NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Cascade, MT
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
No tropical storm or hurricane has passed within 75 miles of Cascade, Montana since records began in 1851. Since 1950, 7 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 7
- EF3 or stronger
- 0
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Cascade
The strongest of the 7 tornadoes within 25 miles was an F2 on June 30, 1975; its path came within 23 miles. Of the 7, none had a path within 5 miles of the city centre, and none has come since 2000. The most recent tornado was on July 5, 1988. Cascade has more tornadoes within 25 miles than 71% of the 73 Montana cities on this site. Hail has been reported within 10 miles 14 times since 1983, with stones up to 1.75 inches (golf ball size). Of the 73 Montana cities, 68% have more hail reports within 10 miles than Cascade.
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Tornadoes within 25 miles of Cascade
By decade
- 1980s1
- 1970s5
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 30, 1975 | F2 | 23 mi | 0.1 mi | 0 / 0 |
| Jul 5, 1988 | F1 | 15 mi | 0.2 mi | 0 / 0 |
| Jul 3, 1978 | F1 | 12 mi | 1 mi | 0 / 0 |
| Jul 3, 1978 | F1 | 12 mi | 1 mi | 0 / 0 |
| Jul 3, 1978 | F1 | 12 mi | 1 mi | 0 / 0 |
| Jun 1, 1977 | F1 | 20 mi | 0.1 mi | 0 / 0 |
| Jun 7, 1953 | F0 | 22 mi | 0.1 mi | 0 / 0 |
The strongest 7 of 7, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Cascade
The Storm Prediction Center has 14 hail reports within 10 miles of Cascade since 1983, made on 11 separate days. Of these, 5 were 1 inch across or larger, and none reached 2 inches. The largest size, 1.75 inches (golf ball size), was reported on 2 days, most recently June 6, 2004. The most recent report is from May 28, 2014. June has the most reports, 5.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Cascade
The nearest NOAA station with 1991–2020 climate normals is Cascade 5 S, MT, in Cascade at 3,360 feet. July is the warmest, with an average high of 86°F and low of 52°F; January is the coolest, at 39°F and 19°F. May is the wettest at 3.0 inches of precipitation on average and January the driest at 0.5 inches; the year adds up to 16.9 inches over 42 days with at least a tenth of an inch. Highs reach 90°F on about 26 days a year, almost all from June to September. Lows fall below freezing on about 146 nights a year. Snowfall averages 66.8 inches a year, most of it in January. That 16.9 inches is more than at 45 of the 58 Montana stations used on this site (78%). Great Falls, 27 miles northeast, has its own station (Great Falls 16st, MT): 15.4 inches a year, 1.5 less than here, and the same July average high, 86°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 39 | 19 | 0.5 | 2 | 10.6 |
| Feb | 40 | 19 | 0.7 | 2 | 10.5 |
| Mar | 49 | 25 | 0.8 | 3 | 9.2 |
| Apr | 58 | 33 | 2.2 | 5 | 9.9 |
| May | 67 | 40 | 3.0 | 6 | 1.2 |
| Jun | 75 | 47 | 2.9 | 6 | 0.0 |
| Jul | 86 | 52 | 1.2 | 3 | 0.0 |
| Aug | 85 | 50 | 1.2 | 3 | 0.2 |
| Sep | 74 | 44 | 1.6 | 4 | 0.3 |
| Oct | 60 | 36 | 1.4 | 3 | 4.6 |
| Nov | 47 | 27 | 0.7 | 3 | 9.8 |
| Dec | 38 | 20 | 0.7 | 2 | 10.5 |
| Year | 60 | 34 | 16.9 | 42 | 66.8 |
Averages for 1991–2020 at Cascade 5 S, MT (3,360 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Cascade
Since 1996, the National Weather Service has logged 21 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Cascade: 19 thunderstorm wind reports and 2 heavy rain events. The strongest thunderstorm gust on record here was 72 mph, on July 30, 2012.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Cascade County, which includes Cascade, has been named in 7 federal disaster or emergency declarations since 1975, 5 of them major disasters (by incident: 2 biological emergencies, 2 floods, 1 fire, 1 hurricane). The latest major disaster declaration was Covid-19 Pandemic, on March 31, 2020. FEMA's National Risk Index gives Cascade County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively Moderate for inland flooding, strong wind and lightning; Relatively Low for hail and heat waves; Very Low for tornadoes. It models the county's expected loss from all 18 hazards it covers at $55.3 million a year, the 5th highest of 56 Montana counties; of the hazards above, the largest share, $25.4 million (46%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Cascade
- Great Falls, MT27 mi
- Fairfield, MT32 mi
- Helena, MT43 mi
- East Helena, MT45 mi
- Choteau, MT52 mi
- Clancy, MT53 mi
- Townsend, MT59 mi
- Conrad, MT68 mi
- Boulder, MT72 mi
- Deer Lodge, MT75 mi
- Shelby, MT87 mi
- Three Forks, MT92 mi
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