Last updated: June 24, 2025
In Madison, United States, the average temperature in September hovers around 21°C (70°F). Expect a range that can dip to a cool 4°C (39°F) or soar to a scorching 35°C (96°F). During this month, you're likely to encounter about 107 mm (4.2 in) of precipitation over approximately 10 days, accompanied by an average humidity level of 68%.
In September in Madison, the average temperature is 21°C (70°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 4°C (39°F). This makes Madison an ideal destination for travelers seeking a mix of warm weather and cooler evenings.
In Madison in September, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.
In Madison in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.
In Madison in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 September’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 |