Was the forecast right for Los Angeles on Mon Sep 14?
Los Angeles, California · daily high temperature in °F · forecasts from each model's archived runs, verified against the FHMC1 observations
13 days out, 4 models put Los Angeles's Mon Sep 14 high anywhere from 73° to 84°; by the final call the field had settled to a median of 85°. The day verified at 85° against the FHMC1 observations — cloudy.
GFS landed closest, off by 0.3°. AIGFS ran 9° cold.
What every model said, at every lead
Daily-high calls for Mon Sep 14 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 Los Angeles scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-08-30 | — | 81° | — | — | 85° | — | — | 81–85° |
| 14d · 2026-08-31 | 74° | 83° | — | — | 82° | — | — | 74–83° |
| 13d · 2026-09-01 | 78° | 73° | 80° | — | 84° | — | — | 73–84° |
| 12d · 2026-09-02 | 76° | 82° | 76° | — | 86° | — | — | 76–86° |
| 11d · 2026-09-03 | 94° | 82° | 88° | — | 86° | — | — | 82–94° |
| 10d · 2026-09-04 | 85° | 82° | 79° | — | 89° | — | — | 79–89° |
| 9d · 2026-09-05 | 88° | 71° | 88° | — | 83° | — | — | 71–88° |
| 8d · 2026-09-06 | 90° | 72° | 79° | 90° | 88° | — | — | 72–90° |
| 7d · 2026-09-07 | 82° | 79° | 82° | 96° | 86° | — | — | 79–96° |
| 6d · 2026-09-08 | 83° | 83° | 82° | 97° | 84° | 84° | — | 82–97° |
| 5d · 2026-09-09 | 82° | 78° | 83° | 85° | 84° | 83° | 82° | 78–85° |
| 4d · 2026-09-10 | 83° | 76° | 87° | 91° | 82° | 85° | 84° | 76–91° |
| 3d · 2026-09-11 | 81° | 76° | 86° | 88° | 87° | 86° | 82° | 76–88° |
| 2d · 2026-09-12 | 80° | 76° | 86° | 87° | 86° | 86° | 82° | 76–87° |
| 1d · 2026-09-13 | 80° | 76° | 87° | 86° | 85° | 87° | 83° | 76–87° |
| 0d · 2026-09-14 | 78° | 76° | 87° | 86° | 85° | 87° | 83° | 76–87° |
| actual | 85° |
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 Los Angeles — 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 FHMC1 observations. Archive depth varies by city; receipts exist only for dates the archive watched arrive.