December weather forecast
Lake Geneva, WI

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Weather in December

December, the first month of the winter in Lake Geneva, is also a subzero cold month, with an average temperature varying between 21.7°F (-5.7°C) and 31.8°F (-0.1°C).

Temperature

The onset of December comes with a shift in the average high-temperature, falling from a chilly 43.7°F (6.5°C) in November to a freezing cold 31.8°F (-0.1°C). Throughout December, an average low-temperature of 21.7°F (-5.7°C) is experienced.

Humidity

In Lake Geneva, the average relative humidity in December is 83%.

Rainfall

The month with the least rainfall is December, when the rain falls for 5.7 days and typically collects 1.14" (29mm) of precipitation.

Snowfall

Months with snowfall in Lake Geneva, Wisconsin, are January through May, October through December. In Lake Geneva, during December, snow falls for 9.3 days and regularly aggregates up to 2.83" (72mm) of snow. In Lake Geneva, during the entire year, snow falls for 44 days and aggregates up to 17.36" (441mm) of snow.

Daylight

December has the shortest days of the year in Lake Geneva, Wisconsin, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:21 pm. On the last day of December, in Lake Geneva, sunrise is at 7:23 am and sunset at 4:30 pm CST.

Sunshine

The average sunshine in December is 3.8h.

UV index

The months with the lowest UV index in Lake Geneva are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Lake Geneva in December?

December temperatures in Lake Geneva, Wisconsin, vary between a high-temperature of 31.8°F (-0.1°C) and a low-temperature of 21.7°F (-5.7°C).

What is the average humidity in December in Lake Geneva?

The average relative humidity in December in Lake Geneva, Wisconsin, is 83%.

What is the driest month in Lake Geneva?

December is the month with the least rainfall in Lake Geneva, Wisconsin. Rain falls for 5.7 days and accumulates 1.14" (29mm) of precipitation.

How much does it rain in Lake Geneva in December?

In Lake Geneva, in December, during 5.7 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

How much does it snow in Lake Geneva in December?

In December, it is snowing for 9.3 days. Throughout December, 2.83" (72mm) of snow is accumulated.

What is the month with the shortest days in Lake Geneva?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Lake Geneva.

What is the average length of the day in December in Lake Geneva?

In Lake Geneva, the average day length in December is 9h and 7min.

When are sunrise and sunset in December in Lake Geneva?

On the first day of December in Lake Geneva, Wisconsin, sunrise is at 7:04 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:30 pm CST.

How many hours of sunshine does Lake Geneva have in December?

The average sunshine duration in December in Lake Geneva, Wisconsin, is 3.8h.

What is the month with the lowest UV index in Lake Geneva?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Lake Geneva.

How high is the UV index in December in Lake Geneva?

In Lake Geneva, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Lake Geneva, WI

Average temperature in December - Lake Geneva, WI
  • Average high temperature in December: 31.8°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in December: 21.7°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

Average pressure in December
Lake Geneva, WI

Average pressure in December - Lake Geneva, WI
  • Average pressure in December: 30.09"Hg

The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Lake Geneva, WI

Average wind speed in December - Lake Geneva, WI
  • Average wind speed in December: 9.2mph

The windiest months (with the highest average wind speed) are February and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in December
Lake Geneva, WI

Average humidity in December - Lake Geneva, WI
  • Average humidity in December: 83%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).

Average rainfall in December
Lake Geneva, WI

Average rainfall in December - Lake Geneva, WI
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is December (1.14").

Average rainfall days in December
Lake Geneva, WI

Average rainfall days in December - Lake Geneva, WI
  • Average rainfall days in December: 5.7 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (3.1 days).

Average snowfall in December
Lake Geneva, WI

Average snowfall in December - Lake Geneva, WI
  • Average snowfall in December: 2.83"

The month with the highest snowfall is January (4.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Lake Geneva, WI

Average snowfall days in December - Lake Geneva, WI
  • Average snowfall days in December: 9.3 days

The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Lake Geneva, WI

Average daylight in December / Average sunshine in December - Lake Geneva, WI
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 3h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Lake Geneva, WI

Average sunshine days in December - Lake Geneva, WI
  • Average sunshine days in December: 18 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in December
Lake Geneva, WI

Average UV index in December - Lake Geneva, WI
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Lake Geneva, WI

Average cloud cover in December - Lake Geneva, WI
  • Average cloud cover in December: 61

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 34).

Average visibility in December
Lake Geneva, WI

Average visibility in December - Lake Geneva, WI
  • Average visibility in December: 6mi

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

Lake Geneva, Wisconsin, USA

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