May Weather in Fort Madison, United States

Last updated: June 24, 2025

In Fort Madison, United States, the average temperature in May hovers around 18°C (64°F). However, temperatures can vary widely, with a minimum of 3°C (37°F) and a maximum reaching 36°C (97°F). Expect about 168 mm (6.6 in) of precipitation over roughly 15 days, and enjoy a generally humid atmosphere with an average humidity of 78%.

May Temperature in Fort Madison

In May in Fort Madison, the average temperature is 18°C (64°F). Maximum temperatures can reach 36°C (97°F) while the minimum can drop as low as 3°C (37°F). Be prepared for a wide range of temperatures when traveling during this month.

May Weather in Fort Madison: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Fort Madison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Madison, May typically has an average temperature of 18°C (64°F), with highs reaching up to 36°C (97°F) and lows dropping to around 3°C (37°F).

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

May Precipitation in Fort Madison

In Fort Madison in May, the total precipitation amount is 168 mm (6.6 in) collected over a period of 15 days.

May Precipitation Trends in Fort Madison

The chart displays monthly precipitation patterns in Fort Madison, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Fort Madison, May typically receives around 168 mm (6.6 inches) of precipitation spread over approximately 15 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Fort Madison

In Fort Madison in May, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

May Average Humidity in Fort Madison

This chart illustrates the average monthly humidity levels in Fort Madison, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Fort Madison is approximately 78%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Fort Madison

In Fort Madison in May, 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 Fort Madison.

Maximum UV Index Levels in Fort Madison for May

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

Data source: Fort Madison May 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 May Weather in Fort Madison Compares to Other Months

Weather in Fort Madison varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Fort Madison, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Fort Madison, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	56 mm (2.2 inches)	81%	moderate
February Weather	-2°C (29°F)	60 mm (2.3 inches)	81%	moderate
March Weather	5°C (42°F)	97 mm (3.8 inches)	81%	high
April Weather	10°C (51°F)	92 mm (3.6 inches)	82%	very high
May Weather	18°C (64°F)	168 mm (6.6 inches)	78%	very high
June Weather	24°C (75°F)	131 mm (5.1 inches)	81%	extreme
July Weather	26°C (78°F)	79 mm (3.1 inches)	79%	very high
August Weather	24°C (75°F)	75 mm (3.0 inches)	77%	very high
September Weather	21°C (70°F)	100 mm (4.0 inches)	78%	very high
October Weather	13°C (56°F)	123 mm (4.8 inches)	78%	high
November Weather	5°C (41°F)	51 mm (2.0 inches)	87%	moderate
December Weather	1°C (34°F)	45 mm (1.8 inches)	84%	low