Sweet Grass County tornado history
2 tornadoes touched Sweet Grass County, Montana between 1950 and 2025 — about 0.0 a year. The strongest was rated F1 (Aug 22, 1965).
2tornadoes since 1950
F1strongest rating
0killed · 0 injured
1.5 milongest path · 1965
(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5· dots = start point only
By rating
(E)F01
(E)F11
(E)F20
(E)F30
(E)F40
(E)F50
By month
JFMAMJJASOND
Peak month: May.
By decade
’50’60’70’80’90’00’10’20
Strongest tornadoes
| Date | Rating | Path | Width | Injured | Killed |
|---|
| Aug 22, 1965 | F1 | 1.5 mi | 10 yd | 0 | 0 |
| May 20, 1973 | F0 | 0.1 mi | 17 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | Path | Width | Injured | Killed |
|---|
| May 20, 1973 | F0 | 0.1 mi | 17 yd | 0 | 0 |
| Aug 22, 1965 | F1 | 1.5 mi | 10 yd | 0 | 0 |
Nearby counties
Questions
How many tornadoes has Sweet Grass County, Montana had?
2 tornadoes touched Sweet Grass County, Montana between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.0 per year.
What was the strongest tornado in Sweet Grass County?
The strongest rating recorded was F1 on Aug 22, 1965, with a 1.5-mile path.
When is tornado season in Sweet Grass County?
Most of its tornadoes happened in May (1 of 2). Tornadoes can occur in any month, so keep alerts on year-round.
Right now: live tornado warnings map · alerts for your location. Dates link to that day’s full storm reports where available (2004 onward).