What is the weather like in Chicago in May?

Expect temperatures between 10°C and 18°C with 30% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Chicago in May?

Chicago in May scores 65/100 based on 30 years of climate data. Recommended for planning your trip.

Who should visit Chicago in May?

May in Chicago is ideal for: Cultural tourists, Business travelers, Heat-sensitive visitors.

Chicago Weather in May | 30-Year Forecast

Avg High

18°C

Hottest around day 31

Avg Low

10°C

Coolest around day 1

Rainy Days

26days

30% avg rain chance

Sunshine

8hrs/day

Spring season

Essential Travel Info for Chicago

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Connect

The first Internet café in the United St...

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for Chicago

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub

100/ 100

Traffic Index

Extremely busy airport

Peak Daily Arrivals

slots per day

Peak

Jun

Low

Jan

Monthly Traffic Distribution

1055

Jan

1174

Feb

1315

Mar

1276

Apr

1351

May

1367

Jun

1256

Jul

1331

Aug

1314

Sep

1222

Oct

1139

Nov

1185

Dec

Traffic Level

Low Season

Key Connections

New York La Guardia (LGA)

Dallas-Fort Worth (DFW)

Boston General Edward Lawrence Logan (BOS)

Washington Ronald Reagan National (DCA)

Newark Liberty (EWR)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is May a Good Time to Visit Chicago?

👍Recommended for planning your trip(65/100)

Short Answer

May is Chicago's peak season for good reason: 18°C temperatures and 30% rain probability. But expect crowds (99% of annual maximum) and premium prices.

Decision Factors

Peak tourist season

99% of annual peak - expect crowds and peak prices

Plenty of sunshine

10h of sunshine daily

Exceptional dining scene

105 Michelin-listed restaurants

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather
🌡️
Heat-sensitive visitors
Manageable 17.9°C without oppressive humidity

Who Should Avoid

💰
Budget travelers
Peak season means premium prices everywhere

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Chicago in May averages 18°C with 30% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Chicago in May

What are the temperatures in Chicago in May?

Daytime highs average 18°C, nights drop to 10°C. Temperatures remain fairly consistent.

How many rainy days in Chicago in May?

Expect around 26 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Chicago in May?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is May peak season in Chicago?

This is shoulder season—moderate prices and manageable crowds.

Chicago Weather in May

Chicago May Weather Calendar