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daily prop · Chicago, IL · Great Lakes & Upper Midwest · settles Sun Oct 18

Chicago high ≥ 64°F · Sun Oct 18

41¢
american +142 · decimal 2.42
on the tape
The line is the official NWS forecast at open. Settles on the ACIS official NWS daily record.
Canonical settlement condition: High ≥ 64°F. The original listing above is retained as published. Open the model matchup dashboard →

The Tape

what the models knew, when
0¢25¢50¢75¢100¢10/0310/1310/18 18:00
— — 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
ndfd
59¢
aifs
59¢
eps
58¢
wn2
56¢
nbm
41¢
hres
25¢
rrfs
19¢
icon
5¢

The Ladder

where the whole distribution sits
56–57°F1¢
58–59°F4¢
60–61°F13¢
62–63°F25¢
64–65°F28¢
66–67°F19¢
68–69°F8¢
70–71°F2¢
calibration receipt: lead 3, scored on 14,153 settled station-days, consensus CRPS 1.905 vs climatology 8.883.

Receipts

prop id WP-KORD-20261018-TMAX-GE64 · opened 2026-10-12T15:27:06+00:00 · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape