Des Plaines (IL) Weather and Climate: A Comprehensive Guide
The climate in Des Plaines is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to very cold in the cooler months.
It is also known for its large amounts of rain/snowfall.
Now, let’s explore all the climate details to give you a full picture.
Average maximum day and minimum night temperature
In Des Plaines, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 29°C in July to a very cold -0°C in the coolest month, January.
Nights are cooler, with lows often dropping to around -9°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Des Plaines experiences significant rain/snowfall throughout the year, averaging 1063 mm of precipitation annually. The climate in Des Plaines shows significant variation throughout the year. Expect high rainfall in June, with an average of 125 mm of precipitation over 14 rainy days. In contrast, January offers drier and sunnier days, with around 49 mm of snowfall over 10 snowy days. For more details, please visit our Des Plaines Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Des Plaines serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.6 hours of sunshine daily, and embrace the darker days in December, offering only 3.6 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Des Plaines.
The city experiences its highest humidity in December, reaching 76%. In May, the humidity drops to its lowest level at 64%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 4 m/s and 6 m/s throughout the year. It is lowest in June, July, August and September and highest during January, March and April.
The mean monthly wind speed over the year (meters per second)
overcast and no rain overcast and chance of slight rain overcast and rainForecast for Des Plaines (IL)
3 m/s
4 m/s
5 m/s
The best time of year to visit Des Plaines in the United States of America
During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
The coldest season / winter is in the following months: January, February and December.
July has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of -0°C.
June tops the wettest month list with 125 mm of rainfall.
January is the driest month with 49 mm of precipitation.
July is the sunniest month with an average of 319 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
