Weather & Climate in Cassville, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Cassville experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 19°F in January while summers reach 74°F in July. Annual precipitation totals 37.3 inches. The area receives 34.4 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 633 feet.
Temperature
19°F Jan (-7°C)
74°F Jul (23°C)
| Annual Average | 48.5°F |
| 10% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 633 ft (193 m) |
| Area | 1.0 sq mi (2.7 km²) |
| Population Density | 666/sq mi |
| Coordinates | 42.7152°N, 90.9891°W |
| Timezone | America/Chicago |
| County | Dubuque County County |
| Nearest Airport | Dubuque Regional (DBQ) 26 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 63.6 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 97.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
491 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 18 fatalities, 496 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 7, 1984 | EF5 | 87 km | 36.0 mi | 9 |
| May 15, 1968 | EF5 | 77 km | 13.1 mi | 5 |
| Mar 13, 1990 | EF4 | 65 km | 19.0 mi | 0 |
| Jul 3, 1983 | EF4 | 76 km | 0.5 mi | 0 |
| Aug 12, 1974 | EF4 | 57 km | 5.0 mi | 0 |
| Apr 11, 1965 | EF4 | 96 km | 91.5 mi | 1 |
| Apr 30, 1954 | EF4 | 93 km | 80.4 mi | 0 |
| Aug 7, 2021 | EF3 | 51 km | 9.4 mi | 0 |
| May 25, 2008 | EF3 | 85 km | 32.0 mi | 0 |
| Jul 27, 1995 | EF3 | 58 km | 20.0 mi | 0 |
| Jun 19, 1993 | EF3 | 49 km | 14.0 mi | 0 |
| Jun 19, 1993 | EF3 | 55 km | 9.0 mi | 0 |
| Jul 13, 1992 | EF3 | 61 km | 5.0 mi | 0 |
| May 8, 1988 | EF3 | 64 km | 16.0 mi | 0 |
| May 30, 1985 | EF3 | 47 km | 34.0 mi | 2 |
| Jul 12, 1971 | EF3 | 63 km | 0.1 mi | 0 |
| Jun 24, 1971 | EF3 | 78 km | 0.1 mi | 1 |
| Sep 9, 1970 | EF3 | 35 km | 4.7 mi | 0 |
| Apr 16, 1967 | EF3 | 89 km | 27.8 mi | 0 |
| Sep 3, 1964 | EF3 | 61 km | 17.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.3 in | Coldest |
| February | 23°F (-5°C) | 1.2 in | Driest |
| March | 36°F (2°C) | 2.0 in | |
| April | 49°F (9°C) | 3.7 in | |
| May | 61°F (16°C) | 4.6 in | |
| June | 70°F (21°C) | 5.7 in | Wettest |
| July | 74°F (23°C) | 4.9 in | Warmest |
| August | 72°F (22°C) | 3.6 in | |
| September | 64°F (18°C) | 3.8 in | |
| October | 52°F (11°C) | 2.8 in | |
| November | 38°F (3°C) | 2.1 in | |
| December | 25°F (-4°C) | 1.7 in |
Cassville has a seasonal temperature swing of 55°F / from 19°F in January to 74°F in July. Total annual precipitation is 37.3 inches, with June being the wettest month (5.7") and February the driest (1.2").