Was the forecast right for Salt Lake City on Thu Aug 27?
Salt Lake City, Utah · daily high temperature in °F · forecasts from each model's archived runs, verified against the SLC observations
7 days out, 5 models put Salt Lake City's Thu Aug 27 high anywhere from 89° to 96°; by the final call the field had settled to a median of 96°. The day verified at 97° against the SLC observations, with 0.18 in of precipitation — drizzle.
ICON landed closest, off by 0.3°. AIFS ran 7° cold.
What every model said, at every lead
Daily-high calls for Thu Aug 27 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 Salt Lake City scoreboard shows them, labelled.
| Lead | AIFS | AIGFS | ECMWF | GEM | GFS | ICON | UKMO | Range |
|---|---|---|---|---|---|---|---|---|
| 7d · 2026-08-20 | 94° | 89° | 96° | 92° | 94° | — | — | 89–96° |
| 6d · 2026-08-21 | 94° | 91° | 93° | 92° | 96° | 91° | 95° | 91–96° |
| 5d · 2026-08-22 | 93° | 92° | 98° | 94° | 96° | 97° | 95° | 92–98° |
| 4d · 2026-08-23 | 94° | 92° | 96° | 92° | 98° | 92° | 93° | 92–98° |
| 3d · 2026-08-24 | 93° | 94° | 95° | 95° | 97° | 96° | 94° | 93–97° |
| 2d · 2026-08-25 | 93° | 94° | 95° | 96° | 98° | 95° | 93° | 93–98° |
| 1d · 2026-08-26 | 92° | 95° | 96° | 96° | 99° | 97° | 94° | 92–99° |
| 0d · 2026-08-27 | 90° | 94° | 94° | 96° | 98° | 97° | 96° | 90–98° |
| actual | 97° |
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 Salt Lake City — 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 SLC observations. Archive depth varies by city; receipts exist only for dates the archive watched arrive.