October weather forecastWaukegan, IL
October
Weather in October
October brings a stark contrast to the warmer months with temperatures in Waukegan, Illinois falling more rapidly. Though the fall foliage is a beautiful sight, colder temperatures signal the approach of winter. Cloud cover increases, days shorten, and the need for warmer clothing escalates. As November arrives, one can expect further drops in temperature with winter around the corner.Temperature
Waukegan's October weather features a mild decline in high-temperatures, reducing from an agreeable 70.9°F (21.6°C) in September to a moderate 58.3°F (14.6°C). An average low-temperature of 46.9°F (8.3°C) is recorded during the nights in October in Waukegan, Illinois.Humidity
October and November, with an average relative humidity of 75%, are the least humid months in Waukegan.Rainfall
In Waukegan, Illinois, in October, it is raining for 12.9 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Waukegan, Illinois. October is the first month it typically snows in Waukegan, Illinois. Throughout October, in the average 0.7 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, in Waukegan, there are 45.5 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
In Waukegan, the average length of the day in October is 11h and 3min.On the first day of the month, sunrise is at 6:49 am and sunset at 6:32 pm. On the last day of October, sunrise is at 7:24 am and sunset at 5:45 pm CDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 2 in October translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Waukegan, IL
- Average high temperature in October: 58.3°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in October: 46.9°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in October
Waukegan, IL
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Waukegan, IL
- Average wind speed in October: 10.5mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in October
Waukegan, IL
- Average humidity in October: 75%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in October
Waukegan, IL
- Average rainfall in October: 1.89"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in October
Waukegan, IL
- Average rainfall days in October: 12.9 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in October
Waukegan, IL
- Average snowfall in October: 0.16"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Waukegan, IL
- Average snowfall days in October: 0.7 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Waukegan, IL
- Average daylight in October: 11h and 0min
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 6min).
- Average sunshine in October: 5h and 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
Waukegan, IL
- Average sunshine days in October: 14.6 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in October
Waukegan, 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
Waukegan, IL
- Average cloud cover in October: 43
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
Waukegan, 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).





