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The table shows the combined weather forecast in Chicago for three days ahead, automatically compiled according to several independent sources. The time is local. The atmospheric pressure in mm of mercury - at the level of the city (station).
The indicators of Tef (effective temperature), Tefs (effective sun temperature) and verbal characteristics of weather comfort are given (see explanations below).

Weather in Chicago

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
13.12
Sat
day
12 h
Mostly cloudy -13 747 NW
4 m/s
0.0 -20 -20
13.12
Sat
day
15 h
Cloudy -14 749 NW
4 m/s
0.0 -22 -22
13.12
Sat
even
18 h
Cloudy -14 749 W
4 m/s
0.0 -21 -21
13.12
Sat
even
21 h
Mostly cloudy -14 749 W
5 m/s
0.1 -23 -23
14.12
Sun
night
00 h
Light cloudy -14 751 W
4 m/s
0.0 -22 -22
14.12
Sun
night
03 h
Clear -16 751 NW
5 m/s
0.0 -25 -25
14.12
Sun
morn
06 h
Light cloudy -18 753 NW
5 m/s
0.0 -27 -27
14.12
Sun
morn
09 h
Clear -19 754 NW
5 m/s
0.0 -29 -29
14.12
Sun
day
12 h
Clear -20 756 NW
5 m/s
0.0 -29 -29
14.12
Sun
day
15 h
Clear -19 758 NW
4 m/s
0.0 -27 -26
14.12
Sun
even
18 h
Clear -15 758 NW
4 m/s
0.0 -23 -21
14.12
Sun
even
21 h
Clear -14 758 W
3 m/s
0.0 -21 -20
15.12
Mon
night
00 h
Light cloudy -15 758 W
3 m/s
0.0 -21 -21
15.12
Mon
night
03 h
Partly cloudy -16 756 SW
3 m/s
0.0 -22 -22
15.12
Mon
morn
06 h
Partly cloudy -14 754 SW
4 m/s
0.0 -22 -22
15.12
Mon
morn
09 h
Mostly cloudy -14 752 S
5 m/s
0.0 -22 -22
15.12
Mon
day
12 h
Mostly cloudy -13 749 S
6 m/s
0.0 -22 -22
15.12
Mon
day
15 h
Mostly cloudy -11 747 SW
6 m/s
0.0 -19 -19
15.12
Mon
even
18 h
Light cloudy -6 745 SW
6 m/s
0.0 -13 -12
15.12
Mon
even
21 h
Light cloudy -4 744 SW
4 m/s
0.0 -9 -9
16.12
Tue
night
00 h
Clear -5 744 W
2 m/s
0.0 -8 -8
16.12
Tue
night
03 h
Light cloudy -6 745 W
2 m/s
0.0 -9 -9
16.12
Tue
morn
06 h
Light cloudy -5 745 W
1 m/s
0.0 -5 -5
Sat, 13.12
Sat
Sat
Sat
Sat
Sun
Sun
Sun
Sun
12 h
15 h
18 h
21 h
00 h
03 h
06 h
09 h
Air temperature,°С
-13
-14
-14
-14
-14
-16
-18
-19
Atmospheric pressure
747
749
749
749
751
751
753
754
Wind
NW
4 m/s
NW
4 m/s
W
4 m/s
W
5 m/s
W
4 m/s
NW
5 m/s
NW
5 m/s
NW
5 m/s
Precipitation, mm
0.0
0.0
0.0
0.1
0.0
0.0
0.0
0.0
Tef,°C
-20
-22
-21
-23
-22
-25
-27
-29
Tefs,°C
-20
-22
-21
-23
-22
-25
-27
-29
Weather comfort
 
 
 
 
 
 
 
 
Sun
Sun
Sun
Sun
Mon
Mon
Mon
Mon
12 h
15 h
18 h
21 h
00 h
03 h
06 h
09 h
Air temperature,°С
-20
-19
-15
-14
-15
-16
-14
-14
Atmospheric pressure
756
758
758
758
758
756
754
752
Wind
NW
5 m/s
NW
4 m/s
NW
4 m/s
W
3 m/s
W
3 m/s
SW
3 m/s
SW
4 m/s
S
5 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-29
-27
-23
-21
-21
-22
-22
-22
Tefs,°C
-29
-26
-21
-20
-21
-22
-22
-22
Weather comfort
 
 
 
 
 
 
 
 
Mon
Mon
Mon
Mon
Tue
Tue
Tue
12 h
15 h
18 h
21 h
00 h
03 h
06 h
Air temperature,°С
-13
-11
-6
-4
-5
-6
-5
Atmospheric pressure
749
747
745
744
744
745
745
Wind
S
6 m/s
SW
6 m/s
SW
6 m/s
SW
4 m/s
W
2 m/s
W
2 m/s
W
1 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-22
-19
-13
-9
-8
-9
-5
Tefs,°C
-22
-19
-12
-9
-8
-9
-5
Weather comfort
 
 
 
 
 
 
 
 
  • Sat, 13.12
  • Sun, 14.12
  • Mon, 15.12
Location of a geographical point Chicago (Illinois, USA): latitude 41.9950 longitude -87.9336 height above sea level 203 m.
Navigation:
Notes:
Tef - Effective temperature - the temperature felt by a seasonally dressed person in the shade. The calculation takes into account the influence of humidity, wind speed and atmospheric pressure on the human heat perception.
Tefs - Effective sun temperature - the temperature that a person feels, adjusted for solar radiation. Depends on the amount of cloud cover and the height of the sun above the horizon. At night and in cloudy weather the correction is zero.
Weather comfort - a verbal characteristic that characterizes the favorability or unfavorability of forecast meteorological conditions for a seasonally dressed person. Both relative characteristics are used: warm, cool, cold, very cold, showing how much the expected Tef will be higher or lower than the norm, and absolute ones: the risk of sunstroke, the risk of overheating, hot, very hot, stuffy, very stuffy, comfort, the risk of colds, the risk of frostbite that occur when the Tef, Tefs, air temperature or a combination of certain criteria are reached.