May Weather in Cary, United States

Last updated: June 24, 2025

In May of Cary, United States, the average temperature hovers around 22°C (71°F), with extremes ranging from a chilly 4°C (39°F) to a sweltering 36°C (97°F). Visitors can expect about 114 mm (4.5 in) of precipitation spread over 10 days, contributing to an average humidity level of 81%.

May Temperature in Cary

In May in Cary, the average temperature is 22°C (71°F). The maximum can reach 36°C (97°F), while the minimum can drop to as low as 4°C (39°F). This diverse temperature range makes Cary an ideal destination for travelers looking to experience both warm and cool weather during their visit.

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

The chart illustrates May temperature patterns in Cary, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cary, May typically has an average temperature of 22°C (71°F), with highs reaching up to 36°C (97°F) and lows dropping to around 4°C (39°F).

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

May Precipitation in Cary

In Cary in May, the precipitation amount is 114 mm (4.5 in) over a period of 10 days.

May Precipitation Trends in Cary

The chart displays monthly precipitation patterns in Cary, 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 Cary, May typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 10 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 Cary

In Cary in May humidity is 81%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities somewhat challenging but offering a tropical ambiance perfect for exploring shaded areas and enjoying refreshing drinks.

May Average Humidity in Cary

This chart illustrates the average monthly humidity levels in Cary, 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 Cary is approximately 81%, 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 Cary

In Cary 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 Cary.

Maximum UV Index Levels in Cary for May

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

Data source: Cary 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 Cary Compares to Other Months

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

This table compares monthly weather conditions in Cary, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	93 mm (3.6 inches)	85%	moderate
February Weather	9°C (49°F)	107 mm (4.2 inches)	82%	high
March Weather	12°C (53°F)	80 mm (3.2 inches)	81%	very high
April Weather	17°C (62°F)	114 mm (4.5 inches)	80%	very high
May Weather	22°C (71°F)	114 mm (4.5 inches)	81%	extreme
June Weather	25°C (76°F)	131 mm (5.2 inches)	81%	extreme
July Weather	27°C (81°F)	117 mm (4.6 inches)	81%	extreme
August Weather	26°C (79°F)	141 mm (5.6 inches)	80%	very high
September Weather	23°C (75°F)	140 mm (5.5 inches)	79%	very high
October Weather	18°C (66°F)	85 mm (3.4 inches)	80%	very high
November Weather	11°C (51°F)	83 mm (3.3 inches)	85%	moderate
December Weather	8°C (47°F)	107 mm (4.2 inches)	86%	moderate