August Weather in Madison, United States

Last updated: June 24, 2025

In Madison, United States, the average temperature in August is a pleasant 21°C (70°F). While you may experience a refreshing low of 9°C (48°F), temperatures can soar up to 34°C (94°F). Expect about 116 mm (4.6 in) of precipitation over 9 days, contributing to an average humidity of 80%. Enjoy the vibrant climate of this beautiful locale!

August Temperature in Madison

In August in Madison, the average temperature is 21°C (70°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 9°C (48°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities while being prepared for varying temperatures.

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

The chart illustrates August 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, August typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (48°F).

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

August Precipitation in Madison

In Madison in August, the precipitation amount is 116 mm (4.6 in) spread over 9 days.

August Precipitation Trends in Madison

The chart displays monthly precipitation patterns in Madison, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Madison, August typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Madison

In Madison in August humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

August Average Humidity in Madison

This chart illustrates the average monthly humidity levels in Madison, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Madison is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Madison

In Madison in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for Madison in August, 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 August, the maximum UV index in Madison typically reaches 9, which falls under the very high exposure category.

Data source: Madison August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	20 mm (0.8 inches)	80%	low
February Weather	-8°C (18°F)	22 mm (0.9 inches)	84%	moderate
March Weather	1°C (33°F)	60 mm (2.4 inches)	75%	moderate
April Weather	6°C (43°F)	74 mm (2.9 inches)	79%	very high
May Weather	14°C (58°F)	108 mm (4.3 inches)	74%	very high
June Weather	22°C (72°F)	81 mm (3.2 inches)	81%	extreme
July Weather	23°C (74°F)	98 mm (3.9 inches)	82%	very high
August Weather	21°C (70°F)	116 mm (4.6 inches)	80%	very high
September Weather	18°C (64°F)	108 mm (4.3 inches)	75%	very high
October Weather	8°C (47°F)	78 mm (3.1 inches)	77%	moderate
November Weather	1°C (34°F)	27 mm (1.1 inches)	85%	moderate
December Weather	-4°C (25°F)	35 mm (1.4 inches)	83%	low