Last updated: June 24, 2025
In May, the average temperature in Madison, United States is a pleasant 20°C (68°F). However, you might experience temperatures ranging from a chilly 2°C (35°F) to a sweltering 35°C (96°F). Be prepared for some rain, as precipitation averages 127 mm (5.0 in) over 12 days, and don't forget that the average humidity can reach a muggy 83%!
In May in Madison, the average temperature is 20°C (68°F). Maximum can reach 35°C (96°F), and minimum can be as low as 2°C (35°F). This makes Madison an ideal destination for travelers seeking pleasant weather with a variety of experiences, from warm days to cooler nights.
In Madison in May, the precipitation amount is 127 mm (5.0 in) occurring over the course of 12 days.
In Madison in May humidity is 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.
In Madison in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Madison.
UV Risk Categories
Weather in Madison varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Madison, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 76 mm (3.0 inches) | 87% | moderate |
| February Weather | 7°C (46°F) | 109 mm (4.3 inches) | 87% | high |
| March Weather | 10°C (51°F) | 77 mm (3.0 inches) | 86% | very high |
| April Weather | 15°C (60°F) | 128 mm (5.0 inches) | 84% | very high |
| May Weather | 20°C (68°F) | 127 mm (5.0 inches) | 83% | very high |
| June Weather | 24°C (75°F) | 87 mm (3.4 inches) | 83% | extreme |
| July Weather | 26°C (80°F) | 75 mm (2.9 inches) | 79% | very high |
| August Weather | 25°C (77°F) | 104 mm (4.1 inches) | 66% | very high |
| September Weather | 22°C (72°F) | 124 mm (4.9 inches) | 68% | very high |
| October Weather | 17°C (63°F) | 119 mm (4.7 inches) | 78% | very high |
| November Weather | 9°C (49°F) | 79 mm (3.1 inches) | 89% | moderate |
| December Weather | 7°C (44°F) | 100 mm (3.9 inches) | 86% | moderate |