Was the forecast right for Charlotte on Sat Aug 15?
Charlotte, North Carolina · daily high temperature in °F · forecasts from each model's archived runs, verified against the ECMWF IFS analysis
13 days out, 4 models put Charlotte's Sat Aug 15 high anywhere from 86° to 98°; by the final call the field had settled to a median of 95°. The ECMWF IFS analysis says the day verified at 95° with 0.35 in of precipitation — thunderstorms.
GFS landed closest, off by 0.0°. ICON ran 3° cold.
What every model said, at every lead
Daily-high calls for Sat Aug 15 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 · 2026-07-31 | — | 84° | — | — | 100° | — | — | 84–100° |
| 14d · 2026-08-01 | 84° | 84° | — | — | 98° | — | — | 84–98° |
| 13d · 2026-08-02 | 87° | 86° | 89° | — | 98° | — | — | 86–98° |
| 12d · 2026-08-03 | 88° | 87° | 86° | — | 92° | — | — | 86–92° |
| 11d · 2026-08-04 | 86° | 89° | 80° | — | 86° | — | — | 80–89° |
| 10d · 2026-08-05 | 85° | 89° | 96° | — | 79° | — | — | 79–96° |
| 9d · 2026-08-06 | 95° | 87° | 86° | — | 99° | — | — | 86–99° |
| 8d · 2026-08-07 | 95° | 84° | 95° | 86° | 88° | — | — | 84–95° |
| 7d · 2026-08-08 | 90° | 84° | 99° | 83° | 90° | — | — | 83–99° |
| 6d · 2026-08-09 | 91° | 93° | 94° | 83° | 83° | 101° | — | 83–101° |
| 5d · 2026-08-10 | 90° | 92° | 100° | 86° | 89° | 99° | 97° | 86–100° |
| 4d · 2026-08-11 | 90° | 96° | 95° | 83° | 98° | 99° | 90° | 83–99° |
| 3d · 2026-08-12 | 93° | 97° | 98° | 93° | 92° | 94° | 96° | 92–98° |
| 2d · 2026-08-13 | 95° | 95° | 100° | 93° | 101° | 92° | 89° | 89–101° |
| 1d · 2026-08-14 | 94° | 96° | 95° | 99° | 98° | 93° | 98° | 93–99° |
| 0d · 2026-08-15 | 93° | 97° | 94° | 97° | 95° | 92° | 95° | 92–97° |
| actual | 95° |
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 ECMWF IFS analysis (temperature_2m_max). Archive depth varies by city; receipts exist only for dates the archive watched arrive.