Was the forecast right for Oklahoma City on Mon Sep 21?
Oklahoma City, Oklahoma · daily high temperature in °C · forecasts from each model's archived runs, verified against the OKC observations
14 days out, 4 models put Oklahoma City's Mon Sep 21 high anywhere from 24° to 35°;by the call made on the day itself the field had settled to a median of 28°. The day verified at 29° against the OKC observations — drizzle.
GFS landed closest, off by 0.6°. AIFS ran 3° cool.
What every model said, at every lead
Daily-high calls for Mon Sep 21 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 Oklahoma City scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-09-06 | — | 26° | — | — | 28° | — | — | 26–28° |
| 14d · 2026-09-07 | 24° | 30° | 30° | — | 35° | — | — | 24–35° |
| 13d · 2026-09-08 | 27° | 21° | 21° | — | 32° | — | — | 21–32° |
| 12d · 2026-09-09 | 30° | 24° | 26° | — | 34° | — | — | 24–34° |
| 11d · 2026-09-10 | 22° | 24° | 22° | — | 27° | — | — | 22–27° |
| 10d · 2026-09-11 | 26° | 19° | 25° | — | 25° | — | — | 19–26° |
| 9d · 2026-09-12 | 35° | 26° | 23° | 29° | 31° | — | — | 23–35° |
| 8d · 2026-09-13 | 29° | 28° | 35° | 30° | 33° | — | — | 28–35° |
| 7d · 2026-09-14 | 25° | 30° | 24° | 23° | 33° | — | — | 23–33° |
| 6d · 2026-09-15 | 29° | 29° | 29° | 24° | 35° | 35° | 28° | 24–35° |
| 5d · 2026-09-16 | 30° | 24° | 30° | 29° | 34° | 30° | 36° | 24–36° |
| 4d · 2026-09-17 | 28° | 26° | 28° | 28° | 33° | 28° | 31° | 26–33° |
| 3d · 2026-09-18 | 27° | 27° | 29° | 30° | 32° | 30° | 29° | 27–32° |
| 2d · 2026-09-19 | 28° | 27° | 28° | 27° | 28° | 29° | 29° | 27–29° |
| 1d · 2026-09-20 | 28° | 28° | 31° | 29° | 32° | 30° | 31° | 28–32° |
| 0d · 2026-09-21 | 26° | 28° | 28° | 29° | 30° | 28° | 31° | 26–31° |
| actual | 29° |
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 Oklahoma City — 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 OKC observations. Archive depth varies by city; receipts exist only for dates the archive watched arrive.