Was the forecast right for Miami on Mon Aug 3?
Miami, Florida · daily high temperature · forecasts from each model's archived runs, verified against ERA5
7 days out, 5 models put Miami's Mon Aug 3 high anywhere from 87° to 92°; by the final call the field had settled to a median of 89°. ERA5 says the day verified at 89° with 1.74 in of precipitation — rain.
ICON landed closest, off by 0.0°. GFS ran 3° cold.
What every model said, at every lead
Daily-high calls for Mon Aug 3 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 Miami scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 7d · 2026-07-27 | 87° | 89° | 90° | 92° | 89° | — | — | 87–92° |
| 6d · 2026-07-28 | 86° | 92° | 85° | 93° | 90° | 91° | — | 85–93° |
| 5d · 2026-07-29 | 87° | 91° | 90° | 92° | 89° | 91° | 90° | 87–92° |
| 4d · 2026-07-30 | 86° | 92° | 86° | 92° | 90° | 89° | 89° | 86–92° |
| 3d · 2026-07-31 | 86° | 92° | 88° | 91° | 90° | 89° | 91° | 86–92° |
| 2d · 2026-08-01 | 85° | 89° | 89° | 91° | 89° | 88° | 91° | 85–91° |
| 1d · 2026-08-02 | 87° | 91° | 89° | 91° | 86° | 87° | 94° | 86–94° |
| 0d · 2026-08-03 | 88° | 90° | 88° | 90° | 86° | 89° | 91° | 86–91° |
| actual | 89° |
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 Miami — 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.