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Weather & Climate in Lewis, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lewis has a cool climate with an average annual temperature of 44°F (7°C). Winters average 13°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 32.9 inches. The area receives 61.2 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 1,056 feet.
Temperature
13°F Jan (-10°C)
70°F Jul (21°C)
| Annual Average | 44.1°F |
| 18% below US avg | |
| January Average | 13°F (-10°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 1,056 ft (322 m) |
| Area | 1.5 sq mi (3.8 km²) |
| Population Density | 120/sq mi |
| Coordinates | 45.7219°N, 92.3922°W |
| Timezone | America/Chicago |
| County | Burnett County County |
| Nearest Airport | Rice Lake Regional/Carl's Field (RIE) 36 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 49.3 / 100 |
| Social Vulnerability | 76.7 / 100 |
| Community Resilience | 28.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
249 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 31 fatalities, 238 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 4, 1958 | EF5 | 92 km | 33.7 mi | 21 |
| Jul 3, 1983 | EF4 | 91 km | 1.0 mi | 0 |
| Jul 30, 1977 | EF4 | 97 km | 19.0 mi | 0 |
| May 21, 1957 | EF4 | 40 km | 9.2 mi | 0 |
| May 16, 2017 | EF3 | 55 km | 82.5 mi | 1 |
| May 25, 2008 | EF3 | 79 km | 6.0 mi | 1 |
| Jun 18, 2001 | EF3 | 21 km | 34.0 mi | 2 |
| Jul 30, 1977 | EF3 | 63 km | 9.1 mi | 0 |
| Jun 30, 1968 | EF3 | 75 km | 0.1 mi | 0 |
| May 24, 1958 | EF3 | 77 km | 59.4 mi | 0 |
| Jun 23, 1952 | EF3 | 38 km | 18.2 mi | 2 |
| Jul 1, 2011 | EF2 | 77 km | 2.9 mi | 0 |
| Jun 17, 2010 | EF2 | 37 km | 7.8 mi | 0 |
| Sep 21, 2005 | EF2 | 95 km | 2.0 mi | 0 |
| Sep 18, 1997 | EF2 | 92 km | 17.0 mi | 0 |
| Jul 21, 1995 | EF2 | 97 km | 10.0 mi | 0 |
| Apr 26, 1994 | EF2 | 82 km | 5.0 mi | 0 |
| Apr 26, 1994 | EF2 | 69 km | 4.0 mi | 0 |
| Sep 11, 1990 | EF2 | 47 km | 1.5 mi | 0 |
| Sep 11, 1990 | EF2 | 66 km | 3.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
12 wildfires (100+ acres) recorded within 100 km. Largest: GERMANN ROAD FIRE (6,751 acres, 2013).
| Year | Name | Acres Burned | Distance |
| 2013 | GERMANN ROAD FIRE | 6,751 | 91 km |
| 2009 | UNNAMED | 2,904 | 76 km |
| 2024 | RX-86_FY23 | 2,187 | 23 km |
| 2000 | UNNAMED | 1,850 | 35 km |
| 1990 | UNNAMED | 1,371 | 62 km |
| 1985 | UNNAMED | 1,068 | 59 km |
| 1988 | UNNAMED | 1,059 | 73 km |
| 1999 | UNNAMED | 1,002 | 83 km |
| 2013 | CRANBERRY FIRE | 779 | 23 km |
| 2024 | RX-64 | 553 | 23 km |
| 2007 | BN COMPLEX 2 | 547 | 90 km |
| 1987 | UNNAMED | 514 | 95 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 13°F (-10°C) | 1.0 in | Coldest |
| February | 17°F (-9°C) | 0.8 in | Driest |
| March | 29°F (-2°C) | 1.7 in | |
| April | 44°F (6°C) | 2.4 in | |
| May | 56°F (14°C) | 3.5 in | |
| June | 65°F (18°C) | 4.1 in | |
| July | 70°F (21°C) | 3.9 in | Warmest |
| August | 67°F (19°C) | 4.3 in | Wettest |
| September | 58°F (14°C) | 3.7 in | |
| October | 46°F (8°C) | 2.5 in | |
| November | 30°F (-1°C) | 1.7 in | |
| December | 16°F (-9°C) | 1.2 in |
Lewis has a seasonal temperature swing of 57°F / from 13°F in January to 70°F in July. Total annual precipitation is 30.7 inches, with August being the wettest month (4.3") and February the driest (0.8").