United StatesThe weather in October in Illinois
It's pleasantly warm in October in Illinois with an average temperature of 19°C. Temperatures this month range from a low of 11°C to a high of 25°C. At night, you can expect temperatures between 3°C and 15°C.
Looking for great weather? October is a good time to be in Illinois. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in October for Illinois, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Precipitation and snowfall
In October, there is an average of 94 mm of precipitation, spread over 13 days. Of the total precipitation, about 0,6 cm falls as snow in October. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in October for Illinois
Click on any day in October to get detailed info about the usual weather on that day in Illinois. Check out the historical temperatures and precipitation over the past 10 years on this day.
October weather comparison
| Illinois | New York | |
|---|---|---|
| Average temperature | 19°C | 21°C |
| Max. temperature | 25°C | 26°C |
| Min. temperature | 3°C | -5°C |
| Total precipitation | 94 mm | 119 mm |
| Rainy days | 13 days | 13 days |
| Total snowfall | 0,6 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of October
The month of October starts in Illinois with warm temps, averaging around 23°C during the day and nights around 13°C.
Mid October
By mid-October, daytime temps drop to around 19°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of October
By the end of October, the average daytime temperature in Illinois is around 16°C, while nighttime temps are about 7°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Check out the climate of Illinois for all months and discover the best travel time
The climate in Illinois is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Illinois to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in October in Illinois, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in October in Illinois
Temperature in October in Illinois over the years
Precipitation charts
These charts show the average amount of precipitation in October in Illinois, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in October in Illinois
Total precipitation in October in Illinois over the years
Daily Snowfall in October in Illinois
Snowfall in October in Illinois per year
Daily UV index in October in Illinois
This chart shows the average daily UV index in October in Illinois, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in October in Illinois
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Average weather in Illinois by month
Click on a month below to see detailed weather info for Illinois. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.