July Weather in Rock Island, United States

Last updated: June 24, 2025

In July, the average temperature in Rock Island, United States hovers around 25°C (77°F). Expect a range from a cool 14°C (57°F) to a sweltering 36°C (97°F). The region sees about 83 mm (3.3 in) of precipitation over 10 days, while the air is typically filled with a humidity level of 79%.

July Temperature in Rock Island

In July in Rock Island, the average temperature is 25°C (77°F), with maximums reaching 36°C (97°F) and minimums dropping to as low as 14°C (57°F). It's a great time to visit for those who enjoy warm weather with occasional cooler evenings.

July Weather in Rock Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Rock Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rock Island, July typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 14°C (57°F).

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

July Precipitation in Rock Island

In Rock Island in July, the total precipitation amount is 83 mm (3.3 in) over a span of 10 days.

July Precipitation Trends in Rock Island

The chart displays monthly precipitation patterns in Rock Island, 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 Rock Island, July typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 10 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 Rock Island

In Rock Island in July, humidity is 79%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly sluggish but pleasantly tropical.

July Average Humidity in Rock Island

This chart illustrates the average monthly humidity levels in Rock Island, 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 Rock Island is approximately 79%, 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 Rock Island

In Rock Island in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Rock Island.

Maximum UV Index Levels in Rock Island for July

The chart shows the monthly maximum UV Index (UVI) for Rock Island 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 Rock Island typically reaches 10, which falls under the very high exposure category.

Data source: Rock Island 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 Rock Island Compares to Other Months

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

This table compares monthly weather conditions in Rock Island, 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 (24°F)	54 mm (2.1 inches)	81%	moderate
February Weather	-3°C (27°F)	60 mm (2.3 inches)	81%	moderate
March Weather	4°C (40°F)	91 mm (3.6 inches)	81%	high
April Weather	10°C (50°F)	105 mm (4.1 inches)	82%	very high
May Weather	17°C (63°F)	147 mm (5.8 inches)	78%	very high
June Weather	23°C (74°F)	131 mm (5.2 inches)	81%	extreme
July Weather	25°C (77°F)	83 mm (3.3 inches)	79%	very high
August Weather	23°C (74°F)	75 mm (2.9 inches)	77%	very high
September Weather	20°C (69°F)	107 mm (4.2 inches)	78%	very high
October Weather	12°C (54°F)	121 mm (4.8 inches)	78%	high
November Weather	4°C (39°F)	50 mm (2.0 inches)	87%	moderate
December Weather	0°C (32°F)	48 mm (1.9 inches)	84%	low