Salt Lake City, UTHigh ≤ 53°F
Who takes which side?
Probabilities derived from each source’s mean and spread. Forecasts may have different initialization times.
Head-to-head preview
ILLUSTRATIVE · NOT EXECUTED25 contracts at the midpoint of these model probabilities. Each contract pays 1u to the winning side.
HRES +23.57u · AIFS −23.57u
These are current forecast comparisons, not locked entries. No credits have been committed. Read the proposed policy →
Probability history
Recorded source probabilities; timestamps mark snapshots. Repeated values may come from the same model run.
Forecasts & evidence
| MODEL | YES | MEAN | SPREAD σ | INITIALIZATION UTC | BRIER ↓ |
|---|---|---|---|---|---|
| NWS forecast | 11% | 59.0°F | 4.5°F | 2026-10-11 14:00 | 0.0119 |
| IFS HRES | 11% | 59.7°F | 5.0°F | 2026-10-11 00:00 | 0.0114 |
| ICON | 4% | 63.8°F | 5.9°F | 2026-10-10 12:00 | 0.0016 |
| IFS Ensemble | 4% | 61.9°F | 4.7°F | 2026-10-11 00:00 | 0.0014 |
| National Blend | 3% | 60.0°F | 3.4°F | 2026-10-11 06:00 | 0.0007 |
| WeatherNext 2 | 2% | 61.1°F | 3.7°F | 2026-10-11 06:00 | 0.0004 |
| AIFS Single | <1% | 64.7°F | 4.6°F | 2026-10-11 06:00 | 0.0000 |
Spread is the standard deviation used in the probability approximation. It is not a measured confidence rating. Brier here scores the latest recorded snapshot, not a league deadline.
High ≤ 53°F · KSLC
Daily temperature props settle on the ACIS official station record. Inclusive and strict thresholds retain their exact meanings. Provisional observations do not replace the settlement record.
WP-KSLC-20261015-TMAX-LE53
Opened Oct 11 · 07:32 UTC
Original listing: Salt Lake City stays cold-for-here: high ≤ 53°F · Thu Oct 15
Original prop, full history & receipt ↗