Was the forecast right for Los Angeles on Sat Aug 1?
Los Angeles, California · daily high temperature in °C · forecasts from each model's archived runs, verified against the ECMWF IFS analysis
6 days out, 7 models put Los Angeles's Sat Aug 1 high anywhere from 30° to 35°;by the final call, the day before, the field had settled to a median of 33°. The day verified at 35° against the ECMWF IFS analysis — partly cloudy.
GFS landed closest, off by 0.1°. AIGFS ran 8° cool.
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 |
|---|---|---|---|---|---|---|---|---|
| 6d · 2026-07-26 | 32° | 30° | 34° | 35° | 34° | 32° | 35° | 30–35° |
| 5d · 2026-07-27 | 32° | 28° | 37° | 37° | 35° | 32° | 35° | 28–37° |
| 4d · 2026-07-28 | 32° | 26° | 37° | 36° | 36° | 30° | 35° | 26–37° |
| 3d · 2026-07-29 | 32° | 27° | 37° | 34° | 36° | 32° | 34° | 27–37° |
| 2d · 2026-07-30 | 32° | 27° | 38° | 34° | 36° | 32° | 35° | 27–38° |
| 1d · 2026-07-31 | 31° | 27° | 37° | 34° | 35° | 31° | 33° | 27–37° |
| actual | 35° |
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 ECMWF IFS analysis (temperature_2m_max). 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.