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Weather & Climate in Cass Lake, MN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Cass Lake has a cool climate with an average annual temperature of 40°F (4°C). Winters average 7°F in January while summers reach 69°F in July / a wide seasonal temperature swing of 62°F. The area gets 276 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 26.5 inches (drier than the 38-inch national average). The area receives 48.9 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 36. The city sits at an elevation of 1,336 feet.
Temperature
7°F Jan (-14°C)
69°F Jul (20°C)
| Annual Average | 40.0°F |
| 26% below US avg | |
| January Average | 7°F (-14°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 1,336 ft (407 m) |
| Area | 1.1 sq mi (2.8 km²) |
| Population Density | 451/sq mi |
| Coordinates | 47.3797°N, 94.5994°W |
| Timezone | America/Chicago |
| County | Hubbard County County |
| Nearest Airport | Bemidji Regional (BJI) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 35.2 / 100 |
| Social Vulnerability | 38.9 / 100 |
| Community Resilience | 51.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
145 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 13 fatalities, 84 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 6, 1969 | EF4 | 73 km | 32.3 mi | 12 |
| Jun 11, 1966 | EF4 | 85 km | 72.8 mi | 0 |
| Jun 6, 2008 | EF3 | 55 km | 7.3 mi | 0 |
| Aug 6, 1969 | EF3 | 74 km | 17.3 mi | 0 |
| Jun 12, 2024 | EF2 | 81 km | 3.2 mi | 0 |
| Jul 22, 2013 | EF2 | 99 km | 21.1 mi | 0 |
| Jul 11, 2008 | EF2 | 93 km | 16.0 mi | 0 |
| Jun 6, 2008 | EF2 | 79 km | 14.1 mi | 0 |
| Oct 26, 1996 | EF2 | 97 km | 4.0 mi | 0 |
| Jul 5, 1991 | EF2 | 48 km | 2.5 mi | 0 |
| Aug 5, 1981 | EF2 | 60 km | 0.8 mi | 0 |
| Sep 1, 1973 | EF2 | 91 km | 54.5 mi | 0 |
| Aug 25, 1960 | EF2 | 71 km | 0.2 mi | 0 |
| Jun 24, 2022 | EF1 | 83 km | 3.8 mi | 0 |
| Jun 20, 2022 | EF1 | 41 km | 3.7 mi | 0 |
| May 30, 2022 | EF1 | 92 km | 4.3 mi | 0 |
| May 30, 2022 | EF1 | 61 km | 2.5 mi | 0 |
| Oct 9, 2021 | EF1 | 64 km | 0.2 mi | 0 |
| Jul 26, 2021 | EF1 | 60 km | 4.1 mi | 0 |
| Jul 26, 2021 | EF1 | 64 km | 0.8 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: REINER 36 (67,641 acres, 2003).
| Year | Name | Acres Burned | Distance |
| 2003 | REINER 36 | 67,641 | 97 km |
| 1989 | UNNAMED | 66,422 | 100 km |
| 1991 | UNNAMED | 37,840 | 88 km |
| 1990 | UNNAMED | 32,693 | 90 km |
| 1987 | SANDY LAKE | 26,617 | 92 km |
| 1994 | UNNAMED | 8,690 | 92 km |
| 2021 | RL 005 UNIT 8 AND 9 | 6,352 | 84 km |
| 2003 | HICKORY ONE | 6,152 | 99 km |
| 2002 | RED LAKE 468 | 6,076 | 83 km |
| 2021 | RL 203 GOODS | 5,555 | 95 km |
| 2000 | RL205 | 5,239 | 100 km |
| 2018 | RL 029 UNIT 4 | 5,076 | 84 km |
| 2007 | RED LAKE 05 | 4,737 | 97 km |
| 1991 | UNNAMED | 4,625 | 97 km |
| 2004 | UNNAMED | 3,970 | 91 km |
| 2018 | BOY RIVER | 3,546 | 37 km |
| 2005 | RED LAKE 045 | 3,374 | 100 km |
| 1991 | UNNAMED | 3,181 | 63 km |
| 1988 | UNNAMED | 1,986 | 75 km |
| 1988 | UNNAMED | 1,909 | 69 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 7°F (-14°C) | 0.8 in | Coldest |
| February | 12°F (-11°C) | 0.6 in | Driest |
| March | 24°F (-4°C) | 1.1 in | |
| April | 39°F (4°C) | 2.1 in | |
| May | 53°F (12°C) | 2.8 in | |
| June | 63°F (17°C) | 3.9 in | Wettest |
| July | 69°F (20°C) | 3.9 in | Warmest |
| August | 66°F (19°C) | 3.4 in | |
| September | 56°F (13°C) | 2.8 in | |
| October | 44°F (7°C) | 2.4 in | |
| November | 27°F (-3°C) | 1.1 in | |
| December | 11°F (-12°C) | 0.9 in |
Cass Lake has a seasonal temperature swing of 61°F / from 7°F in January to 69°F in July. Total annual precipitation is 25.7 inches, with June being the wettest month (3.9") and February the driest (0.6").