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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 4°C (40°F), with a range that can see lows of -16°C (3°F) and highs reaching up to 21°C (70°F). Expect 10 days of precipitation, accumulating to 106 mm (4.2 in), while the air remains quite humid with an average humidity of 87%. Prepare for a chill!

December Temperature in Madison

In December in Madison, the average temperature is 4°C (40°F). The maximum can reach 21°C (70°F) while the minimum can drop as low as -16°C (3°F). Travelers should prepare for a wide range of temperatures and pack accordingly.

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 4°C (40°F), with highs reaching up to 21°C (70°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec343846556774787671604440
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 106 mm (4.2 in) over a span of 10 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 106 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8511913713412314299939710096106
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 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
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 Weather1°C (34°F)85 mm (3.4 inches)87%moderate
February Weather3°C (38°F)119 mm (4.7 inches)85%moderate
March Weather8°C (47°F)137 mm (5.4 inches)86%high
April Weather13°C (55°F)134 mm (5.3 inches)84%very high
May Weather19°C (67°F)123 mm (4.9 inches)79%very high
June Weather24°C (75°F)142 mm (5.6 inches)82%extreme
July Weather25°C (78°F)99 mm (3.9 inches)79%very high
August Weather24°C (76°F)93 mm (3.7 inches)70%very high
September Weather22°C (71°F)97 mm (3.8 inches)69%very high
October Weather15°C (60°F)100 mm (3.9 inches)76%high
November Weather7°C (45°F)96 mm (3.8 inches)88%moderate
December Weather4°C (40°F)106 mm (4.2 inches)87%moderate

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