Was the forecast right for Dallas on Sun Aug 9?
Dallas, Texas · daily high temperature in °F · forecasts from each model's archived runs, verified against ERA5
13 days out, 4 models put Dallas's Sun Aug 9 high anywhere from 97° to 105°; by the final call the field had settled to a median of 99°. ERA5 says the day verified at 97° with 0.17 in of precipitation — drizzle.
GEM landed closest, off by 0.4°. ECMWF ran 4° hot.
What every model said, at every lead
Daily-high calls for Sun Aug 9 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 Dallas scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 13d · 2026-07-27 | 97° | 97° | 105° | — | 105° | — | — | 97–105° |
| 12d · 2026-07-28 | 96° | 99° | 102° | — | 106° | — | — | 96–106° |
| 11d · 2026-07-29 | 103° | 96° | 104° | — | 104° | — | — | 96–104° |
| 10d · 2026-07-30 | 89° | 96° | 103° | — | 105° | — | — | 89–105° |
| 9d · 2026-07-31 | 98° | 103° | 102° | — | 103° | — | — | 98–103° |
| 8d · 2026-08-01 | 100° | 101° | 103° | 99° | 105° | — | — | 99–105° |
| 7d · 2026-08-02 | 90° | 99° | 99° | 99° | 101° | — | — | 90–101° |
| 6d · 2026-08-03 | 98° | 100° | 101° | 100° | 103° | 102° | — | 98–103° |
| 5d · 2026-08-04 | 100° | 102° | 104° | 99° | 103° | 102° | 102° | 99–104° |
| 4d · 2026-08-05 | 98° | 100° | 102° | 99° | 103° | 103° | 101° | 98–103° |
| 3d · 2026-08-06 | 98° | 98° | 101° | 99° | 103° | 101° | 97° | 97–103° |
| 2d · 2026-08-07 | 100° | 100° | 100° | 100° | 102° | 101° | 98° | 98–102° |
| 1d · 2026-08-08 | 99° | 98° | 102° | 100° | 101° | 101° | 103° | 98–103° |
| 0d · 2026-08-09 | 98° | 98° | 102° | 98° | 100° | 99° | 100° | 98–102° |
| actual | 97° |
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 Dallas — 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 ERA5 reanalysis (temperature_2m_max). Archive depth varies by city; receipts exist only for dates the archive watched arrive.