Was the forecast right for Houston on Thu Aug 6?
Houston, Texas · daily high temperature in °F · forecasts from each model's archived runs, verified against the ECMWF IFS analysis
11 days out, 4 models put Houston's Thu Aug 6 high anywhere from 86° to 103°;by the final call, the day before, the field had settled to a median of 95°. The day verified at 91° against the ECMWF IFS analysis, with 0.18 in of precipitation — rain.
AIFS landed closest, off by 2.5°. AIGFS ran 7° warm.
What every model said, at every lead
Daily-high calls for Thu Aug 6 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 |
|---|---|---|---|---|---|---|---|---|
| 11d · 2026-07-26 | 88° | 86° | 96° | — | 103° | — | — | 86–103° |
| 10d · 2026-07-27 | 92° | 97° | 96° | — | 98° | — | — | 92–98° |
| 9d · 2026-07-28 | 91° | 98° | 97° | 95° | 98° | — | — | 91–98° |
| 8d · 2026-07-29 | 94° | 97° | 96° | 95° | 99° | — | — | 94–99° |
| 7d · 2026-07-30 | 94° | 98° | 95° | 93° | 98° | — | — | 93–98° |
| 6d · 2026-07-31 | 95° | 98° | 94° | 95° | 99° | 92° | 94° | 92–99° |
| 5d · 2026-08-01 | 94° | 97° | 95° | 92° | 100° | 93° | 92° | 92–100° |
| 4d · 2026-08-02 | 94° | 97° | 95° | 91° | 102° | 96° | 91° | 91–102° |
| 3d · 2026-08-03 | 94° | 98° | 95° | 96° | 100° | 94° | 94° | 94–100° |
| 2d · 2026-08-04 | 94° | 98° | 95° | 96° | 101° | 95° | 94° | 94–101° |
| 1d · 2026-08-05 | 94° | 98° | 96° | 95° | 94° | 94° | 95° | 94–98° |
| actual | 91° |
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 ECMWF IFS analysis (temperature_2m_max). 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.