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Was the forecast right for Salt Lake City on Mon Aug 24?

Salt Lake City, Utah · daily high temperature in °C · forecasts from each model's archived runs, verified against the SLC observations

4 days out, 7 models put Salt Lake City's Mon Aug 24 high anywhere from 31° to 35°;by the final call, the day before, the field had settled to a median of 33°. The day verified at 35° against the SLC observations, with 1.5 mm of precipitation — drizzle.

ICON landed closest, off by 0.4°. AIFS ran 4° cool.

4 days out the models said 31–35; it hit 35. ICON led (off 0.4°C); AIFS ran 4°C cool.
The shareable card for this receipt — what this page looks like pasted into a thread.

What every model said, at every lead

Daily-high calls for Mon Aug 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 Salt Lake City scoreboard shows them, labelled.

Lead AIFSAIGFSECMWFGEMGFSICONUKMO Range
4d · 2026-08-20 32° 31° 34° 32° 35° 35° 33° 31–35°
3d · 2026-08-21 33° 32° 34° 33° 34° 35° 34° 32–35°
2d · 2026-08-22 32° 32° 33° 32° 34° 36° 33° 32–36°
1d · 2026-08-23 31° 33° 32° 33° 34° 35° 33° 31–35°
actual 35°

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. 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.