Evanston (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Evanston.
Climate overview of Evanston
Evanston, Illinois, United States of America, sees big temperature differences between seasons, with July peaking at 28°C (82°F) and January dropping to 1°C (34°F).
Rain/snowfall is high, totalling around 1079 mm (42 in) per year. June is the wettest month and January the driest. The most sunshine falls in July, with an average of 10.6 hours of daily sunshine.
Evanston Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Evanston — and find the best time to visit.
Monthly Temperature in Evanston
Visitors to Evanston can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold 1°C (34°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in July to around -7°C (19°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Evanston
Evanston is known for its substantial rain/snowfall, with annual precipitation reaching 1079 mm (42 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 127 mm (5 in) of precipitation, recorded across 14 rainy days. In contrast, the driest month January brings less snowfall, with 52 mm (2 in) over 10 snowy days. For more details, please visit our Evanston 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 Evanston
Seasonal changes in sunshine hours are quite dramatic in Evanston. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Evanston by Month
The relative humidity is high throughout the year in Evanston.
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 Evanston
The average wind speed over the year ranges from 4 m/s (8 knots) to 6 m/s (12 knots). It is lower in June, July, August and September and higher in January, March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Evanston
The weather does bring rainfall during this period, between 99 mm (3.9 in) and 127 mm (5 in). Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
Frequently asked questions about the climate in Evanston
What is the best time to visit Evanston?
September typically offers the most optimal weather in Evanston. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Evanston?
Daytime highs range from 1°C (34°F) in January to 28°C (82°F) in July. Nighttime lows range from -7°C (19°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Evanston get?
Annual rainfall is around 1079 mm (42 in). June is the wettest month with 127 mm (5 in), while January is the driest with 52 mm (2 in).
How sunny is Evanston?
Evanston 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, Evanston enjoys abundant sunshine.
Evanston 3-Day Forecast
Evanston (IL) 3-Day Forecast
Evanston on the map
Evanston is highlighted — select any city to see its climate.
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