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Weather & Climate in Ephraim, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ephraim has a cool climate with an average annual temperature of 45°F (7°C). Winters average 19°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 31.0 inches. The area receives 61.6 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 604 feet.
Temperature
19°F Jan (-7°C)
69°F Jul (20°C)
| Annual Average | 44.7°F |
| 17% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 604 ft (184 m) |
| Area | 7.2 sq mi (18.5 km²) |
| Population Density | 93/sq mi |
| Coordinates | 45.1677°N, 87.1726°W |
| Timezone | America/Chicago |
| County | Door County County |
| Nearest Airport | Menominee Regional (MNM) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 46.9 / 100 |
| Social Vulnerability | 45.3 / 100 |
| Community Resilience | 99.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| 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
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 | 58 km | 11 km |
| Jan 7, 2024 | 3 km NE of Mole Lake, Wisconsin | M2.5 | 144 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
79 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 4 fatalities, 26 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 19, 1968 | EF4 | 72 km | 21.8 mi | 2 |
| Aug 23, 1998 | EF3 | 21 km | 5.1 mi | 0 |
| May 28, 1991 | EF3 | 56 km | 10.0 mi | 0 |
| Jul 11, 1987 | EF3 | 86 km | 71.0 mi | 0 |
| Jul 4, 1986 | EF3 | 90 km | 24.3 mi | 0 |
| Jun 15, 2022 | EF2 | 91 km | 1.9 mi | 0 |
| Jul 19, 1992 | EF2 | 77 km | 0.2 mi | 0 |
| May 28, 1991 | EF2 | 76 km | 12.0 mi | 0 |
| Jun 8, 1985 | EF2 | 47 km | 5.0 mi | 0 |
| Jun 16, 1979 | EF2 | 94 km | 15.2 mi | 0 |
| Apr 21, 1974 | EF2 | 71 km | 2.7 mi | 0 |
| Apr 22, 1970 | EF2 | 74 km | 11.2 mi | 0 |
| Apr 22, 1970 | EF2 | 67 km | 9.5 mi | 0 |
| Jun 4, 1966 | EF2 | 94 km | 4.7 mi | 0 |
| Jun 4, 1966 | EF2 | 94 km | 4.9 mi | 0 |
| Jun 4, 1966 | EF2 | 96 km | 5.4 mi | 0 |
| Jun 9, 1964 | EF2 | 69 km | 3.0 mi | 0 |
| Jul 8, 1959 | EF2 | 94 km | 1.0 mi | 0 |
| May 17, 1958 | EF2 | 68 km | 4.7 mi | 0 |
| Jul 1, 1956 | EF2 | 51 km | 10.6 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
3 wildfires (100+ acres) recorded within 100 km. Largest: 21-SLBE LASSO LOOP BURN (1,906 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | 21-SLBE LASSO LOOP BURN | 1,906 | 98 km |
| 2019 | 19-SLBE PETERSON | 605 | 99 km |
| 2019 | DUTCH MILL | 551 | 99 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.5 in | Coldest |
| February | 22°F (-6°C) | 1.1 in | Driest |
| March | 29°F (-1°C) | 1.8 in | |
| April | 40°F (4°C) | 2.4 in | |
| May | 51°F (11°C) | 3.0 in | |
| June | 62°F (16°C) | 3.4 in | |
| July | 69°F (20°C) | 3.0 in | Warmest |
| August | 67°F (20°C) | 3.3 in | |
| September | 60°F (15°C) | 3.4 in | Wettest |
| October | 50°F (10°C) | 2.6 in | |
| November | 39°F (4°C) | 2.4 in | |
| December | 28°F (-2°C) | 1.8 in |
Ephraim has a seasonal temperature swing of 49°F / from 19°F in January to 69°F in July. Total annual precipitation is 29.6 inches, with September being the wettest month (3.4") and February the driest (1.1").