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December Weather in Madison, United States

Last updated: June 24, 2025

In December, the average temperature in Madison, United States hovers around 5°C (41°F), offering a crisp winter atmosphere. Temperatures can drop to a chilly -14°C (8°F) or rise to a mild 20°C (69°F). Expect about 127 mm (5.0 in) of precipitation spread over 12 days, contributing to the region's 86% average humidity. Prepare for a month where layers are essential and the air feels fresh!

December Temperature in Madison

In December in Madison, the average temperature is 5°C (41°F), with maximums reaching up to 20°C (69°F) and minimums dropping as low as -14°C (8°F). This wide temperature range means travelers should be prepared for both chilly and mild weather during their stay.

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

The chart illustrates December temperature patterns in Madison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Madison, December typically has an average temperature of 5°C (41°F), with highs reaching up to 20°C (69°F) and lows dropping to around -14°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec364247556571757369604641
Data source: Temperature data for Madison 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 Madison

In Madison in December, the precipitation amount is 127 mm (5.0 in) occurring over the course of 12 days.

December Precipitation Trends in Madison

The chart displays monthly precipitation patterns in Madison, 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 Madison, December typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec10216612814016716112711510612480128
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Madison

In Madison in December humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

December Average Humidity in Madison

This chart illustrates the average monthly humidity levels in Madison, 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 Madison is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Madison

In Madison 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 Madison, you can check the information here.

Maximum UV Index Levels in Madison for December

The chart shows the monthly maximum UV Index (UVI) for Madison 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 Madison typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710101111109753
Data source: Madison 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 Madison Compares to Other Months

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

This table compares monthly weather conditions in Madison, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)102 mm (4.0 inches)87%moderate
February Weather5°C (42°F)166 mm (6.5 inches)87%moderate
March Weather8°C (47°F)128 mm (5.0 inches)86%high
April Weather13°C (56°F)140 mm (5.5 inches)84%very high
May Weather18°C (65°F)167 mm (6.6 inches)83%very high
June Weather22°C (71°F)161 mm (6.3 inches)83%extreme
July Weather24°C (76°F)127 mm (5.0 inches)79%extreme
August Weather23°C (74°F)115 mm (4.5 inches)66%very high
September Weather21°C (70°F)106 mm (4.2 inches)68%very high
October Weather15°C (60°F)124 mm (4.9 inches)78%high
November Weather8°C (46°F)80 mm (3.2 inches)89%moderate
December Weather5°C (41°F)127 mm (5.0 inches)86%moderate

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