Average daily temperatures in Portland, Oregon, including the 9 year minima and maxima. Due to the possible presence of missing data c.f. the actual day counts involved in the calculations. Keep in mind that the "raw" daily data represent average day temperatures already. The minima and maxima regard thus the coolest and warmest days experienced over the past 9 years rather than the coldest and hotest temperatures reached during that period.
January | February | March | April | May | June | July | August | September | October | November | December | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | -0 5 12 | -7 6 13 | 3 7 13 | 5 9 15 | 9 13 21 | 13 16 21 | 16 19 26 | 18 20 25 | 13 19 26 | 10 15 19 | 3 9 14 | 2 7 11 |
2 | -1 6 12 | -6 5 10 | 5 7 12 | 6 9 14 | 9 13 19 | 11 16 21 | 14 19 24 | 17 20 26 | 14 19 24 | 11 15 18 | 5 9 13 | 3 7 12 |
3 | -1 5 11 | -7 6 10 | 4 7 11 | 5 9 16 | 8 13 18 | 12 17 23 | 13 19 25 | 16 20 24 | 14 20 25 | 11 15 18 | 4 9 17 | 2 6 10 |
4 | -1 4 10 | -4 6 9 | 4 7 10 | 6 9 14 | 7 12 19 | 11 17 23 | 14 19 24 | 17 21 25 | 14 19 26 | 10 14 19 | 5 10 15 | 2 6 15 |
5 | -4 5 10 | -0 6 11 | 3 7 11 | 6 10 16 | 7 13 22 | 12 16 24 | 15 19 24 | 17 21 27 | 14 19 24 | 10 14 19 | 5 10 16 | 1 5 9 |
6 | -6 4 10 | 3 7 10 | 4 7 11 | 6 10 17 | 8 13 20 | 11 16 26 | 17 19 23 | 17 21 26 | 15 18 22 | 10 14 19 | 5 10 18 | 1 5 9 |
7 | -5 6 12 | 2 7 11 | 3 8 13 | 5 10 17 | 7 13 21 | 10 16 25 | 16 19 24 | 17 20 23 | 16 19 24 | 11 15 18 | 5 10 17 | -2 5 8 |
8 | -1 6 12 | 2 6 14 | 3 8 12 | 5 10 18 | 7 13 19 | 10 15 21 | 16 20 27 | 18 20 25 | 14 19 24 | 10 14 18 | 4 9 15 | -4 5 9 |
9 | 2 5 10 | 2 6 9 | 3 8 14 | 6 10 15 | 8 12 18 | 11 16 21 | 17 21 26 | 18 21 27 | 15 19 23 | 10 14 19 | 5 9 13 | -6 4 9 |
10 | 2 5 12 | 1 6 10 | 3 8 13 | 7 10 17 | 8 12 19 | 11 15 20 | 16 21 26 | 17 21 27 | 15 19 24 | 8 13 19 | 5 9 12 | -6 5 14 |
11 | -1 5 9 | 4 6 9 | 3 9 16 | 8 11 18 | 9 14 21 | 11 16 19 | 17 20 27 | 18 20 24 | 14 19 24 | 8 12 16 | 3 9 12 | -5 6 11 |
12 | -3 4 9 | 2 7 9 | 4 9 15 | 7 11 17 | 9 14 23 | 12 16 24 | 17 20 26 | 17 21 24 | 16 20 23 | 11 13 15 | 2 9 15 | -0 6 13 |
13 | -3 5 11 | -2 6 10 | 4 9 13 | 6 10 15 | 9 14 20 | 13 17 25 | 16 20 27 | 17 21 27 | 15 19 25 | 10 13 18 | 5 10 16 | -0 6 13 |
14 | -3 5 12 | -4 6 10 | 4 9 13 | 6 9 12 | 9 15 22 | 12 16 22 | 17 20 28 | 16 22 27 | 15 19 24 | 11 13 18 | 5 10 16 | 0 5 10 |
15 | -2 4 12 | 2 7 11 | 5 9 13 | 6 10 15 | 10 15 23 | 12 16 19 | 16 21 26 | 17 21 28 | 12 18 22 | 9 13 17 | 4 9 15 | -4 5 10 |
16 | -2 4 13 | 1 7 11 | 4 9 13 | 7 11 17 | 8 15 26 | 11 17 21 | 16 21 24 | 17 21 27 | 13 17 22 | 8 13 17 | 2 9 13 | -4 5 11 |
17 | -1 4 12 | 1 7 11 | 3 8 12 | 7 10 17 | 7 15 26 | 13 17 23 | 15 20 26 | 15 21 28 | 13 17 21 | 7 13 21 | 2 9 13 | -2 5 10 |
18 | 1 5 12 | -1 7 12 | 4 9 15 | 7 10 15 | 8 15 23 | 13 17 25 | 14 20 26 | 15 20 25 | 12 17 21 | 9 13 17 | 1 8 13 | -0 4 11 |
19 | -0 5 12 | 0 7 14 | 3 9 14 | 5 10 16 | 11 15 21 | 14 16 22 | 16 20 26 | 16 20 26 | 12 17 22 | 7 13 17 | 2 8 12 | -0 4 8 |
20 | -1 5 10 | 1 7 12 | 7 10 13 | 4 11 17 | 10 14 18 | 14 17 22 | 16 21 25 | 16 20 25 | 14 17 23 | 6 13 19 | 2 8 12 | -5 4 8 |
21 | 0 5 10 | 3 7 13 | 4 9 15 | 6 11 18 | 9 14 19 | 14 18 24 | 17 21 27 | 16 20 24 | 12 17 22 | 7 12 22 | 3 7 12 | -7 4 8 |
22 | -0 5 11 | 4 8 14 | 3 9 14 | 7 11 17 | 8 14 23 | 13 17 20 | 16 22 29 | 17 20 23 | 12 17 23 | 8 13 20 | 1 7 11 | -5 4 7 |
23 | 1 5 10 | 3 7 12 | 4 9 14 | 8 12 20 | 9 14 25 | 14 17 23 | 16 21 29 | 17 20 24 | 11 17 22 | 8 12 16 | -2 7 12 | -6 4 9 |
24 | 1 5 9 | 2 7 12 | 6 9 13 | 8 12 17 | 10 15 22 | 15 18 22 | 17 21 30 | 16 20 25 | 12 17 23 | 7 11 15 | -5 7 13 | -2 5 9 |
25 | 0 5 11 | -1 6 10 | 5 9 12 | 7 12 17 | 11 16 20 | 13 18 26 | 17 21 26 | 17 20 26 | 14 17 20 | 7 10 15 | 0 7 13 | -0 5 11 |
26 | 0 5 13 | -4 5 10 | 6 9 13 | 9 12 19 | 10 16 23 | 14 19 29 | 19 21 26 | 17 20 23 | 13 16 21 | 7 10 13 | 2 7 12 | 1 4 9 |
27 | 0 5 10 | 2 6 10 | 5 8 12 | 8 12 19 | 11 16 24 | 14 19 27 | 18 22 30 | 16 20 24 | 11 17 23 | 7 10 14 | 4 6 9 | 2 5 8 |
28 | 0 5 9 | 2 7 12 | 4 9 14 | 8 12 18 | 10 15 21 | 15 20 26 | 18 22 31 | 17 20 25 | 14 17 22 | 6 11 17 | 1 6 13 | 1 6 12 |
29 | 0 6 12 | 3 7 11 | 4 9 17 | 7 12 20 | 11 15 23 | 16 20 27 | 16 21 32 | 16 20 24 | 10 17 20 | 7 10 16 | -1 7 13 | 0 5 11 |
30 | -6 6 11 | 3 10 15 | 8 13 21 | 12 16 23 | 16 19 26 | 16 21 29 | 15 19 24 | 11 16 20 | 5 10 15 | 3 7 12 | 0 4 10 | |
31 | -6 6 14 | 4 10 16 | 12 17 23 | 17 20 24 | 14 19 23 | 5 10 15 | -1 4 11 |