December Weather in Madison, United States

Last updated: June 24, 2025

In December, the average temperature in Madison, United States is a cool 9°C (48°F). Be prepared for a range of temperatures, as it can dip to a chilly -10°C (15°F) or soar to a warm 26°C (79°F). You can expect around 155 mm (6.1 in) of precipitation spread over 9 days, contributing to an average humidity of 88%.

December Temperature in Madison

In December in Madison, the average temperature is 9°C (48°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -10°C (15°F). Be prepared for a wide range of temperatures when planning your trip!

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 9°C (48°F), with highs reaching up to 26°C (79°F) and lows dropping to around -10°C (15°F).

Data source: Temperature data for Madison generated using information from the Copernicus Climate Change Service.

December Precipitation in Madison

In Madison in December, the precipitation amount is 155 mm (6.1 in) over the course of 9 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 155 mm (6.1 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Madison

In Madison in December, humidity is 88%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill settling into your bones, making outdoor exploration feel heavy and oppressive.

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 88%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	107 mm (4.2 inches)	84%	moderate
February Weather	8°C (46°F)	164 mm (6.5 inches)	83%	high
March Weather	13°C (56°F)	164 mm (6.5 inches)	81%	very high
April Weather	16°C (62°F)	140 mm (5.5 inches)	81%	very high
May Weather	22°C (73°F)	153 mm (6.0 inches)	83%	extreme
June Weather	26°C (79°F)	107 mm (4.2 inches)	83%	extreme
July Weather	28°C (82°F)	125 mm (4.9 inches)	81%	extreme
August Weather	27°C (80°F)	121 mm (4.8 inches)	74%	very high
September Weather	25°C (77°F)	84 mm (3.3 inches)	71%	very high
October Weather	18°C (65°F)	125 mm (4.9 inches)	76%	high
November Weather	11°C (51°F)	77 mm (3.0 inches)	84%	moderate
December Weather	9°C (48°F)	155 mm (6.1 inches)	88%	moderate