Hail history for Prairie County, Montana
Every NOAA hail report filed in Prairie County since 1960, with preliminary National Weather Service reports to November 3, 2026.
Readout · Prairie County
- Last hail
- Aug 21, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 8
- since Nov 3, 2021 · 13 reports
- Largest ever
- 4.50 in
- softball · Jul 3, 1969
185 reports on 106 days since 1960 · #20 of 57 Montana counties
Hail map · Prairie 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 Prairie County is from August 21, 2025. A local roofer can check and document it at no cost.
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What the record says about Prairie County
The latest hail report in Prairie County is from August 21, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 8 separate hail days; the biggest stones in that time were 1.75 in on July 25, 2025.
Over the 20 years 2006–2025, Prairie County logged 100 reports on 55 hail days, about 5.0 reports a year. That is 64% more than the median Montana county (3.0 a year) and ranks #20 of 57 Montana counties for all-time reports. Prairie County holds 2% of all 8,453 hail reports in Montana.
7% 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 July 3, 1969.
Reports were down 57% in 2016–2025 (30) compared with 2006–2015 (70). The busiest year was 2001, with 15 reports on 8 days. Hail here peaks in July (44% of reports); 35% fall between April and June.
Reports a year 2006–2025 average
- Prairie County 5.0
- Median Montana county 3.0
Hail days 2006–2025
- Prairie County 55
- Median Montana county 31
Share 2 in or larger of sized reports
- Prairie County 7%
- Median Montana county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 5 | 1 | 6 | ||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 7 | 7 | |||||||||||
| 2021 | 3 | 1 | 4 | ||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 3 | 3 | |||||||||||
| 2018 | 2 | 2 | 1 | 2 | 7 | ||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 21, 2025 | 1 | 1.00 in | — |
| Jul 25, 2025 | 2 | 1.75 in | — |
| Jul 20, 2025 | 3 | 1.50 in | — |
| Jul 15, 2022 | 1 | 1.00 in | — |
| Jul 9, 2022 | 2 | 1.00 in | — |
| Jul 5, 2022 | 1 | 1.00 in | — |
| Jul 3, 2022 | 1 | 1.00 in | — |
| Jul 2, 2022 | 2 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 3, 1969 | 4.50 insoftball | — | 19:00 local · NCEI |
| Jun 10, 2021 | 3.00 inteacup | 10.94 WNW Mc Cloud | 18:55 local · NCEI |
| Jun 10, 2021 | 2.75 inbaseball | 10.56 NNW Mc Cloud | 19:00 local · NCEI |
| Jun 8, 2002 | 2.75 inbaseball | Mildred | 16:00 local · NCEI |
| Jun 7, 2018 | 2.50 intennis ball | 1.68 SW Kamm | 18:23 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 71 38%
- 1–2 in 102 55%
- 2 in + 12 6%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Aug 21, 2025 | 1.00 inquarter | 15.12 NNE Mc Cloud | 02:53 local · NCEI |
| Jul 25, 2025 | 1.75 ingolf ball | 10 E Sutherland | 16:36 local · NCEI |
| Jul 25, 2025 | 1.00 inquarter | 3.59 ENE Blatchford | 16:10 local · NCEI |
| Jul 20, 2025 | 1.50 inping pong ball | 1.98 NE Kamm | 17:45 local · NCEI |
| Jul 20, 2025 | 1.00 inquarter | 0.69 N Terry | 17:24 local · NCEI |
| Jul 20, 2025 | 1.00 inquarter | 0.84 NW Terry | 17:20 local · NCEI |
| Jul 15, 2022 | 1.00 inquarter | 14.24 E Mildred | 20:03 local · NCEI |
| Jul 9, 2022 | 1.00 inquarter | Terry | 22:55 local · NCEI |
| Jul 9, 2022 | 1.00 inquarter | 2.51 SW Kamm | 22:43 local · NCEI |
| Jul 5, 2022 | 1.00 inquarter | 15.12 NNE Mc Cloud | 19:50 local · NCEI |
| Jul 3, 2022 | 1.00 inquarter | 1.46 NNW Terry | 18:03 local · NCEI |
| Jul 2, 2022 | 1.00 inquarter | 15.16 NE Mc Cloud | 15:47 local · NCEI |
Cities and towns in Prairie County
| Place | Reports | Largest |
|---|---|---|
| Terry | 30 | 2.00 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 |
|---|---|---|---|
| Fallon | 8 | 8 | Jun 21, 2015 |
Questions about hail in Prairie County
How often does it hail in Prairie County, Montana?
185 hail reports have been logged in Prairie County since 1960. Over the 20 years 2006–2025 that averages 5.0 reports a year. That ranks #20 of 57 Montana counties by number of reports.
When is hail season in Prairie County?
Most reports come in July, June, August. July alone accounts for 44% of all reports.
What is the largest hail recorded in Prairie County?
4.50 in (softball size) on July 3, 1969. 6% of reports here were 2 inches or larger.
When did it last hail in Prairie County?
The most recent report in this data is from August 21, 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 Prairie County had in the last five years?
8 separate days with hail reports since November 3, 2021, adding up to 13 reports. The most recent was August 21, 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.