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December Weather in Baraboo, United States

Last updated: June 24, 2025

In December, the average temperature in Baraboo, United States hovers around -2°C (28°F). Expect a chilly range, with minimums dipping as low as -23°C (-9°F) and maxing out at 18°C (65°F). Precipitation is moderate, with an average of 45 mm (1.8 in) spread over 6 days, contributing to an average humidity of 81%. Prepare for a blend of cold and wet conditions!

December Temperature in Baraboo

In December in Baraboo, the average temperature is -2°C (28°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures and dress accordingly for your travels.

December Weather in Baraboo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Baraboo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Baraboo, December typically has an average temperature of -2°C (28°F), with highs reaching up to 18°C (65°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec202135455970747164503628
Data source: Temperature data for Baraboo 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 Baraboo

In Baraboo in December, the precipitation amount is 45 mm (1.8 in) over the course of 6 days.

December Precipitation Trends in Baraboo

The chart displays monthly precipitation patterns in Baraboo, 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 Baraboo, December typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec45535890126112911071041094545
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Baraboo

In Baraboo in December, humidity is 81%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm and dry.

December Average Humidity in Baraboo

This chart illustrates the average monthly humidity levels in Baraboo, 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 Baraboo is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Baraboo

In Baraboo in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Baraboo, you can visit Hourly UV Index in Baraboo.

Maximum UV Index Levels in Baraboo for December

The chart shows the monthly maximum UV Index (UVI) for Baraboo 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 Baraboo typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Baraboo 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 Baraboo Compares to Other Months

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

This table compares monthly weather conditions in Baraboo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (21°F)45 mm (1.8 inches)85%low
February Weather-6°C (22°F)53 mm (2.1 inches)85%moderate
March Weather2°C (35°F)58 mm (2.3 inches)85%moderate
April Weather7°C (45°F)90 mm (3.6 inches)85%very high
May Weather15°C (59°F)126 mm (5.0 inches)78%very high
June Weather21°C (70°F)112 mm (4.4 inches)80%very high
July Weather23°C (74°F)91 mm (3.6 inches)78%very high
August Weather21°C (71°F)107 mm (4.2 inches)76%very high
September Weather18°C (64°F)104 mm (4.1 inches)79%high
October Weather10°C (51°F)109 mm (4.3 inches)83%moderate
November Weather2°C (36°F)45 mm (1.8 inches)88%moderate
December Weather-2°C (28°F)45 mm (1.8 inches)81%low

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