Weather & Climate in Waupun, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Waupun experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 19°F in January while summers reach 71°F in July. Annual precipitation totals 28.4 inches (drier than the 38-inch national average). The area receives 43.3 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 38. 81% of days have good air quality. The city sits at an elevation of 903 feet.
Temperature
19°F Jan (-7°C)
71°F Jul (22°C)
| Annual Average | 46.5°F |
| 14% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 71°F (22°C) |
Geography
| Elevation | 903 ft (275 m) |
| Area | 4.4 sq mi (11.5 km²) |
| Population Density | 2,408/sq mi |
| Coordinates | 43.6315°N, 88.7375°W |
| Timezone | America/Chicago |
| County | Dodge County County |
| Nearest Airport | Wittman Regional (OSH) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
| Good Days % | 81.1% |
| Unhealthy Days | 0 |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 69.9 / 100 |
| Social Vulnerability | 19.4 / 100 |
| Community Resilience | 92.8 / 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 Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
552 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 33 fatalities, 643 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 18, 1996 | EF5 | 12 km | 13.3 mi | 0 |
| Apr 27, 1984 | EF4 | 78 km | 6.5 mi | 1 |
| Apr 27, 1984 | EF4 | 50 km | 27.5 mi | 1 |
| Apr 4, 1981 | EF4 | 49 km | 1.8 mi | 3 |
| Apr 21, 1974 | EF4 | 15 km | 26.0 mi | 0 |
| Aug 22, 1964 | EF4 | 72 km | 2.2 mi | 0 |
| Apr 3, 1956 | EF4 | 38 km | 11.5 mi | 7 |
| Sep 26, 1951 | EF4 | 90 km | 26.4 mi | 6 |
| Sep 26, 1951 | EF4 | 45 km | 9.0 mi | 1 |
| Jun 16, 2014 | EF3 | 96 km | 1.0 mi | 0 |
| Aug 18, 2005 | EF3 | 97 km | 18.6 mi | 1 |
| Jun 23, 2004 | EF3 | 26 km | 33.3 mi | 0 |
| Jun 23, 2004 | EF3 | 18 km | 7.6 mi | 1 |
| Aug 29, 1992 | EF3 | 80 km | 28.0 mi | 1 |
| Jun 8, 1984 | EF3 | 45 km | 29.0 mi | 0 |
| Jun 5, 1980 | EF3 | 56 km | 10.7 mi | 0 |
| Apr 7, 1980 | EF3 | 25 km | 1.2 mi | 0 |
| Jun 5, 1977 | EF3 | 21 km | 69.5 mi | 0 |
| Jun 4, 1975 | EF3 | 60 km | 2.3 mi | 0 |
| Apr 21, 1974 | EF3 | 15 km | 58.6 mi | 2 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
10 wildfires (100+ acres) recorded within 100 km. Largest: COTTONVILLE INCIDENT (3,466 acres, 2005).
| Year | Name | Acres Burned | Distance |
| 2005 | COTTONVILLE INCIDENT | 3,466 | 96 km |
| 2006 | UNNAMED | 1,524 | 15 km |
| 2010 | RX BURN | 1,236 | 16 km |
| 1994 | SOMMERS | 938 | 9 km |
| 1988 | PEACHY RD | 812 | 12 km |
| 2018 | 2018 BADGER RX BURNS | 659 | 87 km |
| 2019 | 2019 BADGER RX BURNS | 627 | 86 km |
| 2006 | UNNAMED | 612 | 7 km |
| 2007 | TOWER RD 2 | 592 | 12 km |
| 2024 | RX-HWY Y - SOUTH | 553 | 74 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 0.7 in | Coldest |
| February | 22°F (-6°C) | 0.7 in | Driest |
| March | 33°F (1°C) | 1.7 in | |
| April | 45°F (7°C) | 2.8 in | |
| May | 57°F (14°C) | 3.3 in | |
| June | 67°F (20°C) | 4.1 in | Wettest |
| July | 71°F (22°C) | 3.4 in | Warmest |
| August | 69°F (21°C) | 3.5 in | |
| September | 62°F (17°C) | 2.9 in | |
| October | 50°F (10°C) | 2.5 in | |
| November | 37°F (3°C) | 1.8 in | |
| December | 25°F (-4°C) | 0.9 in |
Waupun has a seasonal temperature swing of 52°F / from 19°F in January to 71°F in July. Total annual precipitation is 28.4 inches, with June being the wettest month (4.1") and February the driest (0.7").