Best Time to Visit Chicago
The best time to visit Chicago is September. You get the ideal intersection of mild weather, thinning summer crowds, and full access to everything the city offers. Daytime temperatures hover in the 70s°F. Lake Michigan remains warm enough for the beaches, but the humidity of July and August has evaporated. Hotel rates start to drop from their summer peaks as business travel stabilizes and student tourism ends. If you want the quintessential Chicago experience—patio dining, architectural boat tours, and Cubs games without the sweltering heat or lakefront wind chill—book your trip for September.
Chicago Month by Month
January
January is the coldest month in Chicago. Highs average 31°F and lows dip to 18°F, though wind chill can push "real feel" temperatures well below zero. Crowds are non-existent and hotel prices are at their annual lowest. This is the time for museum hopping to avoid the wind.
- Event: Chicago Sketch Comedy Festival.
- Thing to do: Indoor ice skating at the McCormick Tribune Ice Rink when the crowds vanish post-holidays.
February
Expect gray skies and heavy snowfall. Temperatures remain stagnant between 20°F and 35°F. It is the cheapest time to visit Chicago if you stay indoors. The lakefront is often frozen, providing stark, beautiful visuals, but outdoor walking is difficult.
- Event: Chicago Auto Show at McCormick Place.
- Thing to do: Take advantage of Chicago Theatre Week for deeply discounted tickets to world-class stage productions.
March
Weather in March is unpredictable. Highs reach the mid-40s°F, but "Thundersnow" is a legitimate possibility. It is a shoulder month with moderate pricing, except during the St. Patrick’s Day weekend when the city fills up.
- Event: Dyeing of the Chicago River green.
- Thing to do: Visit the Garfield Park Conservatory to escape the lingering winter chill in a tropical climate.
April
Spring begins slowly. Temperatures range from 40°F to 60°F. Rain is frequent. You will see fewer tourists than in summer, but Lake Michigan is still too cold for beach activity. Trees begin to bud late in the month.
- Event: Expo Chicago (International Exposition of Contemporary & Modern Art).
- Thing to do: Watch the season opener at Wrigley Field or Guaranteed Rate Field—just bring a heavy jacket.
May
May is when the city wakes up. Temperatures rise to a comfortable 65°F-70°F. Flowers bloom across the Magnificent Mile. Prices begin to rise as tourism picks up, but it remains manageable compared to July.
- Event: Mole de Mayo Festival in Pilsen.
- Thing to do: Walk the Chicago Riverwalk before the summer humidity makes the midday sun oppressive.
June
June marks the start of peak season. Expect highs in the late 70s°F and occasional humidity. Every weekend features a neighborhood street festival. Crowds increase at major landmarks like Millennium Park, and hotel rates climb accordingly.
- Event: Chicago Blues Festival.
- Thing to do: Take an Architecture Foundation River Cruise to see the city’s skyline from the water in perfect light.
July
July is hot, humid, and crowded. Temperatures average 84°F but often spike into the 90s. This is the busiest month for tourism. Expect long lines at the Willis Tower and crowded beaches. Prices are at their peak.
- Event: Taste of Chicago or Lollapalooza.
- Thing to do: Head to North Avenue Beach for volleyball and Lake Michigan swimming to beat the heat.
August
August remains hot and humid, with temperatures matching July. It is the best month for water temperatures in the lake. While schools start returning to session late in the month, the city remains packed with international travelers.
- Event: Chicago Air and Water Show.
- Thing to do: Kayak the Chicago River through the canyon of skyscrapers in the downtown Loop.
September
September provides the best weather of the year. Highs stay near 75°F. The humidity breaks, and the "Lake Effect" keeps the evenings crisp but pleasant. Crowds drop significantly after Labor Day. You can find better hotel deals than in mid-summer.
- Event: Chicago Jazz Festival.
- Thing to do: Bike the 18-mile Lakefront Trail without fighting the mid-summer pedestrian traffic.
October
October brings fall colors and cool breezes. Temperatures range from 50°F to 65°F. It is a favorite for locals. You will need a light jacket, but outdoor dining is still viable. Prices are moderate.
- Event: The Chicago Marathon.
- Thing to do: Visit Open House Chicago to tour hidden architectural gems not usually open to the public.
November
The transition to winter is abrupt. Highs drop to 48°F and lows reach 34°F. Wind speeds pick up, earning the city its "Windy City" moniker. Tourism slows down, making it a good time for restaurant reservations.
- Event: The Magnificent Mile Lights Festival.
- Thing to do: Start your holiday shopping early on Michigan Avenue before the December rush begins.
December
Chicago embraces the holiday season despite temperatures between 25°F and 35°F. The city is festive but crowded with regional shoppers. Hotel prices spike around New Year’s Eve but remain lower than summer peaks.
- Event: Christkindlmarket in Daley Plaza.
- Thing to do: View the holiday lights at Lincoln Park Zoo (ZooLights) or the Morton Arboretum.
Cheapest Time to Visit Chicago
The cheapest time to visit Chicago is from January through March. Once the holiday decorations come down in the first week of January, hotel occupancy rates plummet. You can often find luxury hotels in the Loop or River North for 50% less than their summer rates.
Aviation costs follow a similar trend. O'Hare and Midway airports see a dip in demand during these months. Keep in mind that while your flight and hotel will be cheap, you will spend more on taxis and Ubers to avoid walking in the sub-zero wind chill. If you are on a budget, plan your "to-do" list around the city's Museum Campus—The Field Museum, Adler Planetarium, and Shedd Aquarium—where you can stay indoors for hours.
When to Avoid Chicago
Avoid Chicago in late July and early August if you dislike crowds and high humidity. This is the peak of the festival season. Events like Lollapalooza bring hundreds of thousands of people into the city center, causing surge pricing on rideshare apps and making public transit incredibly cramped.
If you are sensitive to extreme cold, avoid Chicago in late January and all of February. Polar vortexes can bring "real feel" temperatures to -20°F. During these periods, some outdoor attractions close, and the city enters a functional hibernation. Unless you have a specific indoor event to attend, the weather during these two months can significantly limit your ability to explore the city's world-class architecture.
Best Time for Good Weather
For the best weather, book your trip between mid-May and June or throughout the month of September.
- May/June: You catch the spring bloom. The air is fresh, and you avoid the "swampy" feel of the Midwestern summer. It's the best time for walking tours.
- September: This is the "Goldilocks" zone. You get the warmth of the sun without the humidity. Thunderstorms are less frequent than in June or July. The Lake Michigan water is still warm from the summer sun, making it the best time for boat tours or beach walks.
While "good weather" is subjective, these windows offer the most consistent temperatures for being outdoors for more than four hours at a time.
Best Time for Fewer Crowds
To avoid crowds while still enjoying manageable weather, visit in late April or October. These "shoulder" seasons offer a balance between comfort and quiet.
- April: Most families wait for summer break to travel. You will find shorter lines at Skydeck Chicago and 360 Chicago.
- October: Once the Chicago Marathon finishes (usually the second Sunday of the month), the city calms down. You can get into top-tier restaurants like au Cheval or Girl & the Goat with much shorter wait times than in July.
If you strictly care about crowds and don't care about weather, February is the deadest month in the city. You will have the Art Institute of Chicago’s galleries almost to yourself.