Average daily temperatures in Rockford, 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 | 20 25 29 | 20 26 31 | 26 31 36 | 40 45 49 | 52 56 60 | 62 66 69 | 69 72 75 | 72 75 78 | 67 70 73 | 53 57 61 | 41 46 50 | 28 32 35 |
2 | 18 24 31 | 16 23 29 | 26 29 33 | 43 47 51 | 52 56 60 | 62 64 67 | 69 72 76 | 73 75 78 | 68 70 73 | 52 57 61 | 40 45 49 | 27 32 38 |
3 | 18 24 30 | 15 22 29 | 22 26 30 | 44 48 52 | 50 55 60 | 60 63 65 | 70 73 75 | 73 75 77 | 67 69 72 | 52 56 61 | 37 42 47 | 27 34 40 |
4 | 19 24 30 | 14 21 27 | 23 28 32 | 40 44 49 | 53 57 60 | 60 63 67 | 70 74 77 | 72 74 76 | 65 68 71 | 52 57 61 | 39 43 47 | 25 32 39 |
5 | 17 23 30 | 15 21 26 | 28 32 36 | 38 43 47 | 57 60 62 | 62 65 69 | 71 73 76 | 71 73 75 | 64 67 70 | 50 55 59 | 38 42 45 | 22 29 36 |
6 | 19 25 31 | 19 24 29 | 27 31 36 | 42 47 51 | 57 60 63 | 62 66 70 | 71 74 77 | 70 73 75 | 67 69 72 | 51 56 60 | 40 43 47 | 21 27 33 |
7 | 17 23 29 | 21 26 31 | 26 32 38 | 41 45 50 | 56 59 62 | 64 68 72 | 71 74 77 | 71 73 76 | 66 68 71 | 49 54 60 | 39 43 47 | 21 27 32 |
8 | 19 25 30 | 20 24 29 | 26 32 38 | 38 43 47 | 56 59 62 | 64 68 72 | 71 74 76 | 71 73 75 | 64 66 69 | 51 56 61 | 38 42 47 | 21 26 31 |
9 | 20 25 31 | 21 26 31 | 27 32 37 | 39 43 47 | 57 60 63 | 65 68 71 | 71 74 76 | 70 73 75 | 62 65 68 | 52 56 60 | 38 43 48 | 20 26 31 |
10 | 19 25 30 | 18 25 32 | 27 32 37 | 41 46 50 | 55 59 63 | 66 69 73 | 70 73 75 | 70 73 75 | 62 65 68 | 49 54 58 | 39 44 48 | 21 27 32 |
11 | 19 25 31 | 17 23 30 | 30 35 40 | 44 49 53 | 54 58 62 | 67 70 73 | 70 72 74 | 68 71 74 | 63 66 69 | 50 54 59 | 35 40 45 | 21 26 31 |
12 | 21 27 33 | 20 24 29 | 30 35 41 | 43 48 52 | 52 57 62 | 66 69 72 | 70 72 74 | 68 71 74 | 63 66 69 | 51 56 60 | 34 39 44 | 20 26 32 |
13 | 19 24 28 | 20 24 28 | 33 38 43 | 43 47 50 | 52 55 59 | 66 69 71 | 71 73 76 | 68 71 74 | 63 65 68 | 51 55 59 | 35 40 44 | 22 27 33 |
14 | 15 21 26 | 24 28 32 | 34 39 44 | 47 51 55 | 54 58 61 | 67 69 72 | 72 75 77 | 68 70 73 | 60 63 66 | 48 51 55 | 36 40 45 | 24 29 34 |
15 | 15 20 26 | 22 27 31 | 32 38 43 | 50 54 59 | 54 59 63 | 66 69 71 | 75 76 78 | 69 71 73 | 58 61 65 | 47 50 54 | 35 39 43 | 24 29 35 |
16 | 16 22 28 | 20 25 30 | 33 38 43 | 47 51 56 | 55 59 63 | 68 71 73 | 74 76 78 | 69 72 74 | 59 62 65 | 47 51 55 | 35 38 42 | 23 28 34 |
17 | 16 22 27 | 22 26 31 | 35 40 46 | 45 51 56 | 56 60 63 | 67 70 73 | 74 77 79 | 69 71 73 | 61 63 66 | 46 50 54 | 32 36 41 | 20 25 29 |
18 | 15 21 26 | 22 27 33 | 35 40 45 | 47 52 57 | 56 60 63 | 69 71 74 | 73 76 79 | 67 69 71 | 61 64 66 | 46 50 53 | 33 38 43 | 18 24 30 |
19 | 15 20 24 | 23 27 32 | 35 39 44 | 48 53 57 | 57 61 65 | 68 71 74 | 71 75 78 | 67 69 72 | 61 64 68 | 47 50 52 | 36 40 43 | 19 25 31 |
20 | 13 18 22 | 25 29 34 | 35 40 45 | 47 51 54 | 59 63 67 | 69 72 75 | 71 74 77 | 68 70 73 | 59 62 65 | 46 49 52 | 35 38 42 | 18 23 28 |
21 | 14 19 24 | 25 29 33 | 34 40 45 | 46 50 54 | 57 60 64 | 71 74 76 | 72 75 78 | 67 70 73 | 57 61 65 | 47 51 54 | 33 36 40 | 18 24 29 |
22 | 16 21 26 | 27 30 33 | 34 39 45 | 47 50 54 | 58 61 65 | 70 72 75 | 70 73 76 | 69 71 74 | 56 60 64 | 45 49 52 | 33 37 42 | 16 23 31 |
23 | 16 21 26 | 26 30 34 | 37 41 45 | 48 52 55 | 59 62 66 | 70 73 76 | 70 73 75 | 69 71 73 | 55 59 63 | 45 49 54 | 33 38 42 | 18 23 29 |
24 | 14 19 25 | 26 31 35 | 37 42 46 | 49 52 56 | 57 62 67 | 70 73 76 | 70 72 75 | 69 71 74 | 55 59 63 | 45 49 54 | 30 34 39 | 17 23 28 |
25 | 15 19 24 | 27 32 37 | 37 42 48 | 49 52 55 | 56 59 63 | 71 74 77 | 71 74 76 | 69 71 73 | 55 59 63 | 45 49 53 | 31 35 39 | 14 21 27 |
26 | 16 21 26 | 27 32 36 | 34 41 47 | 48 50 52 | 57 61 64 | 71 73 76 | 71 74 76 | 69 71 73 | 57 60 63 | 46 50 54 | 30 35 40 | 19 24 28 |
27 | 17 22 27 | 28 31 35 | 37 43 49 | 48 51 55 | 58 62 65 | 72 74 76 | 71 73 76 | 70 72 74 | 56 59 62 | 42 47 51 | 30 35 40 | 21 26 30 |
28 | 15 21 27 | 25 29 33 | 39 44 48 | 48 51 55 | 59 63 68 | 71 73 76 | 72 74 76 | 69 70 72 | 55 58 60 | 41 45 49 | 31 36 41 | 22 26 31 |
29 | 18 25 31 | 19 36 54 | 39 42 46 | 50 54 58 | 61 65 69 | 68 71 74 | 72 74 76 | 68 70 73 | 54 57 60 | 42 46 50 | 30 35 41 | 23 27 31 |
30 | 15 21 27 | 41 45 50 | 51 55 60 | 64 67 71 | 70 72 75 | 72 74 77 | 67 69 71 | 55 59 63 | 46 49 52 | 31 35 40 | 24 29 34 | |
31 | 16 22 29 | 42 46 50 | 63 67 71 | 72 75 78 | 67 70 73 | 44 48 52 | 25 30 36 |