Was the forecast right for Houston on Tue Sep 15?
Houston, Texas · daily high temperature in °F · forecasts from each model's archived runs, verified against the HOU observations
13 days out, 4 models put Houston's Tue Sep 15 high anywhere from 84° to 98°; by the final call the field had settled to a median of 94°. The day verified at 96° against the HOU observations, with 1.21 in of precipitation — thunderstorms.
AIGFS landed closest, off by 0.3°. GFS ran 3° cold.
What every model said, at every lead
Daily-high calls for Tue Sep 15 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 Houston scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-08-31 | — | 90° | — | — | 97° | — | — | 90–97° |
| 14d · 2026-09-01 | 87° | 96° | — | — | 100° | — | — | 87–100° |
| 13d · 2026-09-02 | 89° | 98° | 84° | — | 97° | — | — | 84–98° |
| 12d · 2026-09-03 | 94° | 96° | 86° | — | 99° | — | — | 86–99° |
| 11d · 2026-09-04 | 89° | 91° | 92° | — | 96° | — | — | 89–96° |
| 10d · 2026-09-05 | 90° | 93° | 91° | — | 96° | — | — | 90–96° |
| 9d · 2026-09-06 | 89° | 95° | 86° | — | 70° | — | — | 70–95° |
| 8d · 2026-09-07 | 92° | 99° | 89° | 91° | 98° | — | — | 89–99° |
| 7d · 2026-09-08 | 92° | 94° | 90° | 93° | 92° | — | — | 90–94° |
| 6d · 2026-09-09 | 92° | 96° | 92° | 92° | 94° | 97° | — | 92–97° |
| 5d · 2026-09-10 | 92° | 95° | 91° | 92° | 94° | 94° | 96° | 91–96° |
| 4d · 2026-09-11 | 92° | 95° | 90° | 92° | 95° | 93° | 94° | 90–95° |
| 3d · 2026-09-12 | 93° | 95° | 91° | 94° | 95° | 93° | 92° | 91–95° |
| 2d · 2026-09-13 | 93° | 95° | 90° | 90° | 95° | 93° | 91° | 90–95° |
| 1d · 2026-09-14 | 93° | 95° | 91° | 92° | 95° | 94° | 96° | 91–96° |
| 0d · 2026-09-15 | 94° | 96° | 93° | 95° | 93° | 94° | 97° | 93–97° |
| actual | 96° |
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 Houston — 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 HOU observations. Archive depth varies by city; receipts exist only for dates the archive watched arrive.