Lake Geneva (WI) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Lake Geneva.
Climate overview of Lake Geneva
Lake Geneva, Wisconsin, United States of America, sees big temperature differences between seasons, with July peaking at 28°C (82°F) and January dropping to -2°C (28°F).
Lake Geneva sees a moderate amount of rain/snowfall, totalling around 990 mm (39 in) per year. It experiences warm summers and very cold winters, creating some seasonal variation. The most sunshine falls in July, with an average of 10.6 hours of daily sunshine.
Lake Geneva Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lake Geneva - and find the best time to visit.
Monthly Temperature in Lake Geneva
Visitors to Lake Geneva can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -2°C (28°F) during cooler months like January.
At night, you can expect temperatures ranging from 16°C (61°F) in July to around -11°C (12°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Lake Geneva
Generally, Lake Geneva experiences moderate precipitation patterns, averaging 990 mm (39 in) yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 133 mm (5.2 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month January brings less snowfall, with 43 mm (1.7 in) over 10 snowy days. For more details, please visit our Lake Geneva Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Lake Geneva
Seasonal changes in sunshine hours are quite dramatic in Lake Geneva. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Lake Geneva by Month
The relative humidity is high throughout the year in Lake Geneva.
The city experiences its highest humidity in December, reaching 76%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Lake Geneva
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and September
- Warmest weather: July and August
- Most sunshine: June and July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Lake Geneva
What is the best time to visit Lake Geneva?
May, July and September typically offer the most optimal weather in Lake Geneva. In contrast, January, February, March, November and December tend to have less optimal conditions. Lake Geneva has warm summers and very cold winters.
What temperatures can I expect in Lake Geneva?
Daytime highs range from -2°C (28°F) in January to 28°C (82°F) in July. Nighttime lows range from -11°C (12°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Lake Geneva get?
Annual rainfall is around 990 mm (39 in). June is the wettest month with 133 mm (5.2 in), while January is the driest with 43 mm (1.7 in).
How sunny is Lake Geneva?
Lake Geneva receives around 2,486 hours of sunshine per year. July is the sunniest month with 319 hours, while December is the cloudiest with just 104 hours. Overall, Lake Geneva enjoys abundant sunshine.
Lake Geneva 3-Day Forecast
Lake Geneva (WI) 3-Day Forecast
Lake Geneva on the map
Lake Geneva is highlighted - select any city to see its climate.
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