May Weather in Clayton, United States

Last updated: June 24, 2025

In May, the average temperature in Clayton, United States hovers around 19°C (66°F), but be prepared for fluctuations; it can drop as low as 4°C (39°F) or soar to a sweltering 34°C (93°F). Expect some rain during your visit, with an average precipitation of 129 mm (5.1 in) spread over 12 days. Don't forget, the air tends to be quite humid, with an average humidity of 78%, making it essential to stay hydrated and comfortable during your stay.

May Temperature in Clayton

In May in Clayton, the average temperature is 19°C (66°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 4°C (39°F). It's a wonderful time for travelers to experience comfortable weather while enjoying outdoor activities.

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

The chart illustrates May temperature patterns in Clayton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clayton, May typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (39°F).

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

May Precipitation in Clayton

In Clayton in May, the total precipitation amount is 129 mm (5.1 in) over the course of 12 days.

May Precipitation Trends in Clayton

The chart displays monthly precipitation patterns in Clayton, 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 Clayton, May typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 12 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 Clayton

In Clayton in May, humidity is 78%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making traveling quite uncomfortable unless you're well-prepared with lightweight, breathable clothing and frequent breaks to stay hydrated.

May Average Humidity in Clayton

This chart illustrates the average monthly humidity levels in Clayton, 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 Clayton 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 Clayton

In Clayton 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 Clayton.

Maximum UV Index Levels in Clayton for May

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

Data source: Clayton 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 Clayton Compares to Other Months

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

This table compares monthly weather conditions in Clayton, 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 (37°F)	58 mm (2.3 inches)	84%	moderate
February Weather	5°C (41°F)	98 mm (3.8 inches)	83%	moderate
March Weather	8°C (46°F)	99 mm (3.9 inches)	83%	high
April Weather	14°C (57°F)	96 mm (3.8 inches)	81%	very high
May Weather	19°C (66°F)	129 mm (5.1 inches)	78%	very high
June Weather	24°C (75°F)	103 mm (4.1 inches)	79%	very high
July Weather	27°C (80°F)	144 mm (5.7 inches)	74%	very high
August Weather	25°C (78°F)	176 mm (6.9 inches)	72%	very high
September Weather	22°C (73°F)	94 mm (3.7 inches)	75%	very high
October Weather	17°C (63°F)	115 mm (4.5 inches)	81%	high
November Weather	9°C (49°F)	78 mm (3.1 inches)	85%	moderate
December Weather	5°C (42°F)	95 mm (3.7 inches)	84%	moderate