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Weather & Climate in St. Nazianz, WI

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

St. Nazianz has a cool climate with an average annual temperature of 45°F (7°C). Winters average 20°F in January while summers reach 69°F in July. The area gets 270 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 31.5 inches. The area receives 34.6 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 870 feet.

Temperature

20°F Jan (-7°C) 69°F Jul (20°C)
Annual Average45.1°F
16% below US avg
January Average20°F (-7°C)
July Average69°F (20°C)
Sunny Days270 days/yr

Geography

Elevation870 ft (265 m)
Area0.8 sq mi (2.0 km²)
Population Density1,115/sq mi
Coordinates44.0073°N, 87.9248°W
TimezoneAmerica/Chicago
CountyManitowoc County County
Nearest AirportWittman Regional (OSH)
34 miles away

Precipitation & Snow

Annual Rainfall 31.5"
17% below US avg
Snowfall 34.6"
Wettest Month (Aug) 3.66"
Driest Month (Feb) 1.06"

Air Quality

AQI Median38.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score68.9 / 100
Social Vulnerability23.0 / 100
Community Resilience99.4 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Very Low
Earthquake Very Low
Wildfire Very Low
Flood Relatively Low
Hail Relatively High
Strong Wind Relatively Moderate
Heat Wave Relatively Moderate
Winter Weather Relatively Moderate
Lightning Relatively Moderate
Ice Storm Relatively Low
Drought No Rating
Cold Wave Relatively Moderate
Landslide Very Low
Coastal Flood Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.9.

Aug 2, 2024 38 km ESE of Sturgeon Bay, Wisconsin M2.9 108 km 11 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

310 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 16 fatalities, 277 injuries.

Date Rating Distance Path Fatalities
Jul 18, 1996 EF5 65 km 13.3 mi 0
Jul 5, 1994 EF4 31 km 3.5 mi 0
Apr 27, 1984 EF4 67 km 27.5 mi 1
Apr 4, 1981 EF4 68 km 1.8 mi 3
Apr 21, 1974 EF4 78 km 26.0 mi 0
Aug 22, 1964 EF4 70 km 2.2 mi 0
Apr 3, 1956 EF4 84 km 11.5 mi 7
Jun 23, 2004 EF3 94 km 33.3 mi 0
Jun 23, 2004 EF3 90 km 7.6 mi 1
Apr 27, 1984 EF3 98 km 32.0 mi 0
Jun 5, 1977 EF3 68 km 69.5 mi 0
Apr 21, 1974 EF3 84 km 22.2 mi 0
Apr 21, 1974 EF3 87 km 58.6 mi 2
Dec 1, 1970 EF3 68 km 13.1 mi 0
Jun 26, 1969 EF3 67 km 15.3 mi 0
Jun 25, 1950 EF3 82 km 0.1 mi 0
Aug 28, 2018 EF2 65 km 3.9 mi 0
Aug 6, 2013 EF2 80 km 13.1 mi 0
Apr 10, 2011 EF2 40 km 1.5 mi 0
Jun 1, 2000 EF2 88 km 17.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

6 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (1,524 acres, 2006).

Year Name Acres Burned Distance
2006 UNNAMED 1,524 78 km
2010 RX BURN 1,236 77 km
1994 SOMMERS 938 78 km
1988 PEACHY RD 812 80 km
2006 UNNAMED 612 77 km
2007 TOWER RD 2 592 80 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 20°F (-7°C) 1.3 in Coldest
February 21°F (-6°C) 1.1 in Driest
March 31°F (-0°C) 1.9 in
April 43°F (6°C) 2.8 in
May 55°F (13°C) 3.0 in
June 64°F (18°C) 3.5 in
July 69°F (20°C) 3.4 in Warmest
August 68°F (20°C) 3.7 in Wettest
September 60°F (15°C) 3.6 in
October 49°F (9°C) 2.5 in
November 35°F (2°C) 2.3 in
December 23°F (-5°C) 1.6 in

St. Nazianz has a seasonal temperature swing of 49°F / from 20°F in January to 69°F in July. Total annual precipitation is 30.5 inches, with August being the wettest month (3.7") and February the driest (1.1").

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