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Weather & Climate in Oconto, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Oconto has a cool climate with an average annual temperature of 45°F (7°C). Winters average 18°F in January while summers reach 70°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 33.8 inches. The area receives 51.5 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 590 feet.
Temperature
18°F Jan (-8°C)
70°F Jul (21°C)
| Annual Average | 44.6°F |
| 17% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 590 ft (180 m) |
| Area | 7.3 sq mi (19.0 km²) |
| Population Density | 682/sq mi |
| Coordinates | 44.8927°N, 87.8685°W |
| Timezone | America/Chicago |
| County | Kewaunee County County |
| Nearest Airport | Menominee Regional (MNM) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 17.3 / 100 |
| Social Vulnerability | 14.1 / 100 |
| Community Resilience | 99.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Very 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
2 earthquakes (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 | 77 km | 11 km |
| Jan 7, 2024 | 3 km NE of Mole Lake, Wisconsin | M2.5 | 109 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
185 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 5 fatalities, 46 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 5, 1994 | EF4 | 68 km | 3.5 mi | 0 |
| Aug 19, 1968 | EF4 | 27 km | 21.8 mi | 2 |
| Jun 7, 2007 | EF3 | 90 km | 40.0 mi | 0 |
| Aug 23, 1998 | EF3 | 45 km | 5.1 mi | 0 |
| May 28, 1991 | EF3 | 66 km | 10.0 mi | 0 |
| Jul 11, 1987 | EF3 | 98 km | 71.0 mi | 0 |
| Jul 4, 1986 | EF3 | 94 km | 24.3 mi | 0 |
| Apr 27, 1984 | EF3 | 92 km | 32.0 mi | 0 |
| Dec 1, 1970 | EF3 | 88 km | 13.1 mi | 0 |
| Jun 26, 1969 | EF3 | 61 km | 15.3 mi | 0 |
| Jun 15, 2022 | EF2 | 64 km | 1.9 mi | 0 |
| Aug 6, 2013 | EF2 | 91 km | 13.1 mi | 0 |
| Apr 10, 2011 | EF2 | 78 km | 1.5 mi | 0 |
| Jul 5, 1994 | EF2 | 66 km | 1.0 mi | 0 |
| May 28, 1991 | EF2 | 90 km | 12.0 mi | 0 |
| Jun 8, 1985 | EF2 | 33 km | 5.0 mi | 0 |
| May 6, 1982 | EF2 | 81 km | 9.0 mi | 0 |
| Jun 7, 1980 | EF2 | 92 km | 0.2 mi | 0 |
| Aug 9, 1979 | EF2 | 98 km | 0.1 mi | 1 |
| Jun 16, 1979 | EF2 | 34 km | 15.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.7 in | Coldest |
| February | 20°F (-7°C) | 1.1 in | Driest |
| March | 30°F (-1°C) | 2.2 in | |
| April | 43°F (6°C) | 2.6 in | |
| May | 55°F (13°C) | 3.4 in | |
| June | 64°F (18°C) | 3.5 in | |
| July | 70°F (21°C) | 3.6 in | Warmest, Wettest |
| August | 67°F (20°C) | 3.3 in | |
| September | 59°F (15°C) | 3.4 in | |
| October | 48°F (9°C) | 2.3 in | |
| November | 35°F (1°C) | 2.5 in | |
| December | 22°F (-6°C) | 1.7 in |
Oconto has a seasonal temperature swing of 52°F / from 18°F in January to 70°F in July. Total annual precipitation is 31.3 inches, with July being the wettest month (3.6") and February the driest (1.1").