nomadseason

September Weather in Madison, United States

Last updated: June 24, 2025

In September, the average temperature in Madison, United States hovers around 22°C (72°F). However, be prepared for a temperature range that can dip to a chilly 6°C (42°F) and soar up to a sweltering 36°C (97°F). With an expected precipitation amount of 124 mm (4.9 in) spread over 9 days, you'll want to carry an umbrella. Don't forget, the average humidity is a comfortable 68%, adding to the overall pleasant atmosphere!

September Temperature in Madison

In September, in Madison, the average temperature is 22°C (72°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 6°C (42°F). This makes it a great time to visit for travelers seeking warm weather while still having the option for cooler evenings.

September Weather in Madison: Daily Temperature Highs, Lows, and Averages

The chart illustrates September 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, September typically has an average temperature of 22°C (72°F), with highs reaching up to 36°C (97°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec404550596875797772634844
Data source: Temperature data for Madison generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Madison

In Madison in September, the precipitation amount is 124 mm (4.9 in) over the course of 9 days.

September Precipitation Trends in Madison

The chart displays monthly precipitation patterns in Madison, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Madison, September typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7610977128127877510412411979100
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Madison

In Madison in September humidity is 68%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, slightly stifling but still manageable for traveling, creating an atmosphere that encourages leisurely outdoor activities while prompting occasional breaks for refreshment.

September Average Humidity in Madison

This chart illustrates the average monthly humidity levels in Madison, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Madison is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Madison

In Madison in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Madison.

Maximum UV Index Levels in Madison for September

The chart shows the monthly maximum UV Index (UVI) for Madison in September, 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 September, the maximum UV index in Madison typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4689101110109853
Data source: Madison September 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 September 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 September’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 September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)76 mm (3.0 inches)87%moderate
February Weather7°C (46°F)109 mm (4.3 inches)87%high
March Weather10°C (51°F)77 mm (3.0 inches)86%very high
April Weather15°C (60°F)128 mm (5.0 inches)84%very high
May Weather20°C (68°F)127 mm (5.0 inches)83%very high
June Weather24°C (75°F)87 mm (3.4 inches)83%extreme
July Weather26°C (80°F)75 mm (2.9 inches)79%very high
August Weather25°C (77°F)104 mm (4.1 inches)66%very high
September Weather22°C (72°F)124 mm (4.9 inches)68%very high
October Weather17°C (63°F)119 mm (4.7 inches)78%very high
November Weather9°C (49°F)79 mm (3.1 inches)89%moderate
December Weather7°C (44°F)100 mm (3.9 inches)86%moderate

Compare Madison's Climate with Cities Worldwide