Was the forecast right for New Orleans on Thu Sep 10?
New Orleans, Louisiana · daily high temperature in °F · forecasts from each model's archived runs, verified against the NEW observations
14 days out, 4 models put New Orleans's Thu Sep 10 high anywhere from 87° to 96°;by the final call, the day before, the field had settled to a median of 84°. The day verified at 84° against the NEW observations, with 0.42 in of precipitation — thunderstorms.
AIFS landed closest, off by 0.0°. GEM ran 4° warm.
What every model said, at every lead
Daily-high calls for Thu Sep 10 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 New Orleans scoreboard shows them, labeled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-08-26 | — | 92° | — | — | 94° | — | — | 92–94° |
| 14d · 2026-08-27 | 88° | 95° | 87° | — | 96° | — | — | 87–96° |
| 13d · 2026-08-28 | 87° | 91° | 83° | — | 94° | — | — | 83–94° |
| 12d · 2026-08-29 | 90° | 85° | 85° | — | 90° | — | — | 85–90° |
| 11d · 2026-08-30 | 85° | 90° | 88° | — | 90° | — | — | 85–90° |
| 10d · 2026-08-31 | 85° | 90° | 90° | — | 91° | — | — | 85–91° |
| 9d · 2026-09-01 | 86° | 91° | 88° | 89° | 94° | — | — | 86–94° |
| 8d · 2026-09-02 | 86° | 81° | 86° | 87° | 90° | — | — | 81–90° |
| 7d · 2026-09-03 | 87° | 91° | 86° | 87° | 94° | — | — | 86–94° |
| 6d · 2026-09-04 | 86° | 89° | 84° | 91° | 89° | 88° | 86° | 84–91° |
| 5d · 2026-09-05 | 86° | 88° | 85° | 90° | 93° | 90° | 84° | 84–93° |
| 4d · 2026-09-06 | 85° | 87° | 84° | 82° | 92° | 92° | 82° | 82–92° |
| 3d · 2026-09-07 | 85° | 86° | 86° | 89° | 91° | 85° | 83° | 83–91° |
| 2d · 2026-09-08 | 84° | 89° | 85° | 84° | 89° | 83° | 83° | 83–89° |
| 1d · 2026-09-09 | 84° | 87° | 84° | 88° | 88° | 84° | 83° | 83–88° |
| actual | 84° |
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 New Orleans — 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 NEW observations. The actual values are the ones in hand when this day was verified, usually 2 days after the date; a correction published after that is not carried into it. Archive depth varies by city; verified days exist only for dates the archive watched arrive.