| Portland stays cold-for-here: high ≤ 55°F · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 2¢ | — | | |
| Portland high ≥ 57°F · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 79¢ | ▲1¢ | | |
| Portland high ≥ 59°F · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 72¢ | — | | |
| Portland high ≥ 60°F · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 75¢ | — | | |
| Portland high ≥ 62°F · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 74¢ | — | | |
| Portland high ≥ 64°F · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 58¢ | — | | |
| Portland runs hot-for-here: 71°F+ · Mon Oct 19 | Portland, OR · West Coast & Southwest | Mon Oct 19 | 2¢ | — | | |
| Portland high ≥ 59°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 76¢ | — | | |
| Portland high ≥ 60°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 81¢ | — | | |
| Portland high ≥ 62°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 78¢ | — | | |
| Portland high ≥ 64°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 95¢ | — | | ★ golden |
| Portland high ≥ 66°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 90¢ | — | | |
| Portland high ≥ 68°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 90¢ | — | | ★ golden |
| Portland runs hot-for-here: 71°F+ · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 92¢ | — | | ★ golden |
| Portland high ≥ 73°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 47¢ | — | | |
| Portland high ≥ 75°F · Tue Oct 20 | Portland, OR · West Coast & Southwest | Tue Oct 20 | 36¢ | — | | |
| Portland high ≥ 61°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 73¢ | · | | |
| Portland high ≥ 62°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 81¢ | — | | |
| Portland high ≥ 64°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 72¢ | — | | |
| Portland high ≥ 66°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 77¢ | — | | |
| Portland high ≥ 68°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 81¢ | — | | |
| Portland high ≥ 69°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 78¢ | — | | |
| Portland runs hot-for-here: 70°F+ · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 94¢ | — | | ★ golden |
| Portland high ≥ 71°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 73¢ | — | | |
| Portland high ≥ 73°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 55¢ | — | | |
| Portland high ≥ 75°F · Wed Oct 21 | Portland, OR · West Coast & Southwest | Wed Oct 21 | 34¢ | — | | |
| Portland high ≥ 60°F · Thu Oct 22 | Portland, OR · West Coast & Southwest | Thu Oct 22 | 60¢ | — | | |
| Portland high ≥ 62°F · Thu Oct 22 | Portland, OR · West Coast & Southwest | Thu Oct 22 | 72¢ | — | | |
| Portland high ≥ 63°F · Thu Oct 22 | Portland, OR · West Coast & Southwest | Thu Oct 22 | 52¢ | — | | |
| Portland high ≥ 64°F · Thu Oct 22 | Portland, OR · West Coast & Southwest | Thu Oct 22 | 56¢ | ▼1¢ | | |
| Portland high ≥ 66°F · Thu Oct 22 | Portland, OR · West Coast & Southwest | Thu Oct 22 | 38¢ | — | | |
| Portland runs hot-for-here: 70°F+ · Thu Oct 22 | Portland, OR · West Coast & Southwest | Thu Oct 22 | 3¢ | — | | |
| Portland high ≥ 59°F · Fri Oct 23 | Portland, OR · West Coast & Southwest | Fri Oct 23 | 79¢ | — | | |
| Portland high ≥ 60°F · Fri Oct 23 | Portland, OR · West Coast & Southwest | Fri Oct 23 | 66¢ | — | | |
| Portland high ≥ 62°F · Fri Oct 23 | Portland, OR · West Coast & Southwest | Fri Oct 23 | 50¢ | — | | |
| Portland runs hot-for-here: 69°F+ · Fri Oct 23 | Portland, OR · West Coast & Southwest | Fri Oct 23 | 3¢ | ▼1¢ | | |
| Portland stays cold-for-here: high ≤ 53°F · Sat Oct 24 | Portland, OR · West Coast & Southwest | Sat Oct 24 | 3¢ | — | | |
| Portland high ≥ 59°F · Sat Oct 24 | Portland, OR · West Coast & Southwest | Sat Oct 24 | 75¢ | — | | |
| Portland high ≥ 60°F · Sat Oct 24 | Portland, OR · West Coast & Southwest | Sat Oct 24 | 56¢ | — | | |
| Portland high ≥ 61°F · Sat Oct 24 | Portland, OR · West Coast & Southwest | Sat Oct 24 | 43¢ | — | | |
| Portland high ≥ 62°F · Sat Oct 24 | Portland, OR · West Coast & Southwest | Sat Oct 24 | 36¢ | — | | |
| Portland runs hot-for-here: 68°F+ · Sat Oct 24 | Portland, OR · West Coast & Southwest | Sat Oct 24 | 6¢ | — | | |
| Portland high ≥ 60°F · Sun Oct 25 | Portland, OR · West Coast & Southwest | Sun Oct 25 | 78¢ | — | | |
| Portland high ≥ 62°F · Sun Oct 25 | Portland, OR · West Coast & Southwest | Sun Oct 25 | 52¢ | — | | |
| Portland runs hot-for-here: 68°F+ · Sun Oct 25 | Portland, OR · West Coast & Southwest | Sun Oct 25 | 16¢ | — | | |
| Portland high ≥ 60°F · Mon Oct 26 | Portland, OR · West Coast & Southwest | Mon Oct 26 | 39¢ | — | | |
| Portland high ≥ 61°F · Mon Oct 26 | Portland, OR · West Coast & Southwest | Mon Oct 26 | 59¢ | — | | |
| Portland high ≥ 62°F · Mon Oct 26 | Portland, OR · West Coast & Southwest | Mon Oct 26 | 55¢ | — | | |
| Portland runs hot-for-here: 67°F+ · Mon Oct 26 | Portland, OR · West Coast & Southwest | Mon Oct 26 | 20¢ | — | | |
| Portland high ≥ 62°F · Tue Oct 27 | Portland, OR · West Coast & Southwest | Tue Oct 27 | 52¢ | — | | |
| Portland runs hot-for-here: 67°F+ · Tue Oct 27 | Portland, OR · West Coast & Southwest | Tue Oct 27 | 19¢ | — | | |