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