SSE Roundup | 20:10 local · NCEI |
| Jun 24, 2007 | 4.25 ingrapefruit | 4 S Roundup | 19:25 local · NCEI |
| Jul 4, 2013 | 3.00 inteacup | 6.84 NNE Roundup Arpt | 14:40 local · NCEI |
| Jul 8, 2013 | 2.75 inbaseball | 16.58 NNW Musselshell | 15:30 local · NCEI |
| Jul 16, 2011 | 2.75 inbaseball | 8.93 NNW Gage | 17:25 local · NCEI |
Size of every report
- Under 1 in 72 31%
- 1–2 in 147 63%
- 2 in + 14 6%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 16, 2026 | 1.75 ingolf ball | 6.69 WSW Elso | 18:02 local · NCEI |
| Jul 7, 2026 | 1.00 inquarter | 7.97 SSE Klein | 16:43 local · NCEI |
| Jul 7, 2026 | 1.50 inping pong ball | 10.46 S Klein | 16:35 local · NCEI |
| Jul 28, 2025 | 1.25 inhalf dollar | 1.18 NE Roundup Arpt | 17:22 local · NCEI |
| Jul 28, 2025 | 1.75 ingolf ball | 5.28 W Roundup Arpt | 17:17 local · NCEI |
| Jul 28, 2025 | 1.00 inquarter | 0.48 W Roundup | 17:16 local · NCEI |
| Jun 15, 2025 | 1.00 inquarter | 9.42 NNW Roundup Arpt | 18:20 local · NCEI |
| Jun 27, 2024 | 1.00 inquarter | 12 E Roundup | 12:30 local · NCEI |
| Jul 9, 2022 | 1.25 inhalf dollar | 0.47 E Melstone | 20:51 local · NCEI |
| Jul 9, 2022 | 1.00 inquarter | 5.19 ENE Musselshell | 20:47 local · NCEI |
| Jul 9, 2022 | 2.00 inhen egg | 4.48 SE Musselshell | 20:37 local · NCEI |
| Jul 9, 2022 | 1.00 inquarter | 6.22 NNE Roundup Arpt | 20:23 local · NCEI |
Cities and towns in Musselshell County
| Place | Reports | Largest |
|---|---|---|
| Roundup | 37 | 2.50 in |
| Melstone | 23 | 6.00 in |
| Camp Three | 16 | 1.75 in |
| Klein | 16 | 4.25 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 |
|---|---|---|---|
| Musselshell | 9 | 8 | Jul 9, 2022 |
| Kilby Butte Colony | 1 | 1 | Jun 9, 2016 |
Questions about hail in Musselshell County
How often does it hail in Musselshell County, Montana?
233 hail reports have been logged in Musselshell County since 1955. Over the 20 years 2006–2025 that averages 7.2 reports a year. That ranks #15 of 57 Montana counties by number of reports.
When is hail season in Musselshell County?
Most reports come in July, June, May. July alone accounts for 41% of all reports.
What is the largest hail recorded in Musselshell County?
4.50 in (softball size) on June 26, 1996 near 10 SSE Roundup. 6% of reports here were 2 inches or larger.
When did it last hail in Musselshell County?
The most recent report in this data is from July 16, 2026 (1.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Musselshell County had in the last five years?
7 separate days with hail reports since November 3, 2021, adding up to 17 reports. The most recent was July 16, 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.