Des Plaines (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Des Plaines.
Climate overview of Des Plaines
The climate in Des Plaines, Illinois, United States of America, is marked by large temperature swings across the seasons, ranging from 29°C (84°F) in July to 0°C (32°F) in January.
The city receives considerable rain/snowfall, with around 1063 mm (42 in) annually. June is the wettest month. July is the sunniest month, averaging 10.6 hours of sunshine per day.
Des Plaines Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Des Plaines — and find the best time to visit.
Monthly Temperature in Des Plaines
In Des Plaines, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 29°C (84°F) in July to a very cold 0°C (32°F) in the coolest month, January.
Nights vary from 18°C (64°F) in July to around -9°C (16°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Des Plaines
Des Plaines experiences significant rain/snowfall throughout the year, averaging 1063 mm (42 in) of precipitation annually. The climate in Des Plaines shows significant variation throughout the year. Expect high rainfall in June, the wettest month, with an average of 125 mm (4.9 in) of precipitation over 14 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 49 mm (1.9 in) 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 Hours in Des Plaines
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
Humidity in Des Plaines by Month
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%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Des Plaines
The mean wind speed varies between 4 m/s (8 knots) and 6 m/s (12 knots) throughout the year. It is lowest in June, July, August and September and highest during January, March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Des Plaines
Frequently asked questions about the climate in Des Plaines
What is the best time to visit Des Plaines?
May, June, July, August and September typically offer the most optimal weather in Des Plaines. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Des Plaines?
Daytime highs range from 0°C (32°F) in January to 29°C (84°F) in July. Nighttime lows range from -9°C (16°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Des Plaines get?
Annual rainfall is around 1063 mm (42 in). June is the wettest month with 125 mm (4.9 in), while January is the driest with 49 mm (1.9 in).
How sunny is Des Plaines?
Des Plaines receives around 2,509 hours of sunshine per year. July is the sunniest month with 319 hours, while December is the cloudiest with just 107 hours. Overall, Des Plaines enjoys abundant sunshine.
Des Plaines 3-Day Forecast
Des Plaines (IL) 3-Day Forecast
Des Plaines on the map
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