Was the forecast right for Atlanta on Tue Aug 25?

Atlanta, Georgia · daily high temperature in °C · forecasts from each model's archived runs, verified against the ATL observations

3 days out, 7 models put Atlanta's Tue Aug 25 high anywhere from 28° to 34°; by the final call the field had settled to a median of 32°. The day verified at 34° against the ATL observations — partly cloudy.

ECMWF landed closest, off by 0.1°. AIFS ran 3° cold.

3 days out the models said 28–34; it hit 34. ECMWF led (off 0.1°C); AIFS ran 3°C cold. — The shareable card for this receipt — what this page looks like pasted into a thread.

What every model said, at every lead

Daily-high calls for Tue Aug 25 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
3d · 2026-08-22	32°	31°	28°	31°	34°	32°	29°	28–34°
2d · 2026-08-23	32°	31°	35°	32°	35°	32°	31°	31–35°
1d · 2026-08-24	32°	32°	35°	31°	36°	32°	32°	31–36°
0d · 2026-08-25	31°	33°	35°	31°	35°	32°	32°	31–35°
actual								34°

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.