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Oak Lawn, IL Climate
1991 to 2020 normals at Chicago Midway AP 3sw, 2.6 mi from the center of Oak Lawn, elevation 620 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 33° | 20° | 2.30 in | 12.5 in | |
| February | 37° | 23° | 2.12 in | 10.1 in | |
| March | 48° | 32° | 2.66 in | 5.7 in | |
| April | 60° | 42° | 4.15 in | 1.0 in | |
| May | 72° | 52° | 4.75 in | 0.0 in | |
| June | 81° | 63° | 4.53 in | 0.0 in | |
| July | 85° | 68° | 4.02 in | 0.0 in | |
| August | 83° | 67° | 4.10 in | 0.0 in | |
| September | 77° | 59° | 3.33 in | 0.0 in | |
| October | 64° | 47° | 3.86 in | 0.1 in | |
| November | 50° | 35° | 2.73 in | 1.5 in | |
| December | 38° | 25° | 2.33 in | 7.9 in | |
| Year | 61° | 40.88 in | 38.8 in |
Frequently asked questions
- What is the hottest month in Oak Lawn, IL?
- July is the warmest month, with a normal high of 85°F at Chicago Midway AP 3sw.
- What is the coldest month in Oak Lawn, IL?
- January is the coldest month, with a normal low of 20°F.
- What is the wettest month in Oak Lawn, IL?
- May has the most precipitation on average, about 4.75 inches.