Was the forecast right for San Antonio on Tue Sep 8?
San Antonio, Texas · daily high temperature in °F · forecasts from each model's archived runs, verified against the SAT observations
14 days out, 4 models put San Antonio's Tue Sep 8 high anywhere from 87° to 99°;by the final call, the day before, the field had settled to a median of 99°. The day verified at 100° against the SAT observations — drizzle.
GFS landed closest, off by 0.2°. AIGFS ran 3° cool.
What every model said, at every lead
Daily-high calls for Tue Sep 8 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 San Antonio scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 14d · 2026-08-25 | 90° | 98° | 87° | — | 99° | — | — | 87–99° |
| 13d · 2026-08-26 | 96° | 95° | 93° | — | 104° | — | — | 93–104° |
| 12d · 2026-08-27 | 100° | 98° | 96° | — | 102° | — | — | 96–102° |
| 11d · 2026-08-28 | 98° | 101° | 95° | — | 102° | — | — | 95–102° |
| 10d · 2026-08-29 | 98° | 93° | 96° | — | 96° | — | — | 93–98° |
| 9d · 2026-08-30 | 95° | 98° | 94° | 95° | 102° | — | — | 94–102° |
| 8d · 2026-08-31 | 94° | 96° | 98° | 94° | 96° | — | — | 94–98° |
| 7d · 2026-09-01 | 95° | 96° | 91° | 95° | 101° | — | — | 91–101° |
| 6d · 2026-09-02 | 95° | 96° | 94° | 98° | 97° | 96° | 86° | 86–98° |
| 5d · 2026-09-03 | 95° | 95° | 97° | 97° | 99° | 90° | 86° | 86–99° |
| 4d · 2026-09-04 | 95° | 96° | 98° | 96° | 102° | 97° | 96° | 95–102° |
| 3d · 2026-09-05 | 98° | 96° | 99° | 96° | 99° | 98° | 98° | 96–99° |
| 2d · 2026-09-06 | 97° | 96° | 99° | 97° | 99° | 99° | 98° | 96–99° |
| 1d · 2026-09-07 | 98° | 97° | 99° | 97° | 100° | 100° | 100° | 97–100° |
| 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 San Antonio — 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 SAT 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.