Last updated: June 24, 2025
In December, the average temperature in Madison, United States hovers around 4°C (40°F). Expect a mix of chilly days, with minimums dipping to -13°C (10°F) and highs reaching up to 21°C (70°F). Be prepared for 85 mm (3.4 in) of precipitation spread over 8 days, and with an average humidity of 85%, the air will feel quite damp.
In December in Madison, the average temperature is 4°C (40°F). Maximum can reach 21°C (70°F) and minimum can be as low as -13°C (10°F). It's essential to pack accordingly for a mix of mild and chilly weather during your travels.
In Madison in December, the precipitation amount is 85 mm (3.4 in) over the course of 8 days.
In Madison in December, humidity is 85%. With an average temperature of 4°C (40°F), this humidity feels like an icy blanket wrapping around you, making outdoor activities feel much colder and damp, which can be quite uncomfortable for traveling.
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.
UV Risk Categories
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.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 2°C (36°F) | 61 mm (2.4 inches) | 86% | moderate |
February Weather | 5°C (41°F) | 90 mm (3.5 inches) | 86% | moderate |
March Weather | 8°C (46°F) | 74 mm (2.9 inches) | 86% | high |
April Weather | 13°C (56°F) | 112 mm (4.4 inches) | 84% | very high |
May Weather | 18°C (65°F) | 122 mm (4.8 inches) | 78% | extreme |
June Weather | 23°C (73°F) | 125 mm (4.9 inches) | 79% | very high |
July Weather | 26°C (79°F) | 92 mm (3.6 inches) | 70% | very high |
August Weather | 24°C (76°F) | 139 mm (5.5 inches) | 59% | very high |
September Weather | 21°C (70°F) | 107 mm (4.2 inches) | 68% | very high |
October Weather | 16°C (60°F) | 109 mm (4.3 inches) | 80% | high |
November Weather | 7°C (45°F) | 82 mm (3.2 inches) | 86% | moderate |
December Weather | 4°C (40°F) | 85 mm (3.4 inches) | 85% | moderate |