December weather forecast
La Crosse, WI

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A scenic shot from above of La Crosse City in Wisconsin, with the view of the iconic Mississippi River and bridge
A scenic shot from above of La Crosse City in Wisconsin, with the view of the iconic Mississippi River and bridge

Weather in December

December in La Crosse sees a full return of winter, characterized by low temperatures and frequent snowfall. The average high of 27.5°F (-2.5°C) and low of 17.1°F (-8.3°C) establishes this month as one of the coldest of the year. Matching January, December has the shortest daylight hours, extending the length of the nights. Additionally, snowfall averages at 3.66" (93mm), blanketing the city in pristine white. Despite the challenging weather conditions, the festive ambiance and scenic beauty make December a unique time to experience this Wisconsin city.

Temperature

With the onset of December, La Crosse experiences a distinct temperature drop, with the average high-temperature reducing from November's icy 41.9°F (5.5°C) to a freezing cold 27.5°F (-2.5°C). The average low-temperature, in December, is a still subzero cold 17.1°F (-8.3°C).

Humidity

In La Crosse, the average relative humidity in December is 86%.

Rainfall

In La Crosse, in December, during 5.2 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 129.3 rainfall days, and 26.42" (671mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In La Crosse, in December, snow falls for 9.5 days, with typically accumulated 3.66" (93mm) of snow. Throughout the year, there are 48.3 snowfall days, and 20.2" (513mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:38 am and sunset at 4:37 pm CST.

Sunshine

In La Crosse, the average sunshine in December is 3.6h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 1 during December translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In La Crosse, 27.5°F (-2.5°C) is the average high-temperature and 17.1°F (-8.3°C) is the average low-temperature during December.

What is the average humidity in December?

In December, the average relative humidity is 86%.

How many days does it rain in December?

In La Crosse, during December, the rain falls for 5.2 days and regularly aggregates up to 1.42" (36mm) of precipitation.

How much does it snow in December?

In La Crosse, in December, snow falls for 9.5 days, with typically accumulated 3.66" (93mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

What is the average length of the day in December?

In December, the average day length is 8h and 59min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:19 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:37 pm CST.

How many hours of sunshine does La Crosse have in December?

In La Crosse, the average sunshine duration in December is 3.6h.

When is the lowest UV index in La Crosse?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in December?

In December, the average daily maximum UV index in La Crosse is 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
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
La Crosse, WI

Average temperature in December - La Crosse, WI
  • Average high temperature in December: 27.5°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 (21.6°F).

  • Average low temperature in December: 17.1°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).

Average pressure in December
La Crosse, WI

Average pressure in December - La Crosse, WI
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in December
La Crosse, WI

Average wind speed in December - La Crosse, WI
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in December
La Crosse, WI

Average humidity in December - La Crosse, WI
  • Average humidity in December: 86%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).

Average rainfall in December
La Crosse, WI

Average rainfall in December - La Crosse, WI
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is June (4.61").
The driest month (with the least rainfall) is January (0.91").

Average rainfall days in December
La Crosse, WI

Average rainfall days in December - La Crosse, WI
  • Average rainfall days in December: 5.2 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (3.2 days).

Average snowfall in December
La Crosse, WI

Average snowfall in December - La Crosse, WI
  • Average snowfall in December: 3.66"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
La Crosse, WI

Average snowfall days in December - La Crosse, WI
  • Average snowfall days in December: 9.5 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
La Crosse, WI

Average daylight in December / Average sunshine in December - La Crosse, WI
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 3h and 4min

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 18min).

Average sunshine days in December
La Crosse, WI

Average sunshine days in December - La Crosse, WI
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in December
La Crosse, WI

Average UV index in December - La Crosse, 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, February, November and December (UV index 1).

Average cloud cover in December
La Crosse, WI

Average cloud cover in December - La Crosse, WI
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in December
La Crosse, WI

Average visibility in December - La Crosse, WI
  • Average visibility in December: 5mi

The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).

La Crosse, Wisconsin, USA

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