Chicago, ILHigh ≥ 60°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 EXECUTED100 contracts at the midpoint of these model probabilities. Each contract pays 1u to the winning side.
AIFS +17.90u · HRES −17.90u
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 ↓ |
|---|---|---|---|---|---|
| AIFS Single | 93% | 67.5°F | 5.3°F | 2026-10-12 06:00 | Pending |
| WeatherNext 2 | 92% | 66.0°F | 4.6°F | 2026-10-12 00:00 | Pending |
| IFS Ensemble | 83% | 63.2°F | 3.9°F | 2026-10-12 00:00 | Pending |
| ICON | 80% | 65.4°F | 7.0°F | 2026-10-12 00:00 | Pending |
| National Blend | 74% | 63.0°F | 5.5°F | 2026-10-12 06:00 | Pending |
| IFS HRES | 71% | 63.1°F | 6.6°F | 2026-10-12 00:00 | Pending |
| NWS forecast | 53% | 60.0°F | 5.8°F | 2026-10-12 02:00 | Pending |
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 ≥ 60°F · KORD
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-KORD-20261018-TMAX-GE60
Opened Oct 12 · 04:01 UTC
Original listing: Chicago high ≥ 60°F · Sun Oct 18
Original prop, full history & receipt ↗