Was the forecast right for Philadelphia on Sat Oct 24?
Philadelphia, Pennsylvania · daily high temperature in °F · forecasts from each model's archived runs, verified against the PHL observations
14 days out, 4 models put Philadelphia's Sat Oct 24 high anywhere from 54° to 72°;by the final call, the day before, the field had settled to a median of 62°. The day verified at 63° against the PHL observations — cloudy.
AIFS landed closest, off by 0.2°. UKMO ran 5° cool.
What every model said, at every lead
Daily-high calls for Sat Oct 24 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 Philadelphia scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-10-09 | — | 57° | — | — | 72° | — | — | 57–72° |
| 14d · 2026-10-10 | 67° | 64° | 72° | — | 54° | — | — | 54–72° |
| 13d · 2026-10-11 | 59° | 59° | 70° | — | 56° | — | — | 56–70° |
| 12d · 2026-10-12 | — | 59° | 70° | — | 74° | — | — | 59–74° |
| 11d · 2026-10-13 | 68° | 62° | 71° | — | 53° | — | — | 53–71° |
| 10d · 2026-10-14 | 62° | 73° | 58° | — | 73° | — | — | 58–73° |
| 9d · 2026-10-15 | 60° | 72° | 62° | 70° | 67° | — | — | 60–72° |
| 8d · 2026-10-16 | 54° | 62° | 58° | 55° | 61° | — | — | 54–62° |
| 7d · 2026-10-17 | 62° | 59° | 61° | 60° | 62° | — | — | 59–62° |
| 6d · 2026-10-18 | 62° | 62° | 56° | 60° | 61° | 60° | 61° | 56–62° |
| 5d · 2026-10-19 | 64° | 62° | 57° | 62° | 62° | 60° | 57° | 57–64° |
| 4d · 2026-10-20 | 63° | 62° | 59° | 62° | 64° | 64° | 57° | 57–64° |
| 3d · 2026-10-21 | 63° | 62° | 60° | 62° | 64° | 62° | 57° | 57–64° |
| 2d · 2026-10-22 | 63° | 62° | 60° | 63° | 63° | 63° | 58° | 58–63° |
| 1d · 2026-10-23 | 63° | 62° | 61° | 62° | 64° | 64° | 58° | 58–64° |
| actual | 63° |
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 Philadelphia — 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 PHL observations. The actual values are the ones in hand when this receipt was settled, usually 2 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.