Average daily temperatures in Chicago, Illinois, including the lower and upper bounds of the 95% confidence interval. Due to the possibility of missing data, the actual day counts used in the average and confidence interval calculations are provided. The table is also offered in degrees of Celsius.
January | February | March | April | May | June | July | August | September | October | November | December | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 23 27 32 | 22 28 33 | 28 33 37 | 41 45 50 | 52 56 61 | 62 65 69 | 70 73 76 | 74 77 80 | 69 72 74 | 55 59 63 | 43 48 52 | 30 34 37 |
2 | 21 28 34 | 19 25 31 | 28 31 35 | 42 47 51 | 51 55 59 | 61 64 67 | 70 74 77 | 74 77 80 | 69 72 75 | 54 58 63 | 43 47 52 | 30 35 40 |
3 | 21 27 34 | 18 24 31 | 24 28 32 | 44 48 52 | 50 55 60 | 58 61 64 | 71 74 77 | 74 76 78 | 69 72 74 | 53 58 63 | 39 44 49 | 30 36 43 |
4 | 21 27 33 | 17 23 30 | 26 30 34 | 40 45 49 | 52 56 60 | 59 62 65 | 71 75 78 | 73 76 78 | 67 69 72 | 54 58 62 | 41 45 50 | 28 35 42 |
5 | 20 27 33 | 17 23 29 | 29 33 37 | 38 43 48 | 56 59 62 | 61 64 68 | 71 75 78 | 72 74 76 | 65 69 72 | 52 56 61 | 41 44 48 | 25 32 39 |
6 | 22 28 33 | 22 27 31 | 29 34 38 | 42 47 52 | 57 60 63 | 62 66 70 | 72 75 78 | 72 74 77 | 69 71 74 | 53 57 62 | 42 45 49 | 23 29 36 |
7 | 20 26 32 | 24 28 33 | 28 35 41 | 40 45 49 | 55 58 61 | 64 68 73 | 72 75 77 | 72 75 77 | 68 70 73 | 50 56 61 | 43 46 50 | 23 29 35 |
8 | 22 27 33 | 22 27 31 | 28 34 41 | 39 44 48 | 56 59 62 | 63 68 73 | 72 75 77 | 73 75 77 | 66 68 71 | 52 57 63 | 40 45 49 | 24 29 33 |
9 | 23 28 33 | 23 28 34 | 28 34 39 | 39 43 46 | 57 60 63 | 65 69 72 | 72 75 77 | 72 75 77 | 64 67 70 | 54 58 62 | 40 46 51 | 23 29 34 |
10 | 23 27 32 | 22 28 35 | 28 33 38 | 41 45 49 | 55 59 63 | 65 69 72 | 71 74 76 | 72 74 77 | 64 67 70 | 52 56 60 | 41 46 51 | 24 30 35 |
11 | 21 27 33 | 19 26 33 | 32 37 41 | 44 49 54 | 54 57 61 | 65 69 73 | 71 73 75 | 70 73 75 | 65 67 70 | 52 56 60 | 37 42 46 | 25 29 33 |
12 | 24 30 36 | 22 26 30 | 32 37 43 | 42 47 52 | 51 56 61 | 65 68 72 | 72 74 76 | 69 72 76 | 66 68 71 | 53 57 62 | 36 41 46 | 24 29 34 |
13 | 22 27 32 | 23 26 29 | 34 39 45 | 43 47 51 | 52 55 59 | 65 68 71 | 72 75 77 | 70 73 76 | 65 68 71 | 52 57 61 | 37 42 47 | 25 30 35 |
14 | 19 23 28 | 26 30 33 | 36 41 46 | 46 51 55 | 54 57 61 | 67 69 72 | 74 76 79 | 69 72 75 | 63 66 69 | 50 54 58 | 37 42 47 | 28 33 37 |
15 | 18 23 28 | 25 29 33 | 34 40 45 | 49 55 60 | 54 59 63 | 67 69 71 | 75 77 80 | 71 73 76 | 60 63 66 | 49 52 56 | 37 41 44 | 27 32 37 |
16 | 19 24 29 | 23 28 33 | 34 39 43 | 47 52 57 | 55 59 64 | 69 71 74 | 77 79 80 | 72 74 76 | 60 63 66 | 49 53 56 | 36 40 43 | 26 31 36 |
17 | 19 24 29 | 24 28 33 | 35 41 47 | 44 49 54 | 55 59 63 | 67 71 74 | 76 79 82 | 71 73 74 | 63 65 67 | 48 52 56 | 34 38 43 | 23 28 33 |
18 | 17 23 29 | 24 29 35 | 36 41 46 | 46 51 56 | 55 60 64 | 68 71 75 | 74 77 80 | 70 72 74 | 62 65 67 | 48 52 55 | 35 40 45 | 21 27 33 |
19 | 17 22 27 | 25 30 34 | 36 41 45 | 49 53 58 | 57 62 67 | 68 71 75 | 73 76 79 | 68 71 73 | 63 66 69 | 49 52 55 | 37 41 46 | 22 29 35 |
20 | 17 21 26 | 27 31 36 | 36 41 46 | 47 51 55 | 58 63 67 | 69 73 76 | 72 75 78 | 69 72 74 | 61 64 67 | 47 51 54 | 36 40 44 | 21 26 31 |
21 | 17 22 26 | 28 31 35 | 34 40 46 | 46 50 54 | 57 60 64 | 71 74 77 | 73 77 80 | 69 72 75 | 59 62 66 | 48 52 56 | 35 39 42 | 21 26 31 |
22 | 19 24 30 | 28 31 35 | 34 40 45 | 47 50 54 | 57 61 65 | 71 73 76 | 72 74 77 | 70 73 75 | 58 62 65 | 47 50 53 | 34 40 45 | 18 26 33 |
23 | 19 24 30 | 28 32 36 | 38 41 45 | 47 51 55 | 58 61 65 | 70 73 76 | 71 74 77 | 70 72 74 | 57 61 64 | 47 51 55 | 35 40 45 | 21 26 32 |
24 | 17 22 28 | 28 32 37 | 37 42 47 | 48 52 55 | 56 61 66 | 71 74 78 | 71 74 77 | 71 73 75 | 57 61 65 | 47 51 55 | 32 36 41 | 21 25 30 |
25 | 17 22 26 | 29 34 39 | 37 43 48 | 49 53 56 | 55 59 63 | 72 75 78 | 73 75 78 | 71 73 75 | 57 61 64 | 47 51 55 | 32 37 41 | 18 24 29 |
26 | 19 24 28 | 28 33 38 | 35 41 48 | 49 50 52 | 56 60 64 | 72 74 77 | 73 76 78 | 71 73 75 | 58 61 65 | 48 52 56 | 33 38 42 | 22 26 29 |
27 | 20 25 30 | 29 33 37 | 37 43 49 | 47 51 54 | 57 61 65 | 72 74 76 | 72 74 77 | 71 73 75 | 58 61 64 | 45 49 54 | 33 38 42 | 23 28 33 |
28 | 19 25 30 | 27 31 34 | 39 44 49 | 48 51 54 | 59 64 68 | 72 75 78 | 73 76 78 | 70 72 74 | 57 59 61 | 43 47 50 | 32 37 42 | 24 29 33 |
29 | 21 27 33 | 20 38 56 | 39 43 46 | 49 53 57 | 60 64 69 | 70 73 76 | 73 75 78 | 69 72 75 | 55 58 61 | 44 48 51 | 33 38 43 | 26 30 34 |
30 | 18 24 30 | 40 45 50 | 51 55 59 | 63 66 70 | 70 73 76 | 73 76 79 | 68 71 74 | 56 60 64 | 47 51 55 | 34 38 42 | 26 31 36 | |
31 | 18 24 30 | 42 47 51 | 63 67 71 | 73 77 80 | 69 72 75 | 47 51 55 | 28 33 38 |