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December Weather in La Crosse, United States

Last updated: June 24, 2025

In December, the average temperature in La Crosse, United States hovers around 2°C (36°F), with extreme lows of -15°C (6°F) and highs reaching up to 23°C (74°F). Expect about 29 mm (1.1 in) of precipitation spread over approximately 2 days, contributing to an average humidity of 83%.

December Temperature in La Crosse

In December in La Crosse, the average temperature is 2°C (36°F). Maximums can reach 23°C (74°F), and minimums can drop as low as -15°C (6°F). Travelers should be prepared for a wide range of weather conditions, from chilly temperatures to mild days.

December Weather in La Crosse: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in La Crosse, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Crosse, December typically has an average temperature of 2°C (36°F), with highs reaching up to 23°C (74°F) and lows dropping to around -15°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec313245536477817772554436
Data source: Temperature data for La Crosse generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in La Crosse

In La Crosse in December, the precipitation amount is 29 mm (1.1 in) over the course of 2 days.

December Precipitation Trends in La Crosse

The chart displays monthly precipitation patterns in La Crosse, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In La Crosse, December typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec2420694413856677258672529
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in La Crosse

In La Crosse in December, humidity is 83%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket, making travel uncomfortable as the chill seeps into your bones and the moisture clings to your clothing, forcing you to constantly seek warmth and shelter.

December Average Humidity in La Crosse

This chart illustrates the average monthly humidity levels in La Crosse, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in La Crosse is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Crosse

In La Crosse in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in La Crosse, you can check the information here.

Maximum UV Index Levels in La Crosse for December

The chart shows the monthly maximum UV Index (UVI) for La Crosse in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in La Crosse typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4579101111109743
Data source: La Crosse December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in La Crosse Compares to Other Months

Weather in La Crosse varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in La Crosse, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in La Crosse, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)24 mm (0.9 inches)74%moderate
February Weather0°C (33°F)20 mm (0.8 inches)78%moderate
March Weather7°C (46°F)69 mm (2.7 inches)67%high
April Weather12°C (54°F)44 mm (1.7 inches)70%very high
May Weather18°C (64°F)138 mm (5.4 inches)82%very high
June Weather25°C (77°F)56 mm (2.2 inches)81%extreme
July Weather27°C (81°F)67 mm (2.6 inches)80%extreme
August Weather25°C (78°F)72 mm (2.8 inches)80%very high
September Weather22°C (72°F)58 mm (2.3 inches)73%very high
October Weather13°C (56°F)67 mm (2.6 inches)71%high
November Weather7°C (44°F)25 mm (1.0 inches)79%moderate
December Weather2°C (36°F)29 mm (1.1 inches)83%moderate

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