Was the forecast right for Los Angeles on Thu Oct 1?
Los Angeles, California · daily high temperature in °F · forecasts from each model's archived runs, verified against the FHMC1 observations
14 days out, 4 models put Los Angeles's Thu Oct 1 high anywhere from 73° to 88°;by the final call, the day before, the field had settled to a median of 87°. The day verified at 85° against the FHMC1 observations — clear.
UKMO landed closest, off by 0.4°. GEM ran 8° warm.
What every model said, at every lead
Daily-high calls for Thu Oct 1 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 · 2026-09-16 | — | 84° | — | — | 86° | — | — | 84–86° |
| 14d · 2026-09-17 | 78° | 73° | 82° | — | 88° | — | — | 73–88° |
| 13d · 2026-09-18 | 81° | 89° | 79° | — | 77° | — | — | 77–89° |
| 12d · 2026-09-19 | 87° | 89° | 88° | — | 98° | — | — | 87–98° |
| 11d · 2026-09-20 | 77° | 73° | 90° | — | 75° | — | — | 73–90° |
| 10d · 2026-09-21 | 91° | 90° | 82° | — | 97° | — | — | 82–97° |
| 9d · 2026-09-22 | 91° | 86° | 76° | 94° | 89° | — | — | 76–94° |
| 8d · 2026-09-23 | 81° | 77° | 91° | 96° | 86° | — | — | 77–96° |
| 7d · 2026-09-24 | 81° | 76° | 83° | 91° | 82° | — | — | 76–91° |
| 6d · 2026-09-25 | 88° | 77° | 80° | 91° | 82° | 85° | 79° | 77–91° |
| 5d · 2026-09-26 | 85° | 81° | 89° | 94° | 87° | 88° | 90° | 81–94° |
| 4d · 2026-09-27 | 83° | 82° | 88° | 92° | 87° | 94° | 88° | 82–94° |
| 3d · 2026-09-28 | 83° | 78° | 90° | 93° | 88° | 94° | 85° | 78–94° |
| 2d · 2026-09-29 | 84° | 79° | 91° | 92° | 89° | 94° | 85° | 79–94° |
| 1d · 2026-09-30 | 84° | 80° | 87° | 93° | 88° | 93° | 85° | 80–93° |
| 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. The actual values are the ones in hand when this receipt was settled, usually 4 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.