Weather & Climate at Naval Station Great Lakes

North Chicago, IL

Summary of the weather and climate in North Chicago, IL:

The average high is 58.3°F and the average low is 40°F.
The hottest month is July with a high of 82.6°F.
The coldest month is January with a low of 15.9°F.
Annual rainfall is 37.75 inches; the rainiest month is August (4.77 in).
Annual snowfall is 33.4 inches; the snowiest month is January (11.2 in).

Source: NOAA climate normals.

Temperatures through the year

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bars span each month's average low to average high (10°F – 90°F scale).

Month	High (°F)	Low (°F)	Rain (in)	Snow (in)
January	31.6	15.9	1.81	11.2
February	35.7	19.1	1.73	7.9
March	45.4	28.2	2.37	5.4
April	56.7	37.9	3.58	0.9
May	67.5	47.2	4.01	0
June	77.7	57	3.67	0
July	82.6	63.1	3.63	0
August	81.3	62.3	4.77	0
September	74.4	53.9	3.48	0
October	62.3	41.9	3.24	0.1
November	48.9	32.8	3.06	1.4
December	35.7	20.4	2.4	6.5