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climate prop · Boston, MA · Northeast & Mid-Atlantic · settles 2026-09

Top-5 warmest Sep on record in Boston

NO
settled · observed 70.63
on the tape
Needs a mean high of 74.3°F+ against 86 years of record (warmest: 76.0°F in 2015). Site climate series.

The Tape

what the models knew, when
0¢25¢50¢75¢100¢09/0709/1109/30 23:24
— — 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.

Receipts

prop id WP-KBOS-2026-09-MAVG-TOP5 · opened 2026-09-07T14:03:21+00:00 · settled 2026-10-02T11:39:39+00:00 against ACIS official NWS record (period-of-record climatology) · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape