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daily prop · Boston, MA · Northeast & Mid-Atlantic · settles Wed Oct 21

Boston stays cold-for-here: high ≤ 51°F · Wed Oct 21

7¢
american +1397 · decimal 14.97
on the tape
51°F is the bottom-decile high for this date at this station (1940–present).
Canonical settlement condition: High ≤ 51°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¢10/0610/1710/19 11:20
— — 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
rrfs
29¢
hres
25¢
icon
18¢
ndfd
15¢
nbm
12¢
eps
12¢
aifs
8¢
wn2
1¢

The Ladder

where the whole distribution sits
48–49°F1¢
50–51°F6¢
52–53°F17¢
54–55°F28¢
56–57°F28¢
58–59°F15¢
60–61°F5¢
62–63°F1¢
calibration receipt: lead 2, scored on 14,410 settled station-days, consensus CRPS 1.692 vs climatology 8.861.

Receipts

prop id WP-KBOS-20261021-TMAX-LE51 · opened 2026-10-17T07:43:51+00:00 · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape