Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October's onset corresponds with a shift in the average high-temperature, moving from an agreeable 71.1°F (21.7°C) in September to a mild 59.5°F (15.3°C). Chicago observes an average low-temperature of 48.9°F (9.4°C) during October.Humidity
October is the least humid month, with an average relative humidity of 73%.Rainfall
In Chicago, during October, the rain falls for 14.2 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Chicago, during the entire year, the rain falls for 160.2 days and collects up to 36.97" (939mm) of precipitation.Snowfall
June through October are months without snowfall.Ocean temperature
In Chicago, Illinois, the average seawater temperature in October is 58.8°F (14.9°C).Note: Without suitable protection, venturing into 58.8°F (14.9°C) waters cooler than 50°F (10°C) can lead to pronounced cold shock and rapid breaths.
Daylight
In October, the average length of the day is 11h and 4min.On the first day of October, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:45 pm CDT.
Sunshine
The average sunshine in October is 5.9h.UV index
In Chicago, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 2 in October transforms into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the least humid month?
What is the average humidity in October?
How many days does it rain in October in Chicago?
When it does not snow?
Does it snow in October?
How cold is the water in October?
How many hours of daylight does Chicago have in October?
What time are sunrise and sunset in October?
How long on average sun shines in October?
How high is the UV index in October?
Average temperature in October
Chicago, IL
- Average high temperature in October: 59.5°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in October: 48.9°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in October
Chicago, IL
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Chicago, IL
- Average wind speed in October: 11.3mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in October
Chicago, IL
- Average humidity in October: 73%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in October
Chicago, IL
- Average rainfall in October: 3.11"
The wettest month (with the highest rainfall) is June (4.88").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in October
Chicago, IL
- Average rainfall days in October: 14.2 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in October
Chicago, IL
- Average snowfall in October: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in October
Chicago, IL
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in October
Chicago, IL
- Average sea temperature in October: 58.9°F
The best month for swimming (with the highest average sea temperature) is August (73.9°F).
The coldest month (with the lowest average sea temperature) is February (36.9°F).
Average daylight in October /
Average sunshine in October
Chicago, IL
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 5h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
Chicago, IL
- Average sunshine days in October: 14.2 days
The month with the most sunshine days is December (15.5 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in October
Chicago, IL
- Average UV index in October: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Chicago, IL
- Average cloud cover in October: 41
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in October
Chicago, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Chicago, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location