Was the forecast right for Charlotte on Wed Sep 30?
Charlotte, North Carolina · daily high temperature in °F · forecasts from each model's archived runs, verified against the CLT observations
14 days out, 4 models put Charlotte's Wed Sep 30 high anywhere from 58° to 73°;by the final call, the day before, the field had settled to a median of 85°. The day verified at 85° against the CLT observations — partly cloudy.
AIGFS landed closest, off by 0.3°. UKMO ran 4° cool.
What every model said, at every lead
Daily-high calls for Wed Sep 30 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 Charlotte scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 15d · 2026-09-15 | — | 73° | — | — | 90° | — | — | 73–90° |
| 14d · 2026-09-16 | 73° | 58° | 72° | — | 68° | — | — | 58–73° |
| 13d · 2026-09-17 | 73° | 68° | 87° | — | 82° | — | — | 68–87° |
| 12d · 2026-09-18 | 80° | 77° | 81° | — | 87° | — | — | 77–87° |
| 11d · 2026-09-19 | 78° | 62° | 78° | — | 71° | — | — | 62–78° |
| 10d · 2026-09-20 | 80° | 78° | 70° | — | 84° | — | — | 70–84° |
| 9d · 2026-09-21 | 83° | 85° | 81° | 79° | 82° | — | — | 79–85° |
| 8d · 2026-09-22 | 83° | 84° | 80° | 79° | 85° | — | — | 79–85° |
| 7d · 2026-09-23 | 84° | 83° | 87° | 82° | 86° | — | — | 82–87° |
| 6d · 2026-09-24 | 84° | 85° | 87° | 82° | 86° | 82° | 81° | 81–87° |
| 5d · 2026-09-25 | 84° | 85° | 86° | 84° | 88° | 82° | 79° | 79–88° |
| 4d · 2026-09-26 | 85° | 85° | 87° | 83° | 87° | 83° | 81° | 81–87° |
| 3d · 2026-09-27 | 86° | 85° | 88° | 85° | 86° | 84° | 82° | 82–88° |
| 2d · 2026-09-28 | 85° | 85° | 86° | 85° | 87° | 84° | 82° | 82–87° |
| 1d · 2026-09-29 | 84° | 85° | 86° | 86° | 86° | 83° | 81° | 81–86° |
| 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 Charlotte — 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 CLT 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.