daily prop · Boston, MA · Northeast & Mid-Atlantic · settles Tue Oct 20

Boston high ≥ 57°F · Tue Oct 20

86¢

american -604 · decimal 1.17

on the tape

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

Canonical settlement condition: High ≥ 57°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

wn2		99¢
aifs		95¢
icon		82¢
nbm		75¢
hres		72¢
ndfd		55¢
eps		54¢

The Ladder

where the whole distribution sits

54–55°F3¢

56–57°F12¢

58–59°F26¢

60–61°F31¢

62–63°F20¢

64–65°F7¢

66–67°F1¢

calibration receipt: lead 1, scored on 14,459 settled station-days, consensus CRPS 1.516 vs climatology 8.861.

Receipts

prop id WP-KBOS-20261020-TMAX-GE57 · opened 2026-10-17T04:40:47+00:00 · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape