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October Weather in Carol Stream, United States

Last updated: June 24, 2025

In October, the average temperature in Carol Stream, United States hovers around 12°C (54°F). Expect a wide range, with minimum temperatures dipping as low as -5°C (23°F) and maximums reaching up to 31°C (87°F). This month, the area experiences around 127 mm (5.0 in) of precipitation spread over 12 days, contributing to an average humidity level of 82%.

October Temperature in Carol Stream

In October in Carol Stream, the average temperature is 12°C (54°F). The maximum can reach 31°C (87°F), and the minimum can be as low as -5°C (23°F). This wide temperature range makes Carol Stream an exciting destination for travelers, offering both warm and chilly experiences throughout the month.

October Weather in Carol Stream: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Carol Stream, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carol Stream, October typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (87°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec242739486071757267543832
Data source: Temperature data for Carol Stream 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 Carol Stream

In Carol Stream in October, the precipitation amount is 127 mm (5.0 in) occurring over the course of 12 days.

October Precipitation Trends in Carol Stream

The chart displays monthly precipitation patterns in Carol Stream, 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 Carol Stream, October typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec61598111716914010699911275453
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Carol Stream

In Carol Stream in October humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

October Average Humidity in Carol Stream

This chart illustrates the average monthly humidity levels in Carol Stream, 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 Carol Stream is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Carol Stream

In Carol Stream in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Carol Stream, you can refer to this Hourly UV Index in Carol Stream.

Maximum UV Index Levels in Carol Stream for October

The chart shows the monthly maximum UV Index (UVI) for Carol Stream 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 Carol Stream typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098632
Data source: Carol Stream 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 Carol Stream Compares to Other Months

Weather in Carol Stream varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Carol Stream, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Carol Stream, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)61 mm (2.4 inches)82%moderate
February Weather-3°C (27°F)59 mm (2.3 inches)83%moderate
March Weather4°C (39°F)81 mm (3.2 inches)84%high
April Weather9°C (48°F)117 mm (4.6 inches)85%very high
May Weather16°C (61°F)168 mm (6.6 inches)79%very high
June Weather22°C (72°F)140 mm (5.5 inches)82%very high
July Weather24°C (75°F)106 mm (4.2 inches)80%very high
August Weather22°C (73°F)99 mm (3.9 inches)81%very high
September Weather19°C (67°F)91 mm (3.6 inches)80%very high
October Weather12°C (54°F)127 mm (5.0 inches)82%high
November Weather3°C (38°F)54 mm (2.1 inches)88%moderate
December Weather0°C (32°F)53 mm (2.1 inches)84%low

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