daily prop · Chicago, IL · Great Lakes & Upper Midwest · settles Sat Oct 17

Chicago high ≥ 59°F · Sat Oct 17

settled · observed 57

on the tape

The line is the official NWS forecast at open. Settles on the ACIS official NWS daily record.

Canonical settlement condition: High ≥ 59°F. The original listing above is retained as published. Open the model matchup dashboard →

The Tape

what the models knew, when

— — reconstructed from archived model runs (deterministic values + a lead-dependent Gaussian error model, labeled, never on the tape) · — live prices from the running consensus engine.

Who's Bullish

each model's own price

eps		77¢
ndfd		59¢
wn2		54¢
aifs		48¢
hres		30¢
nbm		23¢
rrfs		18¢
icon		12¢
hrrr		3¢

Receipts

prop id WP-KORD-20261017-TMAX-GE59 · opened 2026-10-13T04:15:52+00:00 · settled 2026-10-18T14:08:29+00:00 against ACIS official NWS daily record · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape