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Weather & Climate in Berlin, WI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Berlin has a cool climate with an average annual temperature of 45°F (7°C). Winters average 17°F in January while summers reach 71°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 35.2 inches. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 771 feet.
Temperature
17°F Jan (-8°C)
71°F Jul (21°C)
| Annual Average | 45.0°F |
| 17% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 71°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 771 ft (235 m) |
| Area | 6.4 sq mi (16.5 km²) |
| Population Density | 933/sq mi |
| Coordinates | 43.9697°N, 88.9500°W |
| Timezone | America/Chicago |
| County | Green Lake County County |
| Nearest Airport | Wittman Regional (OSH) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 58.1 / 100 |
| Social Vulnerability | 86.1 / 100 |
| Community Resilience | 77.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
518 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 29 fatalities, 440 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 18, 1996 | EF5 | 40 km | 13.3 mi | 0 |
| Jul 5, 1994 | EF4 | 97 km | 3.5 mi | 0 |
| Apr 27, 1984 | EF4 | 20 km | 27.5 mi | 1 |
| Apr 4, 1981 | EF4 | 85 km | 1.8 mi | 3 |
| Apr 21, 1974 | EF4 | 26 km | 26.0 mi | 0 |
| Apr 19, 1957 | EF4 | 99 km | 21.1 mi | 1 |
| Apr 3, 1956 | EF4 | 5 km | 11.5 mi | 7 |
| Sep 26, 1951 | EF4 | 49 km | 26.4 mi | 6 |
| Sep 26, 1951 | EF4 | 61 km | 9.0 mi | 1 |
| Jun 23, 2004 | EF3 | 29 km | 33.3 mi | 0 |
| Jun 23, 2004 | EF3 | 33 km | 7.6 mi | 1 |
| Aug 27, 1994 | EF3 | 79 km | 10.5 mi | 2 |
| Aug 29, 1992 | EF3 | 47 km | 28.0 mi | 1 |
| Jun 8, 1984 | EF3 | 62 km | 29.0 mi | 0 |
| Apr 27, 1984 | EF3 | 62 km | 32.0 mi | 0 |
| Jun 5, 1980 | EF3 | 95 km | 10.7 mi | 0 |
| Apr 7, 1980 | EF3 | 55 km | 1.2 mi | 0 |
| Jun 5, 1977 | EF3 | 24 km | 69.5 mi | 0 |
| Jun 4, 1975 | EF3 | 85 km | 2.3 mi | 0 |
| Apr 21, 1974 | EF3 | 49 km | 22.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: COTTONVILLE INCIDENT (3,466 acres, 2005).
| Year | Name | Acres Burned | Distance |
| 2005 | COTTONVILLE INCIDENT | 3,466 | 65 km |
| 2024 | 2024 DOD HARDWOOD RANGE RX | 2,717 | 95 km |
| 1994 | BIG BURN | 2,248 | 100 km |
| 2023 | 2023 RX | 1,992 | 95 km |
| 2004 | POOL ONE NORTH | 1,576 | 97 km |
| 2006 | UNNAMED | 1,524 | 56 km |
| 1998 | UNNAMED | 1,297 | 100 km |
| 2010 | RX BURN | 1,236 | 57 km |
| 2021 | 2021 DOD HARDWOOD RANGE RX | 987 | 96 km |
| 1994 | SOMMERS | 938 | 50 km |
| 1998 | PR 17 | 896 | 98 km |
| 2007 | UNNAMED | 875 | 96 km |
| 2009 | UNNAMED | 867 | 100 km |
| 1988 | PEACHY RD | 812 | 53 km |
| 2006 | PR 17 RX FIRE | 701 | 99 km |
| 2018 | 2018 BADGER RX BURNS | 659 | 92 km |
| 2005 | UNNAMED | 657 | 100 km |
| 2003 | PR 17 | 632 | 100 km |
| 2019 | 2019 BADGER RX BURNS | 627 | 92 km |
| 2006 | UNNAMED | 612 | 48 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 1.2 in | Coldest |
| February | 21°F (-6°C) | 1.1 in | Driest |
| March | 32°F (-0°C) | 2.1 in | |
| April | 45°F (7°C) | 3.0 in | |
| May | 58°F (14°C) | 3.3 in | |
| June | 67°F (19°C) | 3.6 in | |
| July | 71°F (21°C) | 3.6 in | Warmest |
| August | 69°F (20°C) | 3.8 in | |
| September | 60°F (16°C) | 3.9 in | Wettest |
| October | 49°F (9°C) | 2.4 in | |
| November | 35°F (1°C) | 2.2 in | |
| December | 21°F (-6°C) | 1.5 in |
Berlin has a seasonal temperature swing of 54°F / from 17°F in January to 71°F in July. Total annual precipitation is 31.6 inches, with September being the wettest month (3.9") and February the driest (1.1").