September Weather in Madison, United States

Last updated: June 24, 2025

In Madison, United States, the average temperature in September hovers around 25°C (77°F), with a minimum dipping as low as 11°C (51°F) and a maximum soaring to 36°C (97°F). Expect 84 mm (3.3 in) of precipitation over 7 days, accompanied by an average humidity of 71%. Prepare for a month that balances warmth with refreshing moisture!

September Temperature in Madison

In September in Madison, the average temperature is 25°C (77°F). Maximums can reach 36°C (97°F), and minimums can be as low as 11°C (51°F). This makes Madison an ideal destination for travelers looking for warm weather with comfortable nights.

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 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (51°F).

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

September Precipitation in Madison

In Madison in September, the total precipitation amount is 84 mm (3.3 in) distributed over a span of 7 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 84 mm (3.3 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Madison

In Madison in September humidity is 71%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable, especially if you take breaks in shaded areas and stay hydrated.

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 71%, offering insight into how humid the weather typically is during this month.

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.

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.
	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