All Countries
Weather & Climate in Mazomanie, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mazomanie experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 18°F in January while summers reach 70°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 35.8 inches. The area receives 30.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 799 feet.
Temperature
18°F Jan (-8°C)
70°F Jul (21°C)
| Annual Average | 45.8°F |
| 15% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 799 ft (244 m) |
| Area | 1.9 sq mi (4.8 km²) |
| Population Density | 963/sq mi |
| Coordinates | 43.1725°N, 89.7953°W |
| Timezone | America/Chicago |
| County | Sauk County County |
| Nearest Airport | Tri-County Regional (LNR) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 72.1 / 100 |
| Social Vulnerability | 21.9 / 100 |
| Community Resilience | 82.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
520 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 24 fatalities, 549 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 7, 1984 | EF5 | 27 km | 36.0 mi | 9 |
| Jul 3, 1983 | EF4 | 35 km | 0.5 mi | 0 |
| Apr 19, 1957 | EF4 | 84 km | 21.1 mi | 1 |
| Sep 26, 1951 | EF4 | 55 km | 9.0 mi | 1 |
| Aug 7, 2021 | EF3 | 75 km | 9.4 mi | 0 |
| Jun 16, 2014 | EF3 | 27 km | 1.0 mi | 0 |
| Aug 18, 2005 | EF3 | 41 km | 18.6 mi | 1 |
| Jun 23, 2004 | EF3 | 88 km | 7.6 mi | 1 |
| Jun 23, 2004 | EF3 | 87 km | 33.3 mi | 0 |
| Jun 17, 1992 | EF3 | 39 km | 16.0 mi | 0 |
| May 8, 1988 | EF3 | 75 km | 16.0 mi | 0 |
| Jun 8, 1984 | EF3 | 55 km | 29.0 mi | 0 |
| Jun 5, 1980 | EF3 | 83 km | 10.7 mi | 0 |
| Apr 7, 1980 | EF3 | 75 km | 1.2 mi | 0 |
| Jun 4, 1975 | EF3 | 46 km | 2.3 mi | 0 |
| Apr 21, 1974 | EF3 | 94 km | 22.2 mi | 0 |
| Apr 21, 1974 | EF3 | 92 km | 58.6 mi | 2 |
| Aug 2, 1967 | EF3 | 28 km | 0.1 mi | 2 |
| Apr 16, 1967 | EF3 | 73 km | 27.8 mi | 0 |
| Jan 24, 1967 | EF3 | 73 km | 24.9 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: PEACHY RD (812 acres, 1988).
| Year | Name | Acres Burned | Distance |
| 1988 | PEACHY RD | 812 | 99 km |
| 2018 | 2018 BADGER RX BURNS | 659 | 23 km |
| 2019 | 2019 BADGER RX BURNS | 627 | 22 km |
| 2007 | TOWER RD 2 | 592 | 99 km |
| 2024 | RX-HWY Y - SOUTH | 553 | 88 km |
| 2009 | COLD SPRINGS | 552 | 57 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.1 in | Coldest |
| February | 21°F (-6°C) | 1.0 in | Driest |
| March | 33°F (0°C) | 2.1 in | |
| April | 45°F (7°C) | 2.8 in | |
| May | 58°F (14°C) | 3.2 in | |
| June | 67°F (19°C) | 3.8 in | |
| July | 70°F (21°C) | 3.8 in | Warmest |
| August | 69°F (20°C) | 4.0 in | Wettest |
| September | 61°F (16°C) | 3.8 in | |
| October | 49°F (10°C) | 2.3 in | |
| November | 35°F (2°C) | 2.0 in | |
| December | 22°F (-5°C) | 1.5 in |
Mazomanie has a seasonal temperature swing of 53°F / from 18°F in January to 70°F in July. Total annual precipitation is 31.5 inches, with August being the wettest month (4.0") and February the driest (1.0").