Was the forecast right for Dallas on Tue Sep 1?
Dallas, Texas · daily high temperature in °F · forecasts from each model's archived runs, verified against the DAL observations
12 days out, 4 models put Dallas's Tue Sep 1 high anywhere from 98° to 105°;by the final call, the day before, the field had settled to a median of 100°. The day verified at 100° against the DAL observations — drizzle.
GEM landed closest, off by 0.2°. GFS ran 3° warm.
What every model said, at every lead
Daily-high calls for Tue Sep 1 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 |
|---|---|---|---|---|---|---|---|---|
| 12d · 2026-08-20 | 103° | 98° | 103° | — | 105° | — | — | 98–105° |
| 11d · 2026-08-21 | 99° | 100° | 104° | — | 103° | — | — | 99–104° |
| 10d · 2026-08-22 | 100° | 102° | 106° | — | 103° | — | — | 100–106° |
| 9d · 2026-08-23 | 99° | 100° | 103° | 100° | 106° | — | — | 99–106° |
| 8d · 2026-08-24 | 101° | 98° | 100° | 100° | 102° | — | — | 98–102° |
| 7d · 2026-08-25 | 100° | 100° | 100° | 100° | 99° | — | — | 99–100° |
| 6d · 2026-08-26 | 100° | 98° | 100° | 97° | 103° | 100° | 97° | 97–103° |
| 5d · 2026-08-27 | 101° | 99° | 101° | 98° | 103° | 100° | 98° | 98–103° |
| 4d · 2026-08-28 | 100° | 99° | 102° | 100° | 103° | 99° | 101° | 99–103° |
| 3d · 2026-08-29 | 99° | 98° | 100° | 99° | 104° | 99° | 98° | 98–104° |
| 2d · 2026-08-30 | 99° | 99° | 100° | 100° | 102° | 100° | 99° | 99–102° |
| 1d · 2026-08-31 | 98° | 99° | 100° | 100° | 103° | 101° | 98° | 98–103° |
| actual | 100° |
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 the DAL 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.