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Lake Geneva city, Wisconsin

Official LSAD Designation: Lake Geneva city • Census GEOID: 5541450 • Walworth County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Lake Geneva city.

Reference Weather Station: LAKE GENEVA WWTP, WI US (ID: USC00474457) • Located 1.3 miles from community center • Elevation: 257.9 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 30.0° 15.1° 22.6° 1.90"
February 34.5° 17.0° 25.7° 1.89"
March 45.2° 26.3° 35.7° 2.29"
April 59.1° 37.2° 48.1° 3.45"
May 71.6° 48.4° 60.0° 4.12"
June 81.1° 58.1° 69.6° 4.81"
July 85.5° 63.1° 74.3° 3.72"
August 83.4° 61.3° 72.3° 3.32"
September 76.3° 53.8° 65.1° 3.65"
October 62.7° 42.2° 52.4° 3.01"
November 47.4° 30.8° 39.1° 2.48"
December 35.1° 20.5° 27.8° 2.31"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station LAKE GENEVA WWTP, WI US (ID: USC00474457) • 1.3 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at LAKE GENEVA WWTP, WI US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 34.0 41.5 49.0 56.5 64.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2023: Annual mean 49.2°F 2024: Annual mean 50.1°F 2025: Annual mean 47.4°F 2023: Annual mean of daily highs 59.5°F 2024: Annual mean of daily highs 60.7°F 2025: Annual mean of daily highs 58.3°F 2023: Annual mean of daily lows 38.8°F 2024: Annual mean of daily lows 39.6°F 2025: Annual mean of daily lows 36.4°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 49.2 59.5 38.8
2024 50.1 60.7 39.6
2025 47.4 58.3 36.4
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.