Was the forecast right for Atlanta on Thu Aug 27?
Atlanta, Georgia · daily high temperature in °F · forecasts from each model's archived runs, verified against the ATL observations
5 days out, 7 models put Atlanta's Thu Aug 27 high anywhere from 76° to 91°; by the final call the field had settled to a median of 85°. The day verified at 89° against the ATL observations, with 0.58 in of precipitation — thunderstorms.
AIGFS landed closest, off by 2.1°. UKMO ran 7° cold.
What every model said, at every lead
Daily-high calls for Thu Aug 27 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 |
|---|---|---|---|---|---|---|---|---|
| 5d · 2026-08-22 | 81° | 77° | 76° | 83° | 85° | 80° | 91° | 76–91° |
| 4d · 2026-08-23 | 81° | 82° | 82° | 89° | 91° | 88° | 89° | 81–91° |
| 3d · 2026-08-24 | 80° | 81° | 90° | 88° | 82° | 89° | 92° | 80–92° |
| 2d · 2026-08-25 | 80° | 82° | 88° | 87° | 77° | 86° | 81° | 77–88° |
| 1d · 2026-08-26 | 86° | 88° | 91° | 89° | 92° | 85° | 93° | 85–93° |
| 0d · 2026-08-27 | 82° | 87° | 85° | 86° | 93° | 84° | 82° | 82–93° |
| 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 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.