Was the forecast right for Atlanta on Mon Oct 26?
Atlanta, Georgia · daily high temperature in °F · forecasts from each model's archived runs, verified against the ATL observations
13 days out, 4 models put Atlanta's Mon Oct 26 high anywhere from 71° to 82°;by the final call, the day before, the field had settled to a median of 69°. The day verified at 71° against the ATL observations — cloudy.
AIGFS landed closest, off by 0.3°. AIFS ran 2° cool.
What every model said, at every lead
Daily-high calls for Mon Oct 26 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, labeled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-10-11 | — | 62° | — | — | 76° | — | — | 62–76° |
| 14d · 2026-10-12 | — | 61° | 76° | — | 68° | — | — | 61–76° |
| 13d · 2026-10-13 | 71° | 77° | 82° | — | 81° | — | — | 71–82° |
| 12d · 2026-10-14 | 73° | 78° | 76° | — | 78° | — | — | 73–78° |
| 11d · 2026-10-15 | 74° | 70° | 75° | — | 73° | — | — | 70–75° |
| 10d · 2026-10-16 | 71° | 73° | 74° | — | 77° | — | — | 71–77° |
| 9d · 2026-10-17 | 70° | 68° | 72° | 65° | 73° | — | — | 65–73° |
| 8d · 2026-10-18 | 72° | 71° | 73° | 67° | 68° | — | — | 67–73° |
| 7d · 2026-10-19 | 72° | 71° | 69° | 71° | 72° | — | — | 69–72° |
| 6d · 2026-10-20 | 70° | 71° | 68° | 71° | 72° | 70° | 68° | 68–72° |
| 5d · 2026-10-21 | 70° | 70° | 69° | 71° | 73° | 69° | 69° | 69–73° |
| 4d · 2026-10-22 | 69° | 70° | 69° | 71° | 73° | 70° | 68° | 68–73° |
| 3d · 2026-10-23 | 69° | 70° | 69° | 70° | 73° | 69° | 70° | 69–73° |
| 2d · 2026-10-24 | 68° | 70° | 69° | 69° | 74° | 70° | 69° | 68–74° |
| 1d · 2026-10-25 | 69° | 71° | 69° | 69° | 73° | 70° | 69° | 69–73° |
| actual | 71° |
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 day was verified, usually 2 days after the date; a correction published after that is not carried into it. Archive depth varies by city; verified days exist only for dates the archive watched arrive.