Was the forecast right for Berlin on Tue Sep 15?
Berlin, State of Berlin · daily high temperature in °C · forecasts from each model's archived runs, verified against the EDDB observations
14 days out, 4 models put Berlin's Tue Sep 15 high anywhere from 14° to 29°; by the final call the field had settled to a median of 24°. The day verified at 26° against the EDDB observations — cloudy.
GEM landed closest, off by 1.3°. AIGFS ran 3° cold.
What every model said, at every lead
Daily-high calls for Tue Sep 15 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 Berlin scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-08-31 | — | 18° | — | — | 28° | — | — | 18–28° |
| 14d · 2026-09-01 | 14° | 16° | 16° | — | 29° | — | — | 14–29° |
| 13d · 2026-09-02 | 16° | 18° | 17° | — | 18° | — | — | 16–18° |
| 12d · 2026-09-03 | 19° | 13° | 17° | — | 20° | — | — | 13–20° |
| 11d · 2026-09-04 | 24° | 18° | 16° | — | 17° | — | — | 16–24° |
| 10d · 2026-09-05 | 19° | 19° | 21° | — | 18° | — | — | 18–21° |
| 9d · 2026-09-06 | 22° | 22° | 23° | 22° | 26° | — | — | 22–26° |
| 8d · 2026-09-07 | 21° | 22° | 25° | 22° | 28° | — | — | 21–28° |
| 7d · 2026-09-08 | 20° | 22° | 25° | 22° | 26° | — | — | 20–26° |
| 6d · 2026-09-09 | 23° | 21° | 22° | 24° | 25° | 28° | 23° | 21–28° |
| 5d · 2026-09-10 | 19° | 20° | 24° | 24° | 24° | 22° | 22° | 19–24° |
| 4d · 2026-09-11 | 23° | 22° | 24° | 24° | 24° | 24° | 24° | 22–24° |
| 3d · 2026-09-12 | 23° | 21° | 23° | 25° | 25° | 25° | 23° | 21–25° |
| 2d · 2026-09-13 | 24° | 22° | 23° | 24° | 25° | 25° | 24° | 22–25° |
| 1d · 2026-09-14 | 24° | 22° | 24° | 24° | 25° | 24° | 24° | 22–25° |
| 0d · 2026-09-15 | 24° | 23° | 24° | 25° | 24° | 24° | 24° | 23–25° |
| actual | 26° |
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 Berlin — 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 EDDB observations. Archive depth varies by city; receipts exist only for dates the archive watched arrive.