July Weather in Collinsville, United States

Last updated: June 24, 2025

In July, the average temperature in Collinsville, United States is a warm 28°C (83°F). Visitors can expect a pleasant range, with minimums around 17°C (63°F) and peaks reaching 40°C (105°F). While the sun shines bright, you might experience some rain, with 94 mm (3.7 in) of precipitation spread over approximately 9 days. Don't forget, the average humidity hovers around 81%, adding to the tropical feel!

July Temperature in Collinsville

In July in Collinsville, the average temperature is 28°C (83°F), with maximums reaching up to 40°C (105°F) and minimums dropping as low as 17°C (63°F). This makes it an ideal destination for travelers seeking warm weather and the opportunity to enjoy outdoor activities.

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

The chart illustrates July temperature patterns in Collinsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Collinsville, July typically has an average temperature of 28°C (83°F), with highs reaching up to 40°C (105°F) and lows dropping to around 17°C (63°F).

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

July Precipitation in Collinsville

In Collinsville in July, the precipitation amount reaches 94 mm (3.7 in) over the course of 9 days.

July Precipitation Trends in Collinsville

The chart displays monthly precipitation patterns in Collinsville, 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 Collinsville, July typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 9 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 Collinsville

In Collinsville in July, humidity is 81%. With an average temperature of 28°C (83°F), this humidity feels like walking through a warm, damp blanket, making travel feel both stifling and exhausting.

July Average Humidity in Collinsville

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

In Collinsville 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 Collinsville.

Maximum UV Index Levels in Collinsville for July

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

Data source: Collinsville 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 Collinsville Compares to Other Months

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

This table compares monthly weather conditions in Collinsville, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	77 mm (3.0 inches)	77%	moderate
February Weather	5°C (41°F)	69 mm (2.7 inches)	76%	high
March Weather	12°C (54°F)	116 mm (4.6 inches)	71%	high
April Weather	15°C (60°F)	148 mm (5.8 inches)	73%	very high
May Weather	21°C (70°F)	198 mm (7.8 inches)	83%	very high
June Weather	26°C (79°F)	104 mm (4.1 inches)	83%	extreme
July Weather	28°C (83°F)	94 mm (3.7 inches)	81%	extreme
August Weather	27°C (81°F)	120 mm (4.7 inches)	73%	very high
September Weather	24°C (76°F)	87 mm (3.4 inches)	67%	very high
October Weather	17°C (62°F)	141 mm (5.6 inches)	72%	high
November Weather	10°C (50°F)	51 mm (2.0 inches)	82%	moderate
December Weather	7°C (44°F)	49 mm (1.9 inches)	85%	moderate