Sweet Grass County weather alerts
There are no active weather alerts for Sweet Grass County, MT right now.
Since 2016 the National Weather Service has issued about 658 alerts that included Sweet Grass County, roughly 66 a year. The most common is the winter weather advisory (137 from 2016 to 2025). No tornado warnings were recorded here in that period. 2 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Sweet Grass County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Golden Valley County, Wheatland County, Meagher County, Stillwater County.
Sweet Grass County alert history
Alert events that included Sweet Grass County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 137 | 6 | October 11, 2026 |
| High Wind Warning | 135 | 13 | May 13, 2026 |
| High Wind Watch | 63 | 9 | May 14, 2026 |
| Severe Thunderstorm Warning | 61 | 8 | July 26, 2026 |
| Red Flag Warning | 44 | 9 | October 9, 2026 |
| Winter Storm Watch | 36 | 1 | March 12, 2026 |
| Winter Storm Warning | 36 | 1 | March 12, 2026 |
| Severe Thunderstorm Watch | 30 | 5 | August 27, 2026 |
| Fire Weather Watch | 28 | 9 | October 9, 2026 |
| Cold Weather Advisory | 25 | 0 | February 17, 2025 |
| Flood Advisory | 15 | 1 | September 19, 2026 |
| Flood Warning | 12 | 0 | June 13, 2022 |
| Flood Watch | 11 | 3 | September 19, 2026 |
| Heat Advisory | 9 | 1 | July 24, 2026 |
| Flash Flood Warning | 7 | 2 | September 19, 2026 |
| Extreme Cold Warning | 4 | 0 | January 12, 2024 |
| Extreme Heat Watch | 2 | 3 | August 1, 2026 |
| Blizzard Warning | 1 | 0 | December 17, 2016 |
| Extreme Heat Warning | 1 | 2 | August 1, 2026 |
| Dense Fog Advisory | 1 | 3 | November 1, 2026 |
Tornado history in Sweet Grass County
2 tornadoes have been recorded in Sweet Grass County since 1950. That ranks 41 of 56 counties in Montana. The most recent was on May 20, 1973 (rated F0).
Strongest tornadoes in Sweet Grass County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 22, 1965 | F1 | Sweet Grass County | 1.5 mi | 10 yd | 0 | 0 |
| May 20, 1973 | F0 | Sweet Grass County | 0.1 mi | 17 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 20, 1973 | F0 | Sweet Grass County | 0.1 mi | 17 yd | 0 | 0 |
| August 22, 1965 | F1 | Sweet Grass County | 1.5 mi | 10 yd | 0 | 0 |
About Sweet Grass County
- Population: 3,757 (2024 estimate)
- State: Montana
- NOAA Weather Radio SAME code: 030097 (how to use it)