Was the forecast right for New York on Wed Aug 5?
New York, New York · daily high temperature · forecasts from each model's archived runs, verified against ERA5
9 days out, 4 models put New York's Wed Aug 5 high anywhere from 78° to 90°; by the final call the field had settled to a median of 82°. ERA5 says the day verified at 83° with 0.06 in of precipitation — drizzle.
ICON landed closest, off by 0.1°. AIFS ran 2° cold.
What every model said, at every lead
Daily-high calls for Wed Aug 5 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 York scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 9d · 2026-07-27 | 78° | 88° | 85° | — | 90° | — | — | 78–90° |
| 8d · 2026-07-28 | 81° | 86° | 85° | 77° | 86° | — | — | 77–86° |
| 7d · 2026-07-29 | 86° | 85° | 85° | 84° | 90° | — | — | 84–90° |
| 6d · 2026-07-30 | 82° | 82° | 82° | 82° | 85° | 78° | — | 78–85° |
| 5d · 2026-07-31 | 85° | 84° | 82° | 78° | 84° | 79° | 76° | 76–85° |
| 4d · 2026-08-01 | 80° | 83° | 82° | 80° | 85° | 82° | 85° | 80–85° |
| 3d · 2026-08-02 | 79° | 77° | 82° | 79° | 83° | 83° | 80° | 77–83° |
| 2d · 2026-08-03 | 80° | 76° | 80° | 83° | 82° | 79° | 85° | 76–85° |
| 1d · 2026-08-04 | 82° | 78° | 78° | 84° | 79° | 81° | 83° | 78–84° |
| 0d · 2026-08-05 | 80° | 82° | 82° | 82° | 81° | 83° | 82° | 80–83° |
| actual | 83° |
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 York — 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 ERA5 reanalysis (temperature_2m_max). Archive depth varies by city; receipts exist only for dates the archive watched arrive.