Chicago Weather Averages

Climate averages for Chicago based on 10 years of historical data.

Average Chicago temperatures by month

Avg high

0°

J

1°

F

7°

M

12°

A

18°

M

24°

J

26°

J

26°

A

24°

S

17°

O

9°

N

4°

D

Avg low

-6°

J

-5°

F

0°

M

5°

A

11°

M

17°

J

20°

J

20°

A

17°

S

10°

O

3°

N

-2°

D

Average rainfall in Chicago by month

Rainfall (mm)

67

J

65

F

97

M

116

A

152

M

134

J

170

J

121

A

111

S

136

O

72

N

73

D

Sunshine hours in Chicago by month

Sunshine (h/day)

2

J

2

F

3

M

3

A

4

M

5

J

4

J

4

A

5

S

4

O

3

N

2

D

Humidity in Chicago by month

Average humidity

80%

J

78%

F

72%

M

71%

A

74%

M

73%

J

74%

J

71%

A

68%

S

66%

O

69%

N

75%

D

Month-by-month averages

Month	Avg High	Avg Low	Rainfall	Sunshine
Vær i januar	0°C	-6°C	67 mm	1.8h
Vær i februar	1°C	-5°C	65 mm	2.5h
Vær i mars	7°C	0°C	97 mm	2.9h
Vær i april	12°C	5°C	116 mm	3.3h
Vær i mai	18°C	11°C	152 mm	4.1h
Vær i juni	24°C	17°C	134 mm	5.0h
Vær i juli	26°C	20°C	170 mm	4.2h
Vær i august	26°C	20°C	121 mm	4.5h
Vær i september	24°C	17°C	111 mm	4.7h
Vær i oktober	17°C	10°C	136 mm	3.5h
Vær i november	9°C	3°C	72 mm	3.0h
Vær i desember	4°C	-2°C	73 mm	2.1h