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October Weather in Rock Island, United States

Last updated: June 24, 2025

In October, the average temperature in Rock Island, United States hovers around 18°C (64°F), making it a pleasant time to visit. However, be prepared for variability, with temperatures ranging from a chilly -1°C (31°F) to a warm 34°C (93°F). Expect about 131 mm (5.2 in) of precipitation over approximately 10 days, contributing to an average humidity of 69%. Dress accordingly and enjoy the diverse climate!

October Temperature in Rock Island

In October in Rock Island, the average temperature is 18°C (64°F). Maximum temperatures can reach 34°C (93°F), while minimums can plummet to as low as -1°C (31°F). This variation makes it essential for travelers to pack both light clothing for warmer days and warmer layers for cooler nights.

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

The chart illustrates October 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, October typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (31°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.

October Precipitation in Rock Island

In Rock Island in October, the precipitation amount is 131 mm (5.2 in) over a duration of 10 days.

October Precipitation Trends in Rock Island

The chart displays monthly precipitation patterns in Rock Island, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Rock Island, October typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec831131191352008780116661317085
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Rock Island

In Rock Island in October humidity is 69%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making traveling both comfortable and slightly sticky as you explore the scenery.

October Average Humidity in Rock Island

This chart illustrates the average monthly humidity levels in Rock Island, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Rock Island is approximately 69%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Rock Island

In Rock Island in October, 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 October

The chart shows the monthly maximum UV Index (UVI) for Rock Island in October, 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 October, the maximum UV index in Rock Island typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111111109754
Data source: Rock Island October 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 October 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 October’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 October’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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