Was the forecast right for Atlanta on Fri Aug 28?
Atlanta, Georgia · daily high temperature in °F · forecasts from each model's archived runs, verified against the ATL observations
6 days out, 6 models put Atlanta's Fri Aug 28 high anywhere from 72° to 91°; by the final call the field had settled to a median of 89°. The day verified at 93° against the ATL observations — showers.
GFS landed closest, off by 1.1°. AIFS ran 6° cold.
What every model said, at every lead
Daily-high calls for Fri Aug 28 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 Atlanta scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 6d · 2026-08-22 | 85° | 87° | 86° | 72° | 91° | 82° | — | 72–91° |
| 5d · 2026-08-23 | 87° | 87° | 87° | 84° | 89° | 92° | 89° | 84–92° |
| 4d · 2026-08-24 | 86° | 87° | 84° | 87° | 88° | 92° | 88° | 84–92° |
| 3d · 2026-08-25 | 83° | 84° | 87° | 80° | 85° | 80° | 87° | 80–87° |
| 2d · 2026-08-26 | 86° | 88° | 91° | 86° | 81° | 87° | 95° | 81–95° |
| 1d · 2026-08-27 | 87° | 88° | 90° | 85° | 89° | 90° | 87° | 85–90° |
| 0d · 2026-08-28 | 87° | 89° | 89° | 87° | 94° | 87° | 89° | 87–94° |
| actual | 93° |
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 Atlanta — 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 ATL observations. Archive depth varies by city; receipts exist only for dates the archive watched arrive.