May Weather in Idalou, United States

Last updated: June 24, 2025

In May, the average temperature in Idalou, United States is a pleasant 21°C (71°F). However, temperatures can vary dramatically, with a minimum of 2°C (36°F) and a scorching maximum of 40°C (104°F). Rainfall is moderate, with an average precipitation amount of 64 mm (2.5 in) spread over 8 days. The air carries a notably high humidity level of 75%, contributing to the overall climate experience.

May Temperature in Idalou

In May in Idalou, the average temperature is 21°C (71°F). Maximums can reach 40°C (104°F), while minimums can drop as low as 2°C (36°F). Expect a diverse range of weather, making it essential to pack versatile clothing for your travels.

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

The chart illustrates May temperature patterns in Idalou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Idalou, May typically has an average temperature of 21°C (71°F), with highs reaching up to 40°C (104°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in Idalou

In Idalou in May, the precipitation amount is 64 mm (2.5 in) over the course of 8 days.

May Precipitation Trends in Idalou

The chart displays monthly precipitation patterns in Idalou, 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 Idalou, May typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 8 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 Idalou

In Idalou in May, humidity is 75%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making travel slightly uncomfortable but offering a lush, vibrant atmosphere that invites exploration at a leisurely pace.

May Average Humidity in Idalou

This chart illustrates the average monthly humidity levels in Idalou, 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 Idalou is approximately 75%, 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 Idalou

In Idalou 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 Idalou.

Maximum UV Index Levels in Idalou for May

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

Data source: Idalou 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 Idalou Compares to Other Months

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

This table compares monthly weather conditions in Idalou, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	17 mm (0.6 inches)	75%	moderate
February Weather	6°C (43°F)	12 mm (0.5 inches)	74%	high
March Weather	12°C (54°F)	44 mm (1.7 inches)	66%	very high
April Weather	16°C (61°F)	31 mm (1.2 inches)	70%	extreme
May Weather	21°C (71°F)	64 mm (2.5 inches)	75%	extreme
June Weather	26°C (78°F)	47 mm (1.9 inches)	79%	extreme
July Weather	27°C (81°F)	28 mm (1.1 inches)	78%	extreme
August Weather	27°C (80°F)	33 mm (1.3 inches)	71%	extreme
September Weather	23°C (74°F)	57 mm (2.2 inches)	69%	very high
October Weather	16°C (61°F)	51 mm (2.0 inches)	70%	very high
November Weather	10°C (51°F)	16 mm (0.6 inches)	82%	high
December Weather	7°C (44°F)	16 mm (0.6 inches)	82%	moderate