May Weather in Carterville, United States

Last updated: June 24, 2025

In Carterville, United States, the average temperature in May hovers around 20°C (68°F). During this time, temperatures can range from a cool 3°C (38°F) to a warm 34°C (93°F). With an average precipitation of 186 mm (7.3 in) over 14 days, the air tends to feel quite humid, averaging about 83%. Embrace the charm of this season as you explore!

May Temperature in Carterville

In May in Carterville, the average temperature is 20°C (68°F). Maximums can reach 34°C (93°F), and minimums can be as low as 3°C (38°F). Be prepared for a range of weather conditions during your travels!

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

The chart illustrates May temperature patterns in Carterville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carterville, May typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Carterville

In Carterville in May, the precipitation amount is 186 mm (7.3 in) over a span of 14 days.

May Precipitation Trends in Carterville

The chart displays monthly precipitation patterns in Carterville, 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 Carterville, May typically receives around 186 mm (7.3 inches) of precipitation spread over approximately 14 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 Carterville

In Carterville in May humidity is 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.

May Average Humidity in Carterville

This chart illustrates the average monthly humidity levels in Carterville, 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 Carterville is approximately 83%, 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 Carterville

In Carterville in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Carterville.

Maximum UV Index Levels in Carterville for May

The chart shows the monthly maximum UV Index (UVI) for Carterville 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 Carterville typically reaches 10, which falls under the very high exposure category.

Data source: Carterville 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 Carterville Compares to Other Months

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

This table compares monthly weather conditions in Carterville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	74 mm (2.9 inches)	81%	moderate
February Weather	3°C (38°F)	64 mm (2.5 inches)	78%	high
March Weather	10°C (51°F)	136 mm (5.4 inches)	76%	high
April Weather	14°C (57°F)	131 mm (5.2 inches)	78%	very high
May Weather	20°C (68°F)	186 mm (7.3 inches)	83%	very high
June Weather	25°C (78°F)	87 mm (3.4 inches)	83%	extreme
July Weather	27°C (81°F)	93 mm (3.7 inches)	78%	extreme
August Weather	26°C (78°F)	110 mm (4.3 inches)	68%	very high
September Weather	23°C (74°F)	80 mm (3.2 inches)	64%	very high
October Weather	15°C (60°F)	129 mm (5.1 inches)	70%	high
November Weather	9°C (48°F)	54 mm (2.1 inches)	83%	moderate
December Weather	6°C (42°F)	46 mm (1.8 inches)	87%	moderate