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Weather & Climate in Summit Lake, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Summit Lake has a cool climate with an average annual temperature of 41°F (5°C). Winters average 12°F in January while summers reach 67°F in July. The area gets 276 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 29.4 inches (drier than the 38-inch national average). The area receives 53.6 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 1,699 feet.
Temperature
12°F Jan (-11°C)
67°F Jul (20°C)
| Annual Average | 41.4°F |
| 23% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 67°F (20°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 1,699 ft (518 m) |
| Area | 1.2 sq mi (3.2 km²) |
| Population Density | 121/sq mi |
| Coordinates | 45.3770°N, 89.1990°W |
| Timezone | America/Chicago |
| County | Langlade County County |
| Nearest Airport | Menominee Regional (MNM) 78 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 49.6 / 100 |
| Social Vulnerability | 47.9 / 100 |
| Community Resilience | 72.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | 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: M2.5.
| Jan 7, 2024 | 3 km NE of Mole Lake, Wisconsin | M2.5 | 24 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
195 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 6 fatalities, 69 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 31, 1977 | EF4 | 97 km | 31.8 mi | 0 |
| Aug 19, 1968 | EF4 | 94 km | 21.8 mi | 2 |
| Jun 25, 1950 | EF4 | 37 km | 13.1 mi | 2 |
| Apr 10, 2011 | EF3 | 61 km | 21.2 mi | 0 |
| Jun 7, 2007 | EF3 | 44 km | 40.0 mi | 0 |
| Apr 27, 1984 | EF3 | 58 km | 29.0 mi | 1 |
| Apr 27, 1984 | EF3 | 97 km | 32.0 mi | 0 |
| Sep 28, 1971 | EF3 | 48 km | 78.4 mi | 0 |
| May 3, 1955 | EF3 | 41 km | 6.8 mi | 0 |
| Jun 15, 2022 | EF2 | 71 km | 1.9 mi | 0 |
| Apr 10, 2011 | EF2 | 41 km | 12.0 mi | 0 |
| Jun 7, 2007 | EF2 | 70 km | 7.3 mi | 0 |
| Sep 30, 2002 | EF2 | 56 km | 3.0 mi | 0 |
| Jul 16, 1997 | EF2 | 36 km | 3.4 mi | 0 |
| Aug 7, 1996 | EF2 | 76 km | 2.5 mi | 0 |
| May 30, 1994 | EF2 | 29 km | 12.0 mi | 0 |
| Apr 26, 1994 | EF2 | 92 km | 12.0 mi | 0 |
| Jun 27, 1991 | EF2 | 75 km | 6.0 mi | 0 |
| May 8, 1988 | EF2 | 93 km | 13.0 mi | 0 |
| Jul 4, 1986 | EF2 | 52 km | 1.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
4 wildfires (100+ acres) recorded within 100 km. Largest: RILEY (1,254 acres, 2019).
| Year | Name | Acres Burned | Distance |
| 2019 | RILEY | 1,254 | 91 km |
| 1987 | FOULDS CREEK | 750 | 86 km |
| 2022 | UNNAMED | 702 | 90 km |
| 2022 | LDF MARSH BURN 2022 | 503 | 94 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 1.2 in | Coldest |
| February | 15°F (-9°C) | 0.9 in | Driest |
| March | 26°F (-3°C) | 1.9 in | |
| April | 40°F (4°C) | 2.6 in | |
| May | 53°F (12°C) | 3.4 in | |
| June | 61°F (16°C) | 3.9 in | |
| July | 67°F (20°C) | 3.6 in | Warmest |
| August | 64°F (18°C) | 4.2 in | |
| September | 56°F (13°C) | 4.6 in | Wettest |
| October | 44°F (7°C) | 2.6 in | |
| November | 30°F (-1°C) | 2.1 in | |
| December | 17°F (-9°C) | 1.6 in |
Summit Lake has a seasonal temperature swing of 55°F / from 12°F in January to 67°F in July. Total annual precipitation is 32.5 inches, with September being the wettest month (4.6") and February the driest (0.9").