Was the forecast right for Seattle on Mon Oct 12?
Seattle, Washington · daily high temperature in °C · forecasts from each model's archived runs, verified against the SEA observations
14 days out, 4 models put Seattle's Mon Oct 12 high anywhere from 14° to 22°;by the final call, the day before, the field had settled to a median of 16°. The day verified at 16° against the SEA observations — fog.
GEM landed closest, off by 0.1°.
What every model said, at every lead
Daily-high calls for Mon Oct 12 as each model's runs approached it — the last archived run per day. NBM and The Spread's own blend are consensus products and stay out of these ranges and rankings; the Seattle scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-09-27 | — | 14° | — | — | 26° | — | — | 14–26° |
| 14d · 2026-09-28 | 14° | 22° | 19° | — | 19° | — | — | 14–22° |
| 13d · 2026-09-29 | 17° | 20° | 17° | — | 25° | — | — | 17–25° |
| 12d · 2026-09-30 | 18° | 16° | 11° | — | 23° | — | — | 11–23° |
| 11d · 2026-10-01 | 16° | 17° | 14° | — | 18° | — | — | 14–18° |
| 10d · 2026-10-02 | 17° | 16° | 14° | — | 19° | — | — | 14–19° |
| 9d · 2026-10-03 | 15° | 16° | 15° | 13° | 15° | — | — | 13–16° |
| 8d · 2026-10-04 | 15° | 17° | 13° | 15° | 19° | — | — | 13–19° |
| 7d · 2026-10-05 | 16° | 15° | 15° | 15° | 16° | 16° | — | 15–16° |
| 6d · 2026-10-06 | 17° | 14° | 15° | 15° | 18° | 16° | 18° | 14–18° |
| 5d · 2026-10-07 | 16° | 16° | 15° | 15° | 18° | 16° | 18° | 15–18° |
| 4d · 2026-10-08 | 16° | 15° | 15° | 15° | 18° | 16° | 17° | 15–18° |
| 3d · 2026-10-09 | 15° | 15° | 16° | 16° | 17° | 15° | 16° | 15–17° |
| 2d · 2026-10-10 | 16° | 15° | 16° | 16° | 17° | 15° | 17° | 15–17° |
| 1d · 2026-10-11 | 16° | 16° | 15° | 16° | 17° | 16° | 16° | 15–17° |
| actual | 16° |
Read it honestly
This is one date, not a league table. A model can win a day it deserved to lose; rankings only mean something over a window. For that, see which model has been most accurate in Seattle — or every city The Spread scores.
Forecasts are what each model's archived runs said at the time, captured at The Spread's sweep times — never reconstructed after the fact. Truth is the SEA observations. The actual values are the ones in hand when this receipt was settled, usually 2 days after the date; a correction published after that is not carried into it. Archive depth varies by city; receipts exist only for dates the archive watched arrive.