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Weather & Climate in Algoma, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Algoma has a cool climate with an average annual temperature of 44°F (7°C). Winters average 18°F in January while summers reach 68°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 30.1 inches (drier than the 38-inch national average). The area receives 52.7 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 601 feet.
Temperature
18°F Jan (-8°C)
68°F Jul (20°C)
| Annual Average | 44.1°F |
| 18% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 601 ft (183 m) |
| Area | 2.5 sq mi (6.4 km²) |
| Population Density | 1,309/sq mi |
| Coordinates | 44.6057°N, 87.4480°W |
| Timezone | America/Chicago |
| County | Kewaunee County County |
| Nearest Airport | Green Bay/Austin Straubel International (GRB) 35 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
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 | 41 km | 11 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
154 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 7 fatalities, 53 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 5, 1994 | EF4 | 47 km | 3.5 mi | 0 |
| Aug 19, 1968 | EF4 | 73 km | 21.8 mi | 2 |
| Apr 3, 1956 | EF4 | 98 km | 50.3 mi | 1 |
| Aug 23, 1998 | EF3 | 47 km | 5.1 mi | 0 |
| May 28, 1991 | EF3 | 100 km | 10.0 mi | 0 |
| Jun 26, 1969 | EF3 | 76 km | 15.3 mi | 0 |
| Apr 10, 2011 | EF2 | 77 km | 1.5 mi | 0 |
| Jul 18, 1996 | EF2 | 98 km | 6.4 mi | 1 |
| Jul 5, 1994 | EF2 | 44 km | 1.0 mi | 0 |
| Jun 8, 1985 | EF2 | 22 km | 5.0 mi | 0 |
| May 6, 1982 | EF2 | 94 km | 9.0 mi | 0 |
| Apr 4, 1981 | EF2 | 91 km | 0.1 mi | 0 |
| Jun 7, 1980 | EF2 | 69 km | 0.2 mi | 0 |
| Aug 9, 1979 | EF2 | 90 km | 0.1 mi | 1 |
| Jun 16, 1979 | EF2 | 74 km | 15.2 mi | 0 |
| Apr 21, 1974 | EF2 | 90 km | 2.7 mi | 0 |
| Apr 22, 1970 | EF2 | 52 km | 3.6 mi | 0 |
| Apr 22, 1970 | EF2 | 14 km | 11.2 mi | 0 |
| Apr 22, 1970 | EF2 | 1 km | 9.5 mi | 0 |
| Apr 22, 1970 | EF2 | 49 km | 7.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.5 in | Coldest |
| February | 24°F (-4°C) | 1.2 in | Driest |
| March | 32°F (-0°C) | 2.0 in | |
| April | 42°F (5°C) | 2.8 in | |
| May | 52°F (11°C) | 3.0 in | |
| June | 62°F (17°C) | 3.3 in | |
| July | 68°F (20°C) | 3.1 in | Warmest |
| August | 68°F (20°C) | 3.4 in | |
| September | 60°F (16°C) | 3.5 in | Wettest |
| October | 49°F (10°C) | 2.5 in | |
| November | 37°F (3°C) | 2.3 in | |
| December | 26°F (-3°C) | 1.8 in |
Algoma has a seasonal temperature swing of 50°F / from 18°F in January to 68°F in July. Total annual precipitation is 30.4 inches, with September being the wettest month (3.5") and February the driest (1.2").