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July Weather in Rock Island, United States

Last updated: June 24, 2025

In Rock Island, United States, the average temperature in July is a warm 28°C (83°F), with minimums dipping to 17°C (64°F) and soaring to a maximum of 41°C (107°F). Expect 80 mm (3.1 in) of precipitation spread over about 9 days, while the average humidity sits at a comfortable 75%.

July Temperature in Rock Island

In July in Rock Island, the average temperature is 28°C (83°F). Maximums can reach 41°C (107°F), while minimums can be as low as 17°C (64°F). This diverse temperature range makes Rock Island an ideal destination for travelers looking to enjoy both warm days and 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 28°C (83°F), with highs reaching up to 41°C (107°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec414555617179838177645147
Data source: Temperature data for Rock Island generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Rock Island

In Rock Island in July, the precipitation amount is 80 mm (3.1 in) spread over 9 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 80 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec831131191352008780116661317085
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Rock Island

In Rock Island in July humidity is 75%. With an average temperature of 28°C (83°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel particularly heavy, and prompting frequent breaks in the shade to stay comfortable while traveling.

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 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
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 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 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111111109754
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.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)83 mm (3.3 inches)82%moderate
February Weather7°C (45°F)113 mm (4.5 inches)79%high
March Weather13°C (56°F)119 mm (4.7 inches)77%high
April Weather16°C (61°F)135 mm (5.3 inches)78%very high
May Weather22°C (71°F)200 mm (7.9 inches)82%extreme
June Weather26°C (79°F)87 mm (3.4 inches)81%extreme
July Weather28°C (83°F)80 mm (3.1 inches)75%extreme
August Weather27°C (81°F)116 mm (4.6 inches)61%very high
September Weather25°C (77°F)66 mm (2.6 inches)59%very high
October Weather18°C (64°F)131 mm (5.2 inches)69%high
November Weather11°C (52°F)69 mm (2.7 inches)82%moderate
December Weather8°C (47°F)85 mm (3.3 inches)87%moderate

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