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South Wayne, WI

Full City Profile · Wisconsin · Green County County

3.0 /5.0
B Good
475 Population 572/sq mi density
$64,028 Median Income $35,386 per capita
$123,000 Home Value $227,313 Zillow
$810 Median Rent 28.2% income on rent
47°F Avg Temperature 260 sunny days/yr
166 Violent Crime/100K 2,446 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.0 / 5.0
$64,028 median income, 3.8% unemployment
A+
Affordability
5.0 / 5.0
$123,000 home value, $810/mo rent
F
Safety
1.0 / 5.0
166 violent crimes/100K
C
Education
2.1 / 5.0
14.2% bachelor's degree or higher
South Wayne experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 19°F in January while summers reach 73°F in July. The area gets 260 sunny days per year. Annual precipitation totals 39.7 inches. The area receives 41.5 inches of snow annually. Air quality is rated Good with a median AQI of 38.

Temperature

19°F Jan (-7°C) 73°F Jul (23°C)
Annual Average47.3°F
12% below US avg
January Average19°F (-7°C)
July Average73°F (23°C)
Sunny Days260 days/yr

Geography

Elevation842 ft (257 m)
Area0.8 sq mi (2.1 km²)
Population Density572/sq mi
Coordinates42.5676°N, 89.8761°W
TimezoneAmerica/Chicago
CountyGreen County County
Nearest AirportSouthern Wisconsin Regional (JVL)
43 miles away

Precipitation & Snow

Annual Rainfall 39.7"
5% above US avg
Snowfall 41.5"
Wettest Month (Aug) 4.17"
Driest Month (Jan) 1.10"

Air Quality

AQI Median38.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score46.4 / 100
Social Vulnerability17.8 / 100
Community Resilience81.9 / 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 Low
Lightning Relatively Low
Ice Storm Relatively Low
Drought Relatively Low
Cold Wave Relatively Moderate
Landslide Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

6 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.2. Most recent: M3.1 on Jul 15, 2024.

Jun 28, 2004 12 km NW of Dayton, Illinois M4.2 147 km
Feb 10, 2010 2 km NW of Lily Lake, Illinois M3.8 132 km
Sep 2, 1999 8 km W of Amboy, Illinois M3.5 101 km
Jul 15, 2024 2 km WNW of Somonauk, Illinois M3.1 141 km
Mar 25, 2015 3 km WNW of Lake in the Hills, Illinois M2.9 131 km
Jun 10, 2013 4 km NNE of Virgil, Illinois M2.6 130 km
Source: USGS (M2.5+, 1990–2025)

Tornado History

534 tornadoes (EF0+) within 100 km since 1950. Strongest: EF5. Total: 46 fatalities, 998 injuries.

Date Rating Distance Fatalities
Jun 7, 1984 EF5 46 km 9
Apr 9, 2015 EF4 93 km 2
Jul 3, 1983 EF4 49 km 0
Mar 29, 1981 EF4 99 km 0
Apr 21, 1967 EF4 88 km 24
Aug 7, 2021 EF3 93 km 0
Jun 16, 2014 EF3 55 km 0
Jan 7, 2008 EF3 88 km 0
Aug 18, 2005 EF3 54 km 1
Jun 19, 1993 EF3 75 km 0
Jun 17, 1992 EF3 45 km 0
May 8, 1988 EF3 29 km 0
Aug 5, 1979 EF3 66 km 0
Jun 4, 1975 EF3 91 km 0
Jun 20, 1974 EF3 73 km 1
Sep 9, 1970 EF3 66 km 0
Aug 2, 1967 EF3 72 km 2
Apr 16, 1967 EF3 7 km 0
Jan 24, 1967 EF3 42 km 0
Jan 24, 1967 EF3 59 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

3 wildfires (100+ acres) within 100 km. Largest: 2018 BADGER RX BURNS (659 ac, 2018).

Year Name Acres Distance
2018 2018 BADGER RX BURNS 659 90 km
2019 2019 BADGER RX BURNS 627 90 km
2009 COLD SPRINGS 552 23 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 19°F (-7°C) 1.1 in Coldest, Driest
February 22°F (-6°C) 1.1 in
March 34°F (1°C) 2.3 in
April 47°F (8°C) 3.2 in
May 58°F (15°C) 3.5 in
June 68°F (20°C) 4.1 in
July 73°F (23°C) 3.9 in Warmest
August 69°F (21°C) 4.2 in Wettest
September 62°F (16°C) 3.9 in
October 50°F (10°C) 2.5 in
November 36°F (2°C) 2.3 in
December 23°F (-5°C) 1.7 in

South Wayne has a seasonal temperature swing of 54°F / from 19°F in January to 73°F in July. Total annual precipitation is 33.9 inches, with August being the wettest month (4.2") and January the driest (1.1").

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