Weather in Chicago

Best time to visit

The best time to visit Chicago is during the spring and autumn, although both seasons run the risk of rain or thunderstorms. Summertime in the city spells warm, sunny days, with temperatures generally between 26°C (78°F) and 33°C (92°F). But temperatures can soar easily to 38°C (92°F), often combined with heavy humidity, which can make things very sticky and uncomfortable. Winters are brutally cold, when snowfall and cold air from Canada drive temperatures way down. There's also the chill factor, thanks to gusty winds from Lake Michigan. Temperatures can fall below freezing for several consecutive days and snowfall is common.

Night

Weather (night) Temp (min night) Rain (mm) Wind (mph) Humidity Pressure Visibility
Sun
Partly Cloudy Night
Partly cloudy skies
2
0
°C
1.1mm
7
sw
85%
1,005mb
Good
Mon
Clear
Clear skies
1
7
°C
1mm
10
w
48%
1,013mb
Good
Tue
Clear
Clear skies
1
5
°C
1.1mm
7
wsw
69%
1,017mb
Good
Wed
Clear
Clear skies
1
8
°C
1.1mm
10
nnw
52%
1,015mb
Good
Thu
Clear
Clear skies
1
4
°C
0.1mm
6
ene
52%
1,026mb
Good
Fri
Overcast
Overcast skies
1
4
°C
0.1mm
4
e
76%
1,024mb
Good
Sat
Clear
Clear skies
1
8
°C
0.1mm
3
ene
80%
1,020mb
Good
Sun
Sunny
Sunny skies
2
5
°C
0mm
15
sw
68%
1,010mb
Good
Mon
Part Cloud Rain Thunder Day
Patchy light rain with thunder
2
3
°C
0mm
9
ene
64%
1,013mb
Good
Last updated at 04:06, Tuesday 27 August
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Last updated: We update the weather data for Chicago from our weather partner every four hours. The time the last update was received is detailed here.
Actual Forecast Location: We have 830+ weather locations on the worldtravelguide.net website. Where no exact location is available we have used the nearest appropriate forecast point.
Symbols indicate the predominant weather for the day in question, calculated based on a weighting of different types of weather. So if a day is forecast to be sunny with the possibility of a brief shower, then we will see a sunny or partly cloudy symbol rather than a rain cloud. For the purpose of this forecast, 'day' is the entire 24 our period 00:00 to 23:59
The maximum temperature is the highest temperature forecast between dawn and dusk, and the minimum temperature is the lowest temperature expected from dusk on the day in question to dawn the next day. The temperature is in °C, or Celsius.
Wind speed and direction are the conditions expected at midday. Wind direction is based on a 16 point compass. W, SW, SSW, etc. The wind direction states where the wind originates. Wind speed is listed in MPH or miles per hour.
Humidity levels indicates how much water vapour the air contains compared to the maximum it could contain at that temperature. As a general guide:
  • 0 to 30 is very low
  • 31 to 50 is low
  • 51 to 70 is moderate to low
  • 71 to 80 is moderate
  • 81 to 90 is moderate to high
  • 91 to 100 is high
Pressure is measured in millibars (mb)
Visibility based on whether the human eye can see the following distances:
  • Very poor - less than 1km
  • Poor - between 1km and 4km
  • Moderate - between 4km and 10km
  • Good - between 10km and 20km
  • Very good - between 20km and 40km
  • Excellent - more than 40km
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Temperature in Chicago

Chicago Average Temperature (degrees C)

Sunlight in Chicago

Chicago Average Sunlight (hours)

Precipitation in Chicago

Chicago Average Precipitation (mm)

Humidity in Chicago

Chicago Humidity (AM and PM %)
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