July Weather in Decatur, United States

Last updated: June 24, 2025

In Decatur, United States, the average temperature in July hovers around 25°C (78°F), creating a delightful climate for exploration. Expect a minimum of 13°C (56°F) and a maximum reaching up to 35°C (96°F). During this time, anticipate about 114 mm (4.5 in) of precipitation spread over 11 days, with an average humidity of 82%, adding a hint of tropical warmth to the atmosphere.

July Temperature in Decatur

In July in Decatur, the average temperature is 25°C (78°F). Maximums can reach 35°C (96°F), and minimums can be as low as 13°C (56°F). It's an ideal time for travelers to enjoy mild weather with opportunities for both warm days and cooler evenings.

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

The chart illustrates July temperature patterns in Decatur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Decatur, July typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (96°F) and lows dropping to around 13°C (56°F).

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

July Precipitation in Decatur

In Decatur in July, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.

July Precipitation Trends in Decatur

The chart displays monthly precipitation patterns in Decatur, 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 Decatur, July typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 11 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 Decatur

In Decatur in July, humidity is 82%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging you to seek shade or a cool spot during your travels.

July Average Humidity in Decatur

This chart illustrates the average monthly humidity levels in Decatur, 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 Decatur is approximately 82%, 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 Decatur

In Decatur 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 Decatur.

Maximum UV Index Levels in Decatur for July

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

Data source: Decatur 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 Decatur Compares to Other Months

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

This table compares monthly weather conditions in Decatur, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	76 mm (3.0 inches)	84%	moderate
February Weather	0°C (32°F)	76 mm (3.0 inches)	82%	moderate
March Weather	6°C (44°F)	131 mm (5.2 inches)	84%	high
April Weather	11°C (53°F)	132 mm (5.2 inches)	83%	very high
May Weather	19°C (66°F)	149 mm (5.9 inches)	80%	very high
June Weather	24°C (75°F)	112 mm (4.4 inches)	83%	extreme
July Weather	25°C (78°F)	114 mm (4.5 inches)	82%	extreme
August Weather	23°C (74°F)	101 mm (4.0 inches)	82%	very high
September Weather	21°C (71°F)	71 mm (2.8 inches)	79%	very high
October Weather	14°C (58°F)	120 mm (4.7 inches)	79%	high
November Weather	5°C (42°F)	76 mm (3.0 inches)	88%	moderate
December Weather	2°C (36°F)	53 mm (2.1 inches)	87%	moderate