May Weather in Louisville, United States

Last updated: June 24, 2025

In May, the average temperature in Louisville, United States hovers around 20°C (68°F), with a minimum dip to 3°C (37°F) and soaring highs of 34°C (94°F). Expect 146 mm (5.7 in) of precipitation spread across 15 days, contributing to an average humidity of 80%. Prepare for a mix of mild and vibrant weather!

May Temperature in Louisville

In May in Louisville, the average temperature is 20°C (68°F). Maximums can reach 34°C (94°F) and minimums can be as low as 3°C (37°F). This makes it an ideal time for travelers to enjoy a mix of warm sunny days and cooler evenings while exploring the area.

May Weather in Louisville: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Louisville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louisville, May typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (37°F).

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

May Precipitation in Louisville

In Louisville in May, the precipitation amount is 146 mm (5.7 in) over the course of 15 days.

May Precipitation Trends in Louisville

The chart displays monthly precipitation patterns in Louisville, 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 Louisville, May typically receives around 146 mm (5.7 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 Louisville

In Louisville in May, humidity is 80%. With an average temperature of 20°C (68°F), this humidity feels like traveling through a warm, dense blanket that clings to your skin, making you feel both sticky and lethargic as you explore the sights.

May Average Humidity in Louisville

This chart illustrates the average monthly humidity levels in Louisville, 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 Louisville is approximately 80%, 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 Louisville

In Louisville in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Louisville.

Maximum UV Index Levels in Louisville for May

The chart shows the monthly maximum UV Index (UVI) for Louisville 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 Louisville typically reaches 11, which falls under the extreme exposure category.

Data source: Louisville 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 Louisville Compares to Other Months

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

This table compares monthly weather conditions in Louisville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	88 mm (3.4 inches)	84%	moderate
February Weather	2°C (36°F)	98 mm (3.9 inches)	82%	moderate
March Weather	8°C (47°F)	135 mm (5.3 inches)	84%	high
April Weather	13°C (56°F)	121 mm (4.8 inches)	83%	very high
May Weather	20°C (68°F)	146 mm (5.7 inches)	80%	extreme
June Weather	25°C (77°F)	111 mm (4.4 inches)	83%	extreme
July Weather	26°C (80°F)	98 mm (3.8 inches)	82%	very high
August Weather	25°C (77°F)	97 mm (3.8 inches)	82%	very high
September Weather	23°C (73°F)	68 mm (2.7 inches)	79%	very high
October Weather	15°C (60°F)	116 mm (4.6 inches)	79%	high
November Weather	7°C (44°F)	93 mm (3.7 inches)	88%	moderate
December Weather	4°C (39°F)	85 mm (3.3 inches)	87%	moderate