| McNary Dam forebay on Columbia R. (MCNA) | McNary Dam tailwater on Columbia R. (MCPW) | John Day Dam forebay (JDY) | John Day Dam tailwater (JHAW) | The Dalles Dam forebay on Columbia R. (TDA) | The Dalles tailwater Downstream (TDDO) | Bonneville Dam forebay (BON) | Cascade Island (CCIW) | Warrendale (WRNO) | Camas / Washougal (CWMW) | Pasco - Columbia Rivers (PAQW) | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 | Min | Avg | Max | >68.05 |
| Sep 1 | 69.8 | 70.0 | 70.2 | 24/24 | 69.9 | 70.1 | 70.4 | 24/24 | 71.0 | 71.2 | 71.3 | 24/24 | 71.0 | 71.2 | 71.4 | 24/24 | 70.5 | 70.6 | 70.8 | 24/24 | 70.6 | 70.7 | 70.9 | 24/24 | 70.0 | 70.2 | 70.6 | 24/24 | 69.9 | 70.3 | 70.6 | 24/24 | 69.8 | 70.2 | 70.6 | 24/24 | 70.3 | 70.6 | 71.2 | 24/24 | 67.7 | 68.1 | 68.4 | 12/24 |
| Sep 2 | 69.2 | 69.5 | 69.8 | 24/24 | 69.3 | 69.7 | 69.9 | 24/24 | 70.8 | 70.9 | 71.0 | 24/24 | 70.8 | 70.9 | 71.0 | 24/24 | 70.2 | 70.4 | 70.6 | 24/24 | 70.2 | 70.5 | 70.6 | 24/24 | 69.9 | 70.0 | 70.1 | 24/24 | 69.7 | 69.9 | 70.0 | 24/24 | 69.4 | 69.8 | 70.0 | 24/24 | 69.3 | 69.6 | 70.3 | 24/24 | 67.2 | 67.6 | 68.0 | 0/24 |
| Sep 3 | 69.0 | 69.1 | 69.2 | 24/24 | 69.1 | 69.3 | 69.5 | 24/24 | 70.5 | 70.7 | 70.8 | 24/24 | 70.6 | 70.7 | 70.8 | 24/24 | 69.8 | 70.0 | 70.2 | 24/24 | 69.9 | 70.1 | 70.2 | 24/24 | 69.5 | 69.7 | 69.9 | 24/24 | 69.4 | 69.7 | 69.8 | 24/24 | 69.1 | 69.6 | 70.0 | 24/24 | 69.0 | 69.5 | 69.9 | 24/24 | 66.9 | 67.3 | 67.6 | 0/24 |
| Sep 4 | 68.5 | 68.7 | 69.0 | 24/24 | 68.6 | 68.9 | 69.2 | 24/24 | 70.4 | 70.5 | 70.6 | 24/24 | 70.3 | 70.5 | 70.6 | 24/24 | 69.3 | 69.6 | 69.8 | 24/24 | 69.4 | 69.7 | 69.9 | 24/24 | 69.0 | 69.2 | 69.4 | 24/24 | 68.9 | 69.1 | 69.4 | 24/24 | 68.5 | 69.0 | 69.3 | 24/24 | 68.8 | 69.2 | 69.9 | 24/24 | 66.6 | 67.0 | 67.3 | 0/24 |
| Sep 5 | 68.3 | 68.4 | 68.5 | 24/24 | 68.4 | 68.6 | 68.8 | 24/24 | 70.0 | 70.2 | 70.3 | 24/24 | 70.0 | 70.2 | 70.3 | 24/24 | 69.1 | 69.3 | 69.5 | 24/24 | 69.1 | 69.4 | 69.7 | 24/24 | 68.7 | 68.8 | 69.0 | 24/24 | 68.6 | 68.8 | 69.0 | 24/24 | 68.5 | 68.8 | 69.5 | 24/24 | 68.3 | 68.9 | 69.3 | 24/24 | 66.4 | 66.7 | 67.1 | 0/24 |
| Sep 6 | 68.2 | 68.3 | 68.3 | 11/11 | 68.0 | 68.2 | 68.4 | 19/22 | 69.8 | 69.9 | 70.0 | 24/24 | 69.8 | 69.9 | 70.0 | 24/24 | 68.9 | 69.1 | 69.3 | 24/24 | 69.0 | 69.1 | 69.3 | 24/24 | 68.3 | 68.5 | 68.7 | 24/24 | 68.3 | 68.5 | 68.7 | 24/24 | 68.1 | 68.5 | 68.7 | 24/24 | 68.5 | 68.7 | 69.2 | 24/24 | 66.1 | 66.3 | 66.6 | 0/15 |
| Sep 7 | --- | --- | --- | 0/0 | 67.7 | 67.9 | 68.1 | 4/20 | 69.5 | 69.6 | 69.8 | 24/24 | 69.5 | 69.6 | 69.8 | 24/24 | 69.1 | 69.2 | 69.3 | 24/24 | 69.0 | 69.2 | 69.4 | 24/24 | 68.1 | 68.1 | 68.3 | 24/24 | 68.0 | 68.2 | 68.4 | 23/24 | 67.7 | 68.1 | 68.6 | 13/24 | 68.1 | 68.4 | 68.8 | 24/24 | --- | --- | --- | 0/0 |
| Sep 8 | --- | --- | --- | 0/0 | 67.4 | 67.7 | 67.9 | 0/24 | 69.2 | 69.3 | 69.5 | 24/24 | 69.1 | 69.3 | 69.4 | 24/24 | 68.7 | 68.9 | 69.1 | 24/24 | 68.7 | 68.9 | 69.1 | 24/24 | 68.0 | 68.1 | 68.2 | 22/24 | 67.9 | 68.1 | 68.4 | 15/24 | 67.3 | 68.0 | 68.8 | 10/24 | 68.1 | 68.5 | 68.7 | 24/24 | --- | --- | --- | 0/0 |
| Sep 9 | --- | --- | --- | 0/0 | 67.2 | 67.4 | 67.8 | 0/24 | 68.9 | 69.1 | 69.5 | 24/24 | 69.0 | 69.1 | 69.3 | 24/24 | 68.4 | 68.5 | 68.7 | 24/24 | 68.5 | 68.7 | 69.2 | 24/24 | 67.8 | 68.0 | 68.1 | 10/24 | 67.8 | 68.1 | 68.4 | 11/24 | 66.8 | 68.0 | 69.9 | 8/24 | 67.8 | 68.2 | 68.5 | 16/24 | --- | --- | --- | 0/0 |
| Sep 10 | --- | --- | --- | 0/0 | 67.2 | 67.4 | 67.6 | 0/24 | 68.7 | 68.9 | 69.2 | 24/24 | 68.8 | 68.9 | 69.0 | 24/24 | 68.4 | 68.5 | 68.8 | 24/24 | 68.3 | 68.6 | 68.8 | 24/24 | 67.8 | 67.9 | 68.1 | 1/24 | 67.6 | 67.9 | 68.3 | 7/24 | 66.6 | 67.8 | 68.8 | 9/24 | 67.5 | 68.0 | 68.4 | 9/24 | --- | --- | --- | 0/0 |
| Sep 11 | --- | --- | --- | 0/0 | 66.7 | 67.1 | 67.3 | 0/24 | 68.5 | 68.6 | 68.7 | 24/24 | 68.5 | 68.6 | 68.7 | 24/24 | 68.4 | 68.5 | 68.7 | 24/24 | 68.4 | 68.6 | 68.7 | 24/24 | 67.9 | 68.0 | 68.2 | 8/24 | 67.7 | 67.9 | 68.3 | 7/24 | 67.6 | 67.9 | 68.7 | 7/24 | 67.6 | 68.0 | 68.3 | 11/24 | --- | --- | --- | 0/0 |
| Sep 12 | --- | --- | --- | 0/0 | 66.3 | 66.5 | 66.8 | 0/24 | 68.2 | 68.4 | 68.5 | 24/24 | 68.3 | 68.4 | 68.5 | 24/24 | 67.6 | 67.9 | 68.3 | 7/24 | 67.8 | 68.2 | 68.4 | 21/24 | 67.6 | 67.7 | 67.8 | 0/24 | 67.4 | 67.6 | 67.9 | 0/24 | 66.2 | 67.5 | 68.5 | 4/24 | 67.6 | 67.8 | 68.0 | 0/24 | --- | --- | --- | 0/0 |
| Sep 13 | --- | --- | --- | 0/0 | 66.2 | 66.5 | 66.8 | 0/24 | 68.1 | 68.4 | 68.8 | 24/24 | 68.1 | 68.2 | 68.4 | 24/24 | 67.5 | 67.6 | 67.8 | 0/24 | 67.4 | 67.7 | 67.9 | 0/24 | 67.0 | 67.3 | 67.6 | 0/24 | 67.0 | 67.3 | 67.5 | 0/24 | 66.4 | 67.2 | 68.5 | 2/24 | 67.1 | 67.5 | 67.9 | 0/24 | --- | --- | --- | 0/0 |
| Sep 14 | --- | --- | --- | 0/0 | 66.3 | 66.5 | 66.7 | 0/24 | 67.9 | 68.1 | 68.7 | 18/24 | 67.9 | 68.0 | 68.2 | 10/24 | 67.4 | 67.5 | 67.8 | 0/24 | 67.5 | 67.7 | 67.9 | 0/24 | 67.0 | 67.1 | 67.1 | 0/11 | 66.7 | 66.8 | 66.9 | 0/9 | 66.0 | 66.8 | 67.6 | 0/24 | 66.5 | 66.9 | 67.2 | 0/14 | --- | --- | --- | 0/0 |
| Sep 15 | --- | --- | --- | 0/0 | 66.1 | 66.2 | 66.5 | 0/24 | 67.7 | 67.8 | 67.9 | 0/11 | 67.7 | 67.8 | 68.0 | 0/24 | 67.2 | 67.3 | 67.4 | 0/14 | 67.2 | 67.4 | 67.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 66.4 | 67.1 | 67.8 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 16 | --- | --- | --- | 0/0 | 65.9 | 66.1 | 66.3 | 0/24 | --- | --- | --- | 0/0 | 67.6 | 67.8 | 67.9 | 0/24 | --- | --- | --- | 0/0 | 67.0 | 67.2 | 67.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 66.8 | 67.2 | 67.8 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 17 | --- | --- | --- | 0/0 | 65.1 | 65.5 | 65.9 | 0/24 | --- | --- | --- | 0/0 | 67.3 | 67.4 | 67.6 | 0/24 | --- | --- | --- | 0/0 | 67.2 | 67.3 | 67.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 66.6 | 66.8 | 67.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 18 | --- | --- | --- | 0/0 | 65.1 | 65.3 | 65.6 | 0/24 | --- | --- | --- | 0/0 | 67.2 | 67.3 | 67.4 | 0/24 | --- | --- | --- | 0/0 | 66.9 | 67.1 | 67.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 66.4 | 66.7 | 67.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 19 | --- | --- | --- | 0/0 | 65.2 | 65.3 | 65.4 | 0/24 | --- | --- | --- | 0/0 | 67.0 | 67.1 | 67.2 | 0/24 | --- | --- | --- | 0/0 | 66.2 | 66.5 | 66.8 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.8 | 66.3 | 66.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 20 | --- | --- | --- | 0/0 | 65.3 | 65.5 | 65.8 | 0/24 | --- | --- | --- | 0/0 | 66.8 | 66.9 | 67.1 | 0/24 | --- | --- | --- | 0/0 | 66.0 | 66.2 | 66.3 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.8 | 66.4 | 66.8 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 21 | --- | --- | --- | 0/0 | 65.1 | 65.3 | 65.5 | 0/24 | --- | --- | --- | 0/0 | 66.7 | 66.8 | 67.0 | 0/24 | --- | --- | --- | 0/0 | 66.0 | 66.3 | 66.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.8 | 66.4 | 67.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 22 | --- | --- | --- | 0/0 | 64.8 | 64.9 | 65.0 | 0/24 | --- | --- | --- | 0/0 | 66.3 | 66.5 | 66.7 | 0/24 | --- | --- | --- | 0/0 | 65.9 | 66.2 | 66.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.6 | 66.0 | 66.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 23 | --- | --- | --- | 0/0 | 64.3 | 64.5 | 64.8 | 0/24 | --- | --- | --- | 0/0 | 65.9 | 66.0 | 66.2 | 0/24 | --- | --- | --- | 0/0 | 65.2 | 65.6 | 65.9 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.7 | 65.3 | 65.7 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 24 | --- | --- | --- | 0/0 | 64.1 | 64.3 | 64.6 | 0/24 | --- | --- | --- | 0/0 | 65.6 | 65.8 | 66.0 | 0/24 | --- | --- | --- | 0/0 | 64.9 | 65.1 | 65.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.0 | 64.8 | 65.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 25 | --- | --- | --- | 0/0 | 64.0 | 64.1 | 64.3 | 0/24 | --- | --- | --- | 0/0 | 65.5 | 65.6 | 65.7 | 0/24 | --- | --- | --- | 0/0 | 64.7 | 65.0 | 65.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 63.9 | 64.8 | 66.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 26 | --- | --- | --- | 0/0 | 63.8 | 63.9 | 64.1 | 0/24 | --- | --- | --- | 0/0 | 65.4 | 65.6 | 66.8 | 0/24 | --- | --- | --- | 0/0 | 65.1 | 65.3 | 65.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.1 | 65.0 | 65.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 27 | --- | --- | --- | 0/0 | 63.7 | 63.8 | 63.9 | 0/24 | --- | --- | --- | 0/0 | 65.0 | 65.3 | 65.5 | 0/24 | --- | --- | --- | 0/0 | 65.4 | 65.5 | 65.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.0 | 65.4 | 66.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 28 | --- | --- | --- | 0/0 | 63.7 | 64.0 | 64.2 | 0/24 | --- | --- | --- | 0/0 | 64.8 | 64.9 | 65.0 | 0/24 | --- | --- | --- | 0/0 | 65.3 | 65.4 | 65.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.1 | 65.4 | 66.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 29 | --- | --- | --- | 0/0 | 64.1 | 64.4 | 64.7 | 0/24 | --- | --- | --- | 0/0 | 64.6 | 64.8 | 64.9 | 0/24 | --- | --- | --- | 0/0 | 64.9 | 65.2 | 65.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.0 | 65.3 | 66.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| Sep 30 | --- | --- | --- | 0/0 | 64.3 | 64.5 | 64.8 | 0/24 | --- | --- | --- | 0/0 | 64.4 | 64.5 | 64.7 | 0/24 | --- | --- | --- | 0/0 | 64.4 | 64.7 | 64.9 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.4 | 64.9 | 65.7 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 |
| >68.05 | 6 | 6 | 6 | 131/ 131 |
5 | 6 | 7 | 143/ 714 |
13 | 14 | 14 | 330/ 347 |
13 | 13 | 14 | 322/ 720 |
11 | 11 | 12 | 271/ 350 |
11 | 12 | 12 | 285/ 720 |
7 | 8 | 11 | 209/ 323 |
6 | 9 | 11 | 207/ 321 |
6 | 7 | 13 | 197/ 720 |
8 | 9 | 11 | 228/ 326 |
0 | 1 | 1 | 12/ 135 |
Temperature in Degrees Fahrenheit
| <32 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | 66 | 68 | 70 | 72 | 74 | 76 | 78 | 80 | 82 | 84 | 86 | >86 |