July Weather in Duncan, United States

Last updated: June 24, 2025

In Duncan, United States, the average temperature in July reaches a balmy 29°C (85°F). However, prepare for a range in temperatures, with a minimum of 18°C (64°F) and soaring to a maximum of 42°C (109°F). Expect 33 mm (1.3 in) of precipitation over an average of 6 days, accompanied by a high humidity level of 80%. Whether you're basking in the heat or bracing for rain, make sure to enjoy all that this vibrant destination has to offer!

July Temperature in Duncan

In July in Duncan, the average temperature is 29°C (85°F). Maximum temperatures can reach as high as 42°C (109°F), while minimum temperatures can drop to around 18°C (64°F). Travelers should be prepared for both heat and cooler evenings during this time.

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

The chart illustrates July 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, July typically has an average temperature of 29°C (85°F), with highs reaching up to 42°C (109°F) and lows dropping to around 18°C (64°F).

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

July Precipitation in Duncan

In Duncan, in July, the precipitation amount is 33 mm (1.3 in) over the course of 6 days.

July Precipitation Trends in Duncan

The chart displays monthly precipitation patterns in Duncan, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Duncan, July typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Duncan

In Duncan in July, humidity is 80%. With an average temperature of 29°C (85°F), this humidity feels like a heavy blanket enveloping you, making every outdoor adventure feel more strenuous as sweat clings to your skin and the air feels thick and muggy.

July Average Humidity in Duncan

This chart illustrates the average monthly humidity levels in Duncan, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Duncan is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Duncan

In Duncan in July, 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 Duncan.

Maximum UV Index Levels in Duncan for July

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

Data source: Duncan July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	47 mm (1.9 inches)	76%	moderate
February Weather	6°C (43°F)	54 mm (2.1 inches)	76%	high
March Weather	13°C (56°F)	95 mm (3.8 inches)	70%	very high
April Weather	16°C (62°F)	95 mm (3.7 inches)	72%	very high
May Weather	22°C (72°F)	135 mm (5.3 inches)	82%	extreme
June Weather	27°C (80°F)	63 mm (2.5 inches)	82%	extreme
July Weather	29°C (85°F)	33 mm (1.3 inches)	80%	extreme
August Weather	29°C (84°F)	58 mm (2.3 inches)	72%	extreme
September Weather	25°C (77°F)	88 mm (3.5 inches)	64%	very high
October Weather	18°C (64°F)	97 mm (3.8 inches)	71%	very high
November Weather	11°C (52°F)	27 mm (1.1 inches)	81%	moderate
December Weather	8°C (46°F)	41 mm (1.6 inches)	84%	moderate