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October Weather in Joliet, United States

Last updated: June 24, 2025

In October, the average temperature in Joliet, United States hovers around 13°C (55°F). Expect a range of temperatures from a chilly -4°C (26°F) at night to a warm 31°C (89°F) during the day. The area experiences approximately 138 mm (5.4 in) of precipitation spread over about 12 days, contributing to an average humidity level of 82%.

October Temperature in Joliet

In October in Joliet, the average temperature is 13°C (55°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop to as low as -4°C (26°F). Be prepared for a wide range of weather conditions, from warm days to chilly nights, making it essential to pack accordingly for your travels.

October Weather in Joliet: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Joliet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joliet, October typically has an average temperature of 13°C (55°F), with highs reaching up to 31°C (89°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec262840496172767368553934
Data source: Temperature data for Joliet 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 Joliet

In Joliet in October, the precipitation amount is 138 mm (5.4 in) spread over a period of 12 days.

October Precipitation Trends in Joliet

The chart displays monthly precipitation patterns in Joliet, 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 Joliet, October typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec65679312215914311486821386156
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Joliet

In Joliet in October, humidity is 82%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities sticky and uncomfortable for traveling.

October Average Humidity in Joliet

This chart illustrates the average monthly humidity levels in Joliet, 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 Joliet 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 Joliet

In Joliet 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 Joliet, you can refer to this Hourly UV Index in Joliet.

Maximum UV Index Levels in Joliet for October

The chart shows the monthly maximum UV Index (UVI) for Joliet 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 Joliet typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: Joliet 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 Joliet Compares to Other Months

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

This table compares monthly weather conditions in Joliet, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)65 mm (2.6 inches)82%moderate
February Weather-2°C (29°F)67 mm (2.6 inches)83%moderate
March Weather4°C (40°F)93 mm (3.7 inches)84%high
April Weather9°C (49°F)122 mm (4.8 inches)85%very high
May Weather16°C (62°F)159 mm (6.3 inches)79%very high
June Weather22°C (72°F)143 mm (5.6 inches)82%very high
July Weather24°C (76°F)114 mm (4.5 inches)80%very high
August Weather23°C (74°F)86 mm (3.4 inches)81%very high
September Weather20°C (68°F)81 mm (3.2 inches)80%very high
October Weather13°C (55°F)138 mm (5.4 inches)82%high
November Weather4°C (40°F)61 mm (2.4 inches)88%moderate
December Weather1°C (34°F)56 mm (2.2 inches)84%low

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