Was the forecast right for Atlanta on Sun Oct 11?
Atlanta, Georgia · daily high temperature in °F · forecasts from each model's archived runs, verified against the ATL observations
14 days out, 4 models put Atlanta's Sun Oct 11 high anywhere from 62° to 79°;by the final call, the day before, the field had settled to a median of 69°. The day verified at 70° against the ATL observations, with 0.01 in of precipitation — drizzle.
ECMWF landed closest, off by 0.2°. AIGFS ran 3° cool.
What every model said, at every lead
Daily-high calls for Sun Oct 11 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 |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-09-26 | — | 74° | — | — | 78° | — | — | 74–78° |
| 14d · 2026-09-27 | 79° | 69° | 62° | — | 70° | — | — | 62–79° |
| 13d · 2026-09-28 | 78° | 74° | 68° | — | 73° | — | — | 68–78° |
| 12d · 2026-09-29 | 72° | 73° | 70° | — | 58° | — | — | 58–73° |
| 11d · 2026-09-30 | 72° | 77° | 76° | — | 66° | — | — | 66–77° |
| 10d · 2026-10-01 | 68° | 70° | 75° | — | 82° | — | — | 68–82° |
| 9d · 2026-10-02 | 75° | 68° | 76° | 77° | 84° | — | — | 68–84° |
| 8d · 2026-10-03 | 70° | 73° | 69° | 76° | 70° | — | — | 69–76° |
| 7d · 2026-10-04 | 70° | 68° | 66° | 74° | 67° | — | — | 66–74° |
| 6d · 2026-10-05 | 65° | 68° | 74° | 65° | 69° | 79° | 73° | 65–79° |
| 5d · 2026-10-06 | 68° | 69° | 76° | 66° | 67° | 71° | 73° | 66–76° |
| 4d · 2026-10-07 | 69° | 67° | 82° | 75° | 78° | 73° | 77° | 67–82° |
| 3d · 2026-10-08 | 68° | 65° | 72° | 68° | 70° | 71° | 71° | 65–72° |
| 2d · 2026-10-09 | 68° | 66° | 76° | 70° | 68° | 68° | 70° | 66–76° |
| 1d · 2026-10-10 | 68° | 67° | 70° | 68° | 69° | 69° | 71° | 67–71° |
| actual | 70° |
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. The actual values are the ones in hand when this receipt was settled, usually 2 days after the date; a correction published after that is not carried into it. Archive depth varies by city; receipts exist only for dates the archive watched arrive.