Was the forecast right for Minneapolis on Wed Aug 5?
Minneapolis, Minnesota · daily high temperature in °F · forecasts from each model's archived runs, verified against the ECMWF IFS analysis
10 days out, 4 models put Minneapolis's Wed Aug 5 high anywhere from 79° to 87°;by the final call, the day before, the field had settled to a median of 80°. The day verified at 82° against the ECMWF IFS analysis — partly cloudy.
UKMO landed closest, off by 0.9°. AIGFS ran 3° cool.
What every model said, at every lead
Daily-high calls for Wed Aug 5 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 Minneapolis scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 10d · 2026-07-26 | 83° | 79° | 87° | — | 79° | — | — | 79–87° |
| 9d · 2026-07-27 | 85° | 80° | 84° | 82° | 76° | — | — | 76–85° |
| 8d · 2026-07-28 | 85° | 80° | 88° | 80° | 89° | — | — | 80–89° |
| 7d · 2026-07-29 | 80° | 76° | 80° | 70° | 81° | — | — | 70–81° |
| 6d · 2026-07-30 | 76° | 72° | 79° | 72° | 65° | 76° | 79° | 65–79° |
| 5d · 2026-07-31 | 77° | 75° | 79° | 75° | 90° | 79° | 80° | 75–90° |
| 4d · 2026-08-01 | 76° | 78° | 81° | 77° | 88° | 82° | 77° | 76–88° |
| 3d · 2026-08-02 | 78° | 78° | 80° | 80° | 86° | 82° | 80° | 78–86° |
| 2d · 2026-08-03 | 79° | 77° | 77° | 80° | 86° | 80° | 78° | 77–86° |
| 1d · 2026-08-04 | 80° | 79° | 80° | 83° | 82° | 80° | 81° | 79–83° |
| actual | 82° |
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 Minneapolis — 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 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.