Data
| Climate data for Chicago (Midway Airport), 1981–2010 normals | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 67 (19) |
75 (24) |
86 (30) |
92 (33) |
102 (39) |
107 (42) |
109 (43) |
104 (40) |
102 (39) |
94 (34) |
81 (27) |
71 (22) |
109 (43) |
| Average high °F (°C) | 32.1 (0.1) |
36.5 (2.5) |
47.6 (8.7) |
60.0 (15.6) |
70.9 (21.6) |
80.6 (27.0) |
84.8 (29.3) |
82.6 (28.1) |
75.8 (24.3) |
63.2 (17.3) |
49.1 (9.5) |
35.8 (2.1) |
59.9 (15.5) |
| Average low °F (°C) | 18.5 (−7.5) |
22.2 (−5.4) |
31.2 (−0.4) |
41.3 (5.2) |
51.2 (10.7) |
61.4 (16.3) |
66.9 (19.4) |
65.7 (18.7) |
57.5 (14.2) |
45.5 (7.5) |
34.7 (1.5) |
22.7 (−5.2) |
43.2 (6.2) |
| Record low °F (°C) | −25 (−32) |
−20 (−29) |
−7 (−22) |
10 (−12) |
28 (−2) |
35 (2) |
46 (8) |
43 (6) |
29 (−2) |
20 (−7) |
−3 (−19) |
−20 (−29) |
−25 (−32) |
| Precipitation inches (mm) | 2.05 (52.1) |
1.93 (49) |
2.73 (69.3) |
3.63 (92.2) |
4.12 (104.6) |
4.06 (103.1) |
4.01 (101.9) |
3.99 (101.3) |
3.31 (84.1) |
3.23 (82) |
3.42 (86.9) |
2.57 (65.3) |
39.05 (991.9) |
| Snowfall inches (cm) | 11.6 (29.5) |
9.6 (24.4) |
5.5 (14) |
1.0 (2.5) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0.1 (0.3) |
1.3 (3.3) |
8.7 (22.1) |
37.8 (96) |
| Avg. precipitation days (≥ 0.01 in) | 10.7 | 8.8 | 11.2 | 11.1 | 11.4 | 10.3 | 9.9 | 9.0 | 8.2 | 10.2 | 11.2 | 11.1 | 123.1 |
| Avg. snowy days (≥ 0.1 in) | 8.4 | 5.7 | 3.8 | 0.7 | 0 | 0 | 0 | 0 | 0 | 0.1 | 1.8 | 6.7 | 27.3 |
| Percent possible sunshine | 46 | 46 | 51 | 54 | 62 | 68 | 69 | 66 | 60 | 56 | 38 | 37 | 56 |
| Source: NOAA, Sunshine (1961-1990, taken at O'Hare), National Climatic Data Center (records) , | |||||||||||||
Read more about this topic: Climate Of Chicago
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