| 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) | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 |
| Sep 1 | 68.9 | 69.1 | 69.6 | 24/24 | 69.4 | 69.5 | 69.7 | 24/24 | 70.0 | 70.2 | 70.6 | 24/24 | 69.9 | 70.1 | 70.4 | 24/24 | 69.7 | 70.1 | 70.5 | 24/24 | 69.8 | 70.1 | 70.4 | 24/24 | 69.5 | 69.8 | 70.0 | 24/24 | 69.7 | 69.9 | 70.2 | 24/24 | 69.3 | 69.7 | 70.2 | 24/24 | 69.3 | 70.1 | 70.9 | 24/24 |
| Sep 2 | 68.5 | 68.8 | 69.3 | 24/24 | 68.8 | 69.1 | 69.4 | 24/24 | 70.2 | 70.4 | 70.6 | 24/24 | 70.2 | 70.2 | 70.3 | 24/24 | 69.9 | 70.1 | 70.3 | 24/24 | 70.0 | 70.2 | 70.4 | 24/24 | 69.5 | 69.7 | 70.0 | 24/24 | 69.6 | 69.8 | 70.0 | 24/24 | 69.3 | 69.6 | 70.0 | 24/24 | 69.5 | 70.1 | 70.8 | 24/24 |
| Sep 3 | 68.5 | 68.5 | 68.6 | 24/24 | 68.5 | 68.7 | 68.8 | 24/24 | 70.2 | 70.3 | 70.3 | 24/24 | 70.1 | 70.2 | 70.3 | 24/24 | 69.6 | 69.8 | 70.1 | 24/24 | 69.6 | 69.8 | 70.0 | 24/24 | 69.2 | 69.3 | 69.4 | 24/24 | 69.2 | 69.4 | 69.6 | 24/24 | 68.8 | 69.2 | 69.8 | 24/24 | 69.3 | 69.8 | 70.2 | 24/24 |
| Sep 4 | 68.3 | 68.4 | 68.6 | 24/24 | 68.4 | 68.6 | 68.8 | 24/24 | 69.9 | 70.1 | 70.2 | 24/24 | 69.8 | 70.0 | 70.1 | 24/24 | 69.2 | 69.4 | 69.6 | 24/24 | 69.1 | 69.4 | 69.6 | 24/24 | 69.0 | 69.1 | 69.3 | 24/24 | 69.0 | 69.2 | 69.5 | 24/24 | 68.5 | 69.0 | 69.5 | 24/24 | 68.9 | 69.4 | 69.7 | 24/24 |
| Sep 5 | 68.0 | 68.1 | 68.3 | 23/24 | 68.2 | 68.5 | 68.8 | 24/24 | 69.7 | 69.9 | 70.6 | 24/24 | 69.7 | 69.8 | 69.9 | 24/24 | 68.9 | 69.1 | 69.2 | 24/24 | 68.9 | 69.1 | 69.3 | 24/24 | 68.7 | 68.9 | 69.0 | 24/24 | 68.7 | 69.0 | 69.3 | 24/24 | 68.0 | 68.8 | 69.8 | 24/24 | 68.7 | 69.2 | 69.6 | 24/24 |
| Sep 6 | 67.9 | 68.0 | 68.2 | 7/24 | 68.2 | 68.3 | 68.5 | 24/24 | 69.6 | 69.8 | 70.3 | 24/24 | 69.6 | 69.7 | 69.9 | 24/24 | 69.0 | 69.2 | 69.6 | 24/24 | 68.9 | 69.1 | 69.3 | 24/24 | 68.8 | 68.9 | 69.1 | 24/24 | 68.8 | 69.1 | 69.4 | 24/24 | 68.0 | 68.9 | 69.8 | 24/24 | 68.6 | 69.2 | 69.7 | 24/24 |
| Sep 7 | 67.9 | 68.1 | 68.6 | 10/24 | 68.1 | 68.3 | 68.5 | 24/24 | 69.5 | 69.6 | 69.6 | 12/12 | 69.4 | 69.5 | 69.6 | 14/14 | 69.5 | 69.6 | 69.8 | 24/24 | 69.4 | 69.6 | 69.8 | 24/24 | 69.0 | 69.1 | 69.1 | 24/24 | 68.9 | 69.2 | 69.6 | 24/24 | 68.3 | 69.1 | 70.1 | 24/24 | 69.0 | 69.5 | 69.9 | 24/24 |
| Sep 8 | 67.9 | 68.1 | 68.6 | 19/24 | 68.1 | 68.3 | 68.6 | 24/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 69.7 | 69.8 | 69.8 | 8/8 | 69.6 | 69.6 | 69.7 | 9/9 | 69.1 | 69.2 | 69.2 | 24/24 | 32.0 | 67.7 | 69.5 | 23/24 | 68.1 | 69.1 | 69.9 | 24/24 | 69.2 | 69.5 | 69.8 | 24/24 |
| Sep 9 | 67.5 | 67.7 | 68.1 | 2/24 | 67.6 | 67.8 | 68.3 | 4/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 68.0 | 68.6 | 69.1 | 23/24 | 68.7 | 68.9 | 69.1 | 9/9 | 67.6 | 68.3 | 68.9 | 19/24 | 67.6 | 68.5 | 69.5 | 20/24 |
| Sep 10 | 67.2 | 67.3 | 67.5 | 0/24 | 67.3 | 67.4 | 67.7 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 67.6 | 67.7 | 67.9 | 0/24 | --- | --- | --- | 0/0 | 66.8 | 67.5 | 68.5 | 3/24 | 67.2 | 67.4 | 67.7 | 0/24 |
| Sep 11 | 66.8 | 67.0 | 67.2 | 0/24 | 67.0 | 67.2 | 67.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 67.6 | 67.6 | 67.7 | 0/24 | --- | --- | --- | 0/0 | 66.7 | 67.5 | 68.8 | 6/24 | 66.6 | 67.2 | 67.7 | 0/24 |
| Sep 12 | 66.5 | 66.6 | 66.8 | 0/24 | 66.8 | 66.9 | 67.1 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 67.5 | 67.6 | 67.8 | 0/24 | --- | --- | --- | 0/0 | 66.9 | 67.5 | 68.4 | 7/24 | 67.2 | 67.7 | 68.2 | 5/24 |
| Sep 13 | 66.6 | 66.7 | 67.0 | 0/24 | 66.7 | 66.9 | 67.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 67.5 | 67.5 | 67.6 | 0/24 | --- | --- | --- | 0/0 | 66.7 | 67.4 | 68.6 | 5/24 | 67.5 | 67.8 | 68.0 | 1/9 |
| Sep 14 | 66.6 | 66.7 | 66.8 | 0/24 | 66.5 | 66.7 | 67.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 67.0 | 67.2 | 67.5 | 0/24 | --- | --- | --- | 0/0 | 66.7 | 67.2 | 68.0 | 1/24 | --- | --- | --- | 0/0 |
| Sep 15 | 66.3 | 66.4 | 66.6 | 0/24 | 66.1 | 66.3 | 66.6 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 66.4 | 66.7 | 67.0 | 0/24 | --- | --- | --- | 0/0 | 66.1 | 66.5 | 67.1 | 0/24 | --- | --- | --- | 0/0 |
| Sep 16 | 66.3 | 66.3 | 66.5 | 0/24 | 66.1 | 66.2 | 66.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 66.0 | 66.2 | 66.4 | 0/24 | --- | --- | --- | 0/0 | 65.8 | 66.0 | 66.2 | 0/24 | --- | --- | --- | 0/0 |
| Sep 17 | 66.1 | 66.2 | 66.2 | 0/24 | 66.0 | 66.1 | 66.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.7 | 65.8 | 66.0 | 0/24 | --- | --- | --- | 0/0 | 65.4 | 65.8 | 66.4 | 0/24 | --- | --- | --- | 0/0 |
| Sep 18 | 65.9 | 66.0 | 66.2 | 0/24 | 65.8 | 66.0 | 66.3 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.5 | 65.6 | 65.6 | 0/24 | --- | --- | --- | 0/0 | 65.0 | 65.5 | 66.4 | 0/24 | --- | --- | --- | 0/0 |
| Sep 19 | 65.8 | 65.9 | 66.1 | 0/24 | 65.7 | 65.9 | 66.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.5 | 65.6 | 65.7 | 0/24 | --- | --- | --- | 0/0 | 64.7 | 65.5 | 66.3 | 0/24 | --- | --- | --- | 0/0 |
| Sep 20 | 65.6 | 65.8 | 66.0 | 0/24 | 65.6 | 65.8 | 66.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.5 | 65.6 | 65.7 | 0/24 | --- | --- | --- | 0/0 | 64.8 | 65.5 | 66.6 | 0/24 | --- | --- | --- | 0/0 |
| Sep 21 | 65.5 | 65.6 | 65.7 | 0/24 | 65.4 | 65.6 | 65.8 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 65.1 | 65.2 | 65.4 | 0/24 | --- | --- | --- | 0/0 | 64.6 | 65.1 | 65.7 | 0/24 | --- | --- | --- | 0/0 |
| Sep 22 | 65.4 | 65.5 | 65.8 | 0/24 | 65.1 | 65.3 | 65.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.7 | 64.8 | 65.1 | 0/24 | --- | --- | --- | 0/0 | 64.1 | 64.7 | 65.3 | 0/24 | --- | --- | --- | 0/0 |
| Sep 23 | 65.2 | 65.4 | 65.7 | 0/24 | 65.1 | 65.2 | 65.4 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.7 | 64.7 | 64.8 | 0/24 | --- | --- | --- | 0/0 | 64.0 | 64.6 | 65.5 | 0/24 | --- | --- | --- | 0/0 |
| Sep 24 | 64.9 | 65.0 | 65.3 | 0/24 | 64.7 | 65.0 | 65.1 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.4 | 64.6 | 64.8 | 0/24 | --- | --- | --- | 0/0 | 63.8 | 64.4 | 65.3 | 0/24 | --- | --- | --- | 0/0 |
| Sep 25 | 64.7 | 64.8 | 64.9 | 0/24 | 64.5 | 64.8 | 65.0 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.1 | 64.2 | 64.4 | 0/24 | --- | --- | --- | 0/0 | 63.3 | 64.1 | 65.4 | 0/24 | --- | --- | --- | 0/0 |
| Sep 26 | 64.6 | 64.7 | 64.8 | 0/20 | 64.5 | 64.7 | 64.8 | 0/20 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.1 | 64.2 | 64.3 | 0/24 | --- | --- | --- | 0/0 | 62.9 | 64.1 | 65.6 | 0/20 | --- | --- | --- | 0/0 |
| Sep 27 | 64.1 | 64.3 | 64.6 | 0/24 | 64.3 | 64.5 | 64.7 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.0 | 64.2 | 64.4 | 0/24 | --- | --- | --- | 0/0 | 63.6 | 64.0 | 64.5 | 0/24 | --- | --- | --- | 0/0 |
| Sep 28 | 64.0 | 64.1 | 64.5 | 0/24 | 64.1 | 64.3 | 64.5 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.1 | 64.3 | 64.4 | 0/24 | --- | --- | --- | 0/0 | 63.4 | 64.1 | 65.4 | 0/24 | --- | --- | --- | 0/0 |
| Sep 29 | 63.8 | 64.0 | 64.3 | 0/24 | 64.0 | 64.1 | 64.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.1 | 64.2 | 64.3 | 0/24 | --- | --- | --- | 0/0 | 63.4 | 64.0 | 64.4 | 0/24 | --- | --- | --- | 0/0 |
| Sep 30 | 64.0 | 64.1 | 64.1 | 0/24 | 64.1 | 64.1 | 64.2 | 0/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 64.2 | 64.3 | 64.3 | 0/24 | --- | --- | --- | 0/0 | 64.1 | 64.2 | 64.3 | 0/24 | --- | --- | --- | 0/0 |
| >68 | 4 | 7 | 9 | 157/ 716 |
8 | 8 | 9 | 196/ 716 |
7 | 7 | 7 | 156/ 156 |
7 | 7 | 7 | 158/ 158 |
8 | 8 | 8 | 176/ 176 |
8 | 8 | 8 | 177/ 177 |
8 | 9 | 9 | 215/ 720 |
8 | 8 | 9 | 200/ 201 |
8 | 9 | 14 | 233/ 716 |
8 | 9 | 11 | 218/ 297 |
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 |