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