Weather in Chicago in May
May in Chicago is cool with average temperatures around 11.8°C (53.2°F). Expect significant rainfall with 117mm across approximately 13 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
15.0°C
59.0°F
Low
8.6°C
47.5°F
Precipitation
117 mm
4.6 inches
~13 rainy days
Conditions
Humidity
83%
Comparison to Adjacent Months
May is 4.8°C warmer than April, 23mm wetter than April.
May is 6.3°C cooler than June.