May Weather in Duncan, United States

Last updated: June 24, 2025

In May, the average temperature in Duncan, United States is a pleasant 23°C (74°F). However, you might experience a range from a cool 7°C (44°F) to a sweltering 37°C (99°F). Expect minimal rainfall, with just 3 mm (0.1 in) over 1 day of the month, and enjoy a comfortable average humidity of 45%.

May Temperature in Duncan

In May in Duncan, the average temperature is 23°C (74°F). Maximums can reach 37°C (99°F), and minimums can be as low as 7°C (44°F). This makes Duncan a pleasant destination for travelers seeking mild weather and the chance to experience a variety of temperatures during their stay.

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

The chart illustrates May temperature patterns in Duncan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duncan, May typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 7°C (44°F).

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

May Precipitation in Duncan

In Duncan in May, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

May Precipitation Trends in Duncan

The chart displays monthly precipitation patterns in Duncan, 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 Duncan, May typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 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 Duncan

In Duncan in May, humidity is 45%. With an average temperature of 23°C (74°F), this humidity feels like a comfortable, refreshing breeze that makes exploring the area enjoyable, allowing travelers to soak in the sights without feeling weighed down by heat or moisture.

May Average Humidity in Duncan

This chart illustrates the average monthly humidity levels in Duncan, 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 Duncan is approximately 45%, 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 Duncan

In Duncan in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Duncan.

Maximum UV Index Levels in Duncan for May

The chart shows the monthly maximum UV Index (UVI) for Duncan 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 Duncan typically reaches 12, which falls under the extreme exposure category.

Data source: Duncan 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 Duncan Compares to Other Months

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

This table compares monthly weather conditions in Duncan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	26 mm (1.0 inches)	81%	moderate
February Weather	9°C (48°F)	34 mm (1.3 inches)	82%	high
March Weather	14°C (57°F)	18 mm (0.7 inches)	68%	very high
April Weather	19°C (67°F)	3 mm (0.1 inches)	55%	extreme
May Weather	23°C (74°F)	3 mm (0.1 inches)	45%	extreme
June Weather	29°C (84°F)	6 mm (0.2 inches)	37%	extreme
July Weather	29°C (84°F)	50 mm (2.0 inches)	43%	extreme
August Weather	28°C (83°F)	23 mm (0.9 inches)	53%	extreme
September Weather	25°C (77°F)	29 mm (1.1 inches)	66%	extreme
October Weather	19°C (66°F)	15 mm (0.6 inches)	72%	very high
November Weather	13°C (56°F)	25 mm (1.0 inches)	81%	high
December Weather	8°C (46°F)	25 mm (1.0 inches)	84%	moderate