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April Weather in Rock Island, Canada

Last updated: June 18, 2025

In Rock Island, Canada, the average temperature in April hovers around 5°C (40°F). Visitors may experience a chill, with minimum temperatures dipping as low as -14°C (7°F), while reaching a pleasant maximum of 24°C (76°F). Be prepared for some rain, as 112 mm (4.4 in) of precipitation can fall over approximately 16 days. Additionally, the air carries a significant average humidity of 84%, making it a month where layers and waterproof gear are a must!

April Temperature in Rock Island

In April in Rock Island, the average temperature is 5°C (40°F). Maximums can reach 24°C (76°F), while minimums can drop to as low as -14°C (7°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates April 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, April typically has an average temperature of 5°C (40°F), with highs reaching up to 24°C (76°F) and lows dropping to around -14°C (7°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.

April Precipitation in Rock Island

In Rock Island in April, the precipitation amount is 112 mm (4.4 in) spread over 16 days.

April Precipitation Trends in Rock Island

The chart displays monthly precipitation patterns in Rock Island, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Rock Island, April typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec8882801121031161191048314911484
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Rock Island

In Rock Island in April, humidity is 84%. With an average temperature of 5°C (40°F), this humidity feels like a cold, damp blanket enveloping you, making it challenging to enjoy outdoor activities and requiring extra layers for comfort during your travels.

April Average Humidity in Rock Island

This chart illustrates the average monthly humidity levels in Rock Island, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Rock Island is approximately 84%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Rock Island

In Rock Island in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Rock Island.

Maximum UV Index Levels in Rock Island for April

The chart shows the monthly maximum UV Index (UVI) for Rock Island in April, 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 April, the maximum UV index in Rock Island typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Rock Island April 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 April 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 April’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 April’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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