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Illinois United States of America
Temperatures in October
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Illinois temperatures in October

Illinois is a region in the United States of America. October in has maximum daytime temperatures ranging from moderate in Roscoe with 14°C to pleasant temperatures in Metropolis with 21°C. Nighttime temperatures generally drop to 8°C in Metropolis and 3°C in Roscoe.

What is the temperature of the different cities in Illinois in October?

Find the average daytime temperatures in October for the most popular destinations in Illinois on the map below. Click on a destination dot for more detailed information.

Weather conditions Weather
Temperatures
Precipitation
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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

  • What is the warmest city in October in Illinois?
    • Metropolis tops the warmest city list in our database with average maximum daytime temperatures around 21°C and a minimum nighttime temperature of around 8°C.

  • What is the coldest city in October in Illinois?
    • The coldest city in October in Illinois is Roscoe when we check our database. The maximum daytime temperatures are around 14°C and minimum nighttime temperatures fall around 3°C.

  • How much sun does Illinois get in October?
    • Chicago enjoys approximately 195 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.

    Interested in more climate information?

    We have much more information about the climate in Illinois. Interested in the weather conditions in a specific month? Select the month below.

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