Average daily temperatures in Des Moines, Iowa, 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 | 18 23 29 | 18 25 32 | 26 31 36 | 42 48 53 | 53 57 61 | 64 68 71 | 72 75 78 | 74 77 80 | 70 73 75 | 58 61 65 | 41 47 52 | 29 33 38 |
2 | 17 24 31 | 17 24 32 | 25 29 34 | 45 50 54 | 51 55 60 | 64 66 69 | 73 76 78 | 74 77 80 | 71 74 76 | 54 59 64 | 39 44 49 | 29 34 40 |
3 | 19 24 29 | 15 23 30 | 23 27 31 | 46 51 56 | 50 55 59 | 63 66 70 | 73 75 78 | 76 78 80 | 69 72 75 | 54 59 64 | 38 43 48 | 26 33 39 |
4 | 16 23 30 | 15 21 28 | 26 30 34 | 40 45 50 | 54 58 61 | 64 68 71 | 72 76 79 | 76 77 79 | 67 70 73 | 54 58 62 | 39 44 49 | 26 33 39 |
5 | 16 23 30 | 20 25 29 | 28 33 38 | 43 48 53 | 58 61 64 | 65 68 71 | 72 75 78 | 73 75 77 | 68 71 74 | 54 58 63 | 40 44 48 | 22 29 36 |
6 | 18 24 31 | 22 27 31 | 27 33 39 | 44 50 56 | 58 62 65 | 66 69 72 | 74 76 78 | 72 75 77 | 69 71 74 | 52 57 63 | 42 46 50 | 23 28 33 |
7 | 16 22 28 | 20 26 31 | 27 33 40 | 43 48 54 | 58 61 64 | 68 72 75 | 74 77 80 | 73 76 78 | 67 70 72 | 51 57 63 | 40 45 50 | 21 27 32 |
8 | 19 25 31 | 19 25 31 | 24 31 38 | 41 45 50 | 58 61 64 | 67 70 74 | 75 77 80 | 74 76 78 | 65 68 71 | 52 57 62 | 38 44 50 | 23 27 31 |
9 | 19 26 32 | 20 26 32 | 26 31 36 | 42 47 52 | 57 61 65 | 67 70 73 | 75 77 79 | 74 76 79 | 64 67 71 | 53 57 61 | 39 44 50 | 20 26 32 |
10 | 19 25 30 | 19 26 33 | 28 33 39 | 45 50 55 | 58 62 66 | 67 70 72 | 74 76 78 | 72 75 77 | 64 67 71 | 51 56 60 | 38 43 49 | 20 26 32 |
11 | 21 27 32 | 18 24 29 | 30 35 41 | 45 50 56 | 57 61 65 | 68 71 74 | 73 76 78 | 70 73 77 | 66 69 72 | 52 56 61 | 34 40 45 | 22 28 34 |
12 | 19 25 30 | 22 26 30 | 30 37 43 | 44 49 54 | 54 58 62 | 69 71 74 | 73 75 77 | 70 74 77 | 65 68 71 | 52 57 62 | 35 40 45 | 22 29 35 |
13 | 14 21 27 | 23 27 32 | 34 40 45 | 45 50 55 | 54 57 60 | 69 71 73 | 74 76 79 | 70 73 76 | 64 67 70 | 51 55 60 | 36 41 46 | 24 29 34 |
14 | 16 21 26 | 25 30 35 | 35 41 46 | 50 55 60 | 54 59 63 | 69 71 73 | 76 78 80 | 70 73 76 | 61 64 67 | 49 53 57 | 37 42 47 | 25 30 35 |
15 | 15 21 27 | 21 27 33 | 35 40 45 | 51 56 61 | 57 61 65 | 69 72 74 | 77 79 80 | 71 73 75 | 59 63 67 | 50 53 56 | 35 39 44 | 23 29 35 |
16 | 16 22 28 | 19 24 29 | 37 42 48 | 47 53 58 | 60 63 66 | 70 72 75 | 77 79 81 | 72 74 76 | 61 64 67 | 49 53 57 | 35 40 45 | 22 28 34 |
17 | 17 22 28 | 22 28 34 | 38 44 50 | 47 52 56 | 61 65 68 | 69 73 76 | 76 79 82 | 71 74 76 | 63 66 68 | 48 52 56 | 33 39 44 | 20 25 30 |
18 | 16 21 26 | 24 30 36 | 38 43 47 | 50 55 60 | 61 65 68 | 71 74 77 | 76 79 82 | 69 73 76 | 62 66 69 | 49 52 55 | 36 41 47 | 22 28 34 |
19 | 15 21 27 | 24 30 35 | 36 40 45 | 50 54 58 | 62 66 70 | 70 73 76 | 75 78 81 | 69 72 76 | 61 65 69 | 48 51 55 | 37 41 45 | 19 24 30 |
20 | 14 19 24 | 27 32 37 | 37 42 46 | 49 52 56 | 61 64 68 | 71 74 77 | 76 79 82 | 69 72 75 | 59 63 67 | 48 52 56 | 34 38 42 | 20 25 29 |
21 | 17 22 27 | 26 31 35 | 36 41 46 | 49 53 56 | 61 64 67 | 72 75 77 | 75 78 81 | 71 74 76 | 57 62 66 | 48 52 56 | 32 37 41 | 17 23 30 |
22 | 20 24 29 | 26 31 36 | 37 42 47 | 51 54 57 | 62 65 67 | 72 75 78 | 74 77 80 | 73 75 77 | 57 61 64 | 46 50 55 | 34 39 44 | 16 23 30 |
23 | 17 21 26 | 27 32 37 | 39 44 48 | 51 54 58 | 62 65 69 | 72 75 78 | 74 77 80 | 73 75 77 | 57 60 64 | 45 51 56 | 34 38 43 | 18 22 27 |
24 | 15 20 26 | 26 32 38 | 39 44 50 | 51 55 59 | 60 64 68 | 71 74 76 | 73 76 79 | 72 74 76 | 56 60 64 | 45 50 55 | 30 35 40 | 16 22 27 |
25 | 17 22 27 | 26 32 39 | 37 43 49 | 51 55 58 | 60 63 66 | 72 75 79 | 74 77 80 | 71 73 75 | 57 61 65 | 47 51 55 | 30 35 40 | 15 21 27 |
26 | 17 23 29 | 26 31 36 | 38 45 51 | 50 53 57 | 59 62 65 | 72 75 78 | 74 77 80 | 72 74 76 | 59 62 65 | 44 49 53 | 31 36 41 | 19 24 29 |
27 | 17 24 30 | 26 29 33 | 40 46 52 | 50 53 56 | 60 64 67 | 73 75 78 | 73 76 79 | 72 74 77 | 58 61 64 | 42 47 51 | 31 36 41 | 21 26 31 |
28 | 16 23 30 | 24 29 33 | 41 45 49 | 51 55 58 | 61 66 70 | 71 74 77 | 75 77 79 | 72 74 77 | 58 61 64 | 43 46 50 | 31 36 41 | 25 29 33 |
29 | 19 24 30 | 18 38 59 | 42 47 51 | 52 56 61 | 64 67 71 | 71 74 77 | 74 76 79 | 72 74 77 | 57 61 64 | 46 50 55 | 31 36 41 | 22 27 33 |
30 | 14 20 27 | 45 49 53 | 53 58 62 | 67 70 72 | 72 74 76 | 74 77 80 | 70 73 76 | 59 63 66 | 48 51 55 | 29 33 37 | 24 31 38 | |
31 | 18 25 33 | 43 47 52 | 64 68 71 | 74 77 80 | 70 73 75 | 42 46 51 | 21 27 33 |