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January Weather in Rock Island, Canada

Last updated: June 18, 2025

In January, the average temperature in Rock Island, Canada hovers around -8°C (17°F). However, expect a wide range, with minimums dipping as low as -31°C (-23°F) and maximums peaking at 11°C (52°F). During this month, precipitation averages 88 mm (3.5 in) spread across 13 days, contributing to a humidity level of 91%—perfect for embracing the winter atmosphere!

January Temperature in Rock Island

In January in Rock Island, the average temperature is -8°C (17°F). Maximums can reach 11°C (52°F) and minimums can drop as low as -31°C (-23°F). Travelers should be prepared for extreme cold and variation in temperatures during this time.

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

The chart illustrates January 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, January typically has an average temperature of -8°C (17°F), with highs reaching up to 11°C (52°F) and lows dropping to around -31°C (-23°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.

January Precipitation in Rock Island

In Rock Island in January, the precipitation amount is 88 mm (3.5 in) spread over 13 days.

January Precipitation Trends in Rock Island

The chart displays monthly precipitation patterns in Rock Island, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Rock Island, January typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8882801121031161191048314911484
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rock Island

In Rock Island in January, humidity is 91%. With an average temperature of -8°C (17°F), this humidity feels like a chilly dampness that clings to your skin, making it uncomfortable for traveling as every step feels heavier and the cold seems to seep into your bones.

January Average Humidity in Rock Island

This chart illustrates the average monthly humidity levels in Rock Island, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Rock Island is approximately 91%, 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 January generated using information from the Copernicus Climate Change Service.

January UV Index in Rock Island

In Rock Island in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Rock Island, you can visit Hourly UV Index in Rock Island.

Maximum UV Index Levels in Rock Island for January

The chart shows the monthly maximum UV Index (UVI) for Rock Island in January, 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 January, the maximum UV index in Rock Island typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Rock Island January 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 January 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 January’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 January’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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