| Seattle stays cold-for-here: high ≤ 52°F · Sun Oct 18 | Seattle, WA · West Coast & Southwest | Sun Oct 18 | 2¢ | — | | |
| Seattle high ≥ 59°F · Sun Oct 18 | Seattle, WA · West Coast & Southwest | Sun Oct 18 | 67¢ | ▲1¢ | | |
| Seattle high ≥ 60°F · Sun Oct 18 | Seattle, WA · West Coast & Southwest | Sun Oct 18 | 63¢ | — | | |
| Seattle high ≥ 61°F · Sun Oct 18 | Seattle, WA · West Coast & Southwest | Sun Oct 18 | 63¢ | — | | |
| Seattle high ≥ 62°F · Sun Oct 18 | Seattle, WA · West Coast & Southwest | Sun Oct 18 | 52¢ | — | | |
| Seattle runs hot-for-here: 66°F+ · Sun Oct 18 | Seattle, WA · West Coast & Southwest | Sun Oct 18 | 3¢ | — | | |
| Seattle stays cold-for-here: high ≤ 52°F · Mon Oct 19 | Seattle, WA · West Coast & Southwest | Mon Oct 19 | 2¢ | — | | |
| Seattle high ≥ 57°F · Mon Oct 19 | Seattle, WA · West Coast & Southwest | Mon Oct 19 | 77¢ | ▲1¢ | | |
| Seattle high ≥ 58°F · Mon Oct 19 | Seattle, WA · West Coast & Southwest | Mon Oct 19 | 66¢ | — | | |
| Seattle high ≥ 59°F · Mon Oct 19 | Seattle, WA · West Coast & Southwest | Mon Oct 19 | 80¢ | — | | |
| Seattle high ≥ 60°F · Mon Oct 19 | Seattle, WA · West Coast & Southwest | Mon Oct 19 | 71¢ | — | | |
| Seattle runs hot-for-here: 66°F+ · Mon Oct 19 | Seattle, WA · West Coast & Southwest | Mon Oct 19 | 2¢ | ▼1¢ | | |
| Seattle stays cold-for-here: high ≤ 52°F · Tue Oct 20 | Seattle, WA · West Coast & Southwest | Tue Oct 20 | 2¢ | — | | |
| Seattle high ≥ 57°F · Tue Oct 20 | Seattle, WA · West Coast & Southwest | Tue Oct 20 | 78¢ | — | | |
| Seattle high ≥ 59°F · Tue Oct 20 | Seattle, WA · West Coast & Southwest | Tue Oct 20 | 86¢ | — | | |
| Seattle high ≥ 60°F · Tue Oct 20 | Seattle, WA · West Coast & Southwest | Tue Oct 20 | 83¢ | — | | |
| Seattle runs hot-for-here: 66°F+ · Tue Oct 20 | Seattle, WA · West Coast & Southwest | Tue Oct 20 | 3¢ | — | | |
| Seattle high ≥ 58°F · Wed Oct 21 | Seattle, WA · West Coast & Southwest | Wed Oct 21 | 73¢ | — | | |
| Seattle high ≥ 59°F · Wed Oct 21 | Seattle, WA · West Coast & Southwest | Wed Oct 21 | 70¢ | — | | |
| Seattle high ≥ 60°F · Wed Oct 21 | Seattle, WA · West Coast & Southwest | Wed Oct 21 | 83¢ | — | | |
| Seattle high ≥ 62°F · Wed Oct 21 | Seattle, WA · West Coast & Southwest | Wed Oct 21 | 66¢ | — | | |
| Seattle high ≥ 64°F · Wed Oct 21 | Seattle, WA · West Coast & Southwest | Wed Oct 21 | 65¢ | — | | |
| Seattle runs hot-for-here: 65°F+ · Wed Oct 21 | Seattle, WA · West Coast & Southwest | Wed Oct 21 | 29¢ | — | | |
| Seattle high ≥ 57°F · Thu Oct 22 | Seattle, WA · West Coast & Southwest | Thu Oct 22 | 70¢ | — | | |
| Seattle high ≥ 58°F · Thu Oct 22 | Seattle, WA · West Coast & Southwest | Thu Oct 22 | 60¢ | — | | |
| Seattle high ≥ 59°F · Thu Oct 22 | Seattle, WA · West Coast & Southwest | Thu Oct 22 | 63¢ | — | | |
| Seattle runs hot-for-here: 64°F+ · Thu Oct 22 | Seattle, WA · West Coast & Southwest | Thu Oct 22 | 11¢ | — | | |
| Seattle stays cold-for-here: high ≤ 51°F · Fri Oct 23 | Seattle, WA · West Coast & Southwest | Fri Oct 23 | 2¢ | — | | |
| Seattle high ≥ 56°F · Fri Oct 23 | Seattle, WA · West Coast & Southwest | Fri Oct 23 | 70¢ | — | | |
| Seattle high ≥ 57°F · Fri Oct 23 | Seattle, WA · West Coast & Southwest | Fri Oct 23 | 70¢ | — | | |
| Seattle high ≥ 59°F · Fri Oct 23 | Seattle, WA · West Coast & Southwest | Fri Oct 23 | 44¢ | — | | |
| Seattle runs hot-for-here: 64°F+ · Fri Oct 23 | Seattle, WA · West Coast & Southwest | Fri Oct 23 | 4¢ | — | | |
| Seattle high ≥ 55°F · Sat Oct 24 | Seattle, WA · West Coast & Southwest | Sat Oct 24 | 68¢ | — | | |
| Seattle high ≥ 56°F · Sat Oct 24 | Seattle, WA · West Coast & Southwest | Sat Oct 24 | 64¢ | — | | |
| Seattle high ≥ 57°F · Sat Oct 24 | Seattle, WA · West Coast & Southwest | Sat Oct 24 | 35¢ | — | | |
| Seattle runs hot-for-here: 63°F+ · Sat Oct 24 | Seattle, WA · West Coast & Southwest | Sat Oct 24 | 4¢ | — | | |
| Seattle high ≥ 57°F · Sun Oct 25 | Seattle, WA · West Coast & Southwest | Sun Oct 25 | 50¢ | — | | |
| Seattle runs hot-for-here: 63°F+ · Sun Oct 25 | Seattle, WA · West Coast & Southwest | Sun Oct 25 | 11¢ | — | | |
| Seattle high ≥ 56°F · Mon Oct 26 | Seattle, WA · West Coast & Southwest | Mon Oct 26 | 55¢ | — | | |
| Seattle runs hot-for-here: 63°F+ · Mon Oct 26 | Seattle, WA · West Coast & Southwest | Mon Oct 26 | 10¢ | — | | |