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July Weather in Rock Island, Canada

Last updated: June 18, 2025

In July, the average temperature in Rock Island, Canada hovers around 20°C (67°F). While you can enjoy pleasant days, be prepared for cooler nights, as temperatures can dip to a minimum of 8°C (46°F). On the warmer side, you might experience highs reaching 32°C (90°F). Expect around 119 mm (4.7 in) of precipitation over 15 days, contributing to an average humidity of 75%.

July Temperature in Rock Island

In July in Rock Island, the average temperature is 20°C (67°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 8°C (46°F). This makes Rock Island a pleasant destination for travelers seeking a comfortable climate during this time of year.

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 20°C (67°F), with highs reaching up to 32°C (90°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec171927405362676658473222
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 119 mm (4.7 in) over a span of 15 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 119 mm (4.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec8882801121031161191048314911484
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 20°C (67°F), this humidity feels like a warm, enveloping blanket that makes outdoor activities more strenuous, causing travelers to feel sticky and fatigued faster.

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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
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 Weather-8°C (17°F)88 mm (3.5 inches)91%low
February Weather-7°C (20°F)82 mm (3.2 inches)89%moderate
March Weather-3°C (27°F)80 mm (3.1 inches)85%moderate
April Weather5°C (40°F)112 mm (4.4 inches)84%high
May Weather12°C (53°F)103 mm (4.1 inches)78%very high
June Weather17°C (62°F)116 mm (4.5 inches)72%very high
July Weather20°C (67°F)119 mm (4.7 inches)75%very high
August Weather19°C (66°F)104 mm (4.1 inches)74%very high
September Weather14°C (58°F)83 mm (3.3 inches)77%high
October Weather8°C (47°F)149 mm (5.9 inches)85%moderate
November Weather0°C (33°F)114 mm (4.5 inches)86%moderate
December Weather-5°C (23°F)84 mm (3.3 inches)85%low

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