Was the forecast right for Los Angeles on Sat Aug 1?
Los Angeles, California · daily high temperature · forecasts from each model's archived runs, verified against ERA5
5 days out, 7 models put Los Angeles's Sat Aug 1 high anywhere from 87° to 97°; by the final call the field had settled to a median of 92°. ERA5 says the day verified at 96° — partly cloudy.
GFS landed closest, off by 0.3°. AIGFS ran 16° cold.
What every model said, at every lead
Daily-high calls for Sat Aug 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 |
|---|---|---|---|---|---|---|---|---|
| 5d · 2026-07-27 | 90° | 87° | 97° | 96° | 94° | 88° | 93° | 87–97° |
| 4d · 2026-07-28 | 90° | 81° | 98° | 98° | 96° | 88° | 93° | 81–98° |
| 3d · 2026-07-29 | 90° | 81° | 97° | 95° | 97° | 89° | 95° | 81–97° |
| 2d · 2026-07-30 | 90° | 80° | 99° | 93° | 97° | 89° | 94° | 80–99° |
| 1d · 2026-07-31 | 90° | 81° | 99° | 94° | 94° | 89° | 94° | 81–99° |
| 0d · 2026-08-01 | 89° | 79° | 97° | 93° | 95° | 88° | 92° | 79–97° |
| actual | 96° |
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 ERA5 reanalysis (temperature_2m_max). Archive depth varies by city; receipts exist only for dates the archive watched arrive.