Station-day record · settlement source

KBOS · 2026-09-26 - station-day record

Boston · America/New_York · ← 2026-09-25 · 2026-09-27 → · All dates for KBOS · JSON

Daily values - extremes over the METAR reports of the local day

finalsettleableanchor pending

High

16.1°C (61°F)

at 2026-09-26 00:54 EDT

METAR KBOS 260454Z 04018G28KT 10SM BKN080 OVC100 16/12 A2999 RMK AO2 PK WND 06031/0411 RAE21 SLP156 P0000 T01610117 401780100

Low

12.8°C (55°F)

at 2026-09-26 13:30 EDT

SPECI KBOS 261730Z 02022G37KT 1 1/4SM R04R/5000VP6000FT -RA BR OVC009 13/12 A2988 RMK AO2 PK WND 03037/1725 P0004 T01280122

Mean

14°C (57°F)

mean humidity 89.9%

Max wind

16.5 m/s (32.1 kt)

reports with precipitation 37 / 40

Local day 2026-09-26 00:00 EDT → 2026-09-27 00:00 EDT (24 h, UTC-04:00) · 40 reports · longest gap 60 min

NWS official daily value (CLI) - for comparison

High 61°F (16.11°C) · Low 55°F (12.78°C) · NWS CLI archive

US markets usually settle on the official NWS daily climate value (CLI), which is archived separately; the two values can differ by about a degree and are shown side by side.

Finality

final at 2026-09-27 03:00 EDT · correction hold 3 h after local midnight

longest gap 60 min · limit 90 min

1 report(s) in this day were re-issued after first publication; the original text is shown struck through in the table.

On-chain anchor (Flare SnapshotAnchor)

SHA-256 –

Final - the next hourly run writes this record's hash to SnapshotAnchor on Flare

Canonical record bytes (hash these) · SnapshotAnchor 0x2B598129… (chain 14)

Quality flags

good 40 · suspect 0 · bad 0 · High good · Low good

Flags are attached beside the anchored record and are not part of its bytes; the record's extremes are unchanged. A suspect extreme is usable but worth checking against the raw text (extremes.*.reasons); a bad report is physically impossible and excludingBad shows the extremes without it.

Every METAR in this day, as received

IEM archive · Ogimet · AWC live

Time	Type	Temp °C	Dew °C	Wind m/s	Raw report
2026-09-26 00:54 EDT	–	16.1°max	11.7°	9.3	METAR KBOS 260454Z 04018G28KT 10SM BKN080 OVC100 16/12 A2999 RMK AO2 PK WND 06031/0411 RAE21 SLP156 P0000 T01610117 401780100
2026-09-26 01:54 EDT	–	16.1°	12.2°	9.8	METAR KBOS 260554Z 04019G28KT 10SM OVC080 16/12 A2998 RMK AO2 PK WND 03028/0548 RAB40E52 SLP150 P0000 60001 T01610122 10178 20161 58022
2026-09-26 02:54 EDT	–	15°	12.2°	7.7	METAR KBOS 260654Z 04015G26KT 8SM -RA BKN060 OVC085 15/12 A2995 RMK AO2 PK WND 05030/0607 RAB0557 SLP142 P0001 T01500122
2026-09-26 03:54 EDT	–	15°	12.2°	7.7	METAR KBOS 260754Z 05015G25KT 7SM FEW020 OVC048 15/12 A2994 RMK AO2 PK WND 05029/0702 RAE52 SLP139 P0000 T01500122
2026-09-26 04:42 EDT	–	14.4°	12.8°	9.8	SPECI KBOS 260842Z 04019G27KT 4SM RA BR SCT015 BKN024 OVC047 14/13 A2993 RMK AO2 PK WND 04027/0841 RAB03 P0000 T01440128
2026-09-26 04:50 EDT	–	14°	13°	8.2	SPECI KBOS 260850Z 04016G27KT 3SM RA BR SCT016 SCT033 OVC047 14/13 A2993 RMK AO2 PK WND 04027/0841 RAB03 P0001
2026-09-26 04:54 EDT	–	13.9°	12.8°	7.7	METAR KBOS 260854Z 05015KT 3SM RA BR SCT016 SCT033 OVC045 14/13 A2993 RMK AO2 PK WND 04027/0841 RAB03 SLP134 P0002 60003 T01390128 55007
2026-09-26 05:54 EDT	–	13.9°	12.2°	8.2	METAR KBOS 260954Z 03016KT 4SM -RA BR FEW016 OVC039 14/12 A2994 RMK AO2 PK WND 05026/0922 SLP137 P0003 T01390122
2026-09-26 06:54 EDT	–	13.9°	11.7°	8.7	METAR KBOS 261054Z 02017G24KT 3SM -RA BR OVC041 14/12 A2995 RMK AO2 PK WND 02027/1017 SLP141 P0004 T01390117
2026-09-26 07:54 EDT	–	14.4°	11.1°	11.3	METAR KBOS 261154Z 02022G31KT 3SM -RA OVC038 14/11 A2994 RMK AO2 PK WND 02031/1153 RAE23B52 SLP137 P0001 60011 70012 T01440111 10161 20133 50003
2026-09-26 08:37 EDT	–	13.9°	11.7°	12.3	SPECI KBOS 261237Z 03024G35KT 2SM R04R/4500VP6000FT -RA BR FEW016 OVC032 14/12 A2992 RMK AO2 PK WND 02035/1237 P0000 T01390117
2026-09-26 08:50 EDT	–	13°	12°	11.3	SPECI KBOS 261250Z 03022G36KT 3SM -RA BR FEW018 OVC031 13/12 A2993 RMK AO2 PK WND 03036/1250 P0002
2026-09-26 08:54 EDT	–	13.3°	11.7°	13.9	METAR KBOS 261254Z 03027G37KT 3SM -RA BR FEW023 OVC031 13/12 A2993 RMK AO2 PK WND 03037/1254 SLP135 P0002 T01330117
2026-09-26 09:21 EDT	–	13.3°	11.7°	12.9	SPECI KBOS 261321Z 02025G35KT 4SM -RA BR OVC028 13/12 A2992 RMK AO2 PK WND 02039/1302 P0001 T01330117
2026-09-26 09:54 EDT	–	14.4°	11.7°	13.9	METAR KBOS 261354Z 02027G37KT 3SM -RA FEW019 OVC028 14/12 A2991 RMK AO2 PK WND 02039/1302 SLP129 P0001 T01440117
2026-09-26 10:17 EDT	–	13.9°	11.7°	14.9	SPECI KBOS 261417Z 02029G38KT 1 1/2SM R04R/4500VP6000FT RA BR FEW018 OVC028 14/12 A2992 RMK AO2 PK WND 02038/1408 P0000 T01390117
2026-09-26 10:54 EDT	–	13.9°	12.2°	12.3	METAR KBOS 261454Z 02024G40KT 1 3/4SM R04R/4000VP6000FT RA BR OVC019 14/12 A2991 RMK AO2 PK WND 03044/1424 VIS 1V3 SLP127 P0004 60007 T01390122 58008
2026-09-26 11:40 EDT	–	13.9°	11.7°	11.8	SPECI KBOS 261540Z 02023G33KT 2SM -RA BR OVC019 14/12 A2990 RMK AO2 PK WND 02036/1530 P0003 T01390117
2026-09-26 11:54 EDT	–	13.9°	11.7°	13.9	METAR KBOS 261554Z 02027G35KT 2SM -RA BR OVC020 14/12 A2989 RMK AO2 PK WND 02036/1530 SLP122 P0004 T01390117
2026-09-26 12:03 EDT	–	13.9°	12.2°	12.9	SPECI KBOS 261603Z 02025G38KT 3SM -RA BR OVC020 14/12 A2989 RMK AO2 PK WND 02038/1556 P0000 T01390122
2026-09-26 12:44 EDT	–	13.3°	12.2°	13.9	SPECI KBOS 261644Z 02027G39KT 2SM -RA BR BKN013 BKN019 OVC024 13/12 A2988 RMK AO2 PK WND 02039/1641 P0001 T01330122
2026-09-26 12:54 EDT	–	13.3°	12.2°	13.9	METAR KBOS 261654Z 02027G36KT 1 3/4SM R04R/5500VP6000FT -RA BR BKN011 BKN016 OVC023 13/12 A2988 RMK AO2 PK WND 02039/1641 SLP118 P0001 T01330122
2026-09-26 13:30 EDT	–	12.8°min	12.2°	11.3	SPECI KBOS 261730Z 02022G37KT 1 1/4SM R04R/5000VP6000FT -RA BR OVC009 13/12 A2988 RMK AO2 PK WND 03037/1725 P0004 T01280122
2026-09-26 13:54 EDT	–	12.8°	12.2°	11.3	METAR KBOS 261754Z 02022G33KT 1 1/2SM -RA BR OVC009 13/12 A2988 RMK AO2 PK WND 02038/1731 SLP118 P0006 60018 T01280122 10144 20128 55004
2026-09-26 14:24 EDT	–	13.3°	12.2°	12.9	SPECI KBOS 261824Z 02025G38KT 2SM -RA BR OVC009 13/12 A2987 RMK AO2 PK WND 03038/1822 P0002 T01330122
2026-09-26 14:54 EDT	–	13.3°	12.2°	13.9	METAR KBOS 261854Z 02027G39KT 2SM R04R/4500VP6000FT -RA BR OVC009 13/12 A2987 RMK AO2 PK WND 02039/1848 SLP113 P0005 T01330122
2026-09-26 15:54 EDT	–	13.3°	11.7°	12.9	METAR KBOS 261954Z 03025G36KT 4SM -RA BR SCT009 BKN013 OVC034 13/12 A2988 RMK AO2 PK WND 03041/1933 SLP117 P0001 T01330117
2026-09-26 16:06 EDT	–	13.3°	12.2°	11.3	SPECI KBOS 262006Z 03022G37KT 1 1/2SM R04R/4500VP6000FT -RA BR BKN009 OVC027 13/12 A2987 RMK AO2 PK WND 03037/2002 P0000 T01330122
2026-09-26 16:54 EDT	–	13.3°	12.8°	10.8	METAR KBOS 262054Z 03021G33KT 1 1/2SM R04R/6000VP6000FT -RA BR BKN009 OVC018 13/13 A2986 RMK AO2 PK WND 03037/2002 SLP112 P0005 60011 T01330128 58006
2026-09-26 17:54 EDT	–	13.9°	12.2°	14.9	METAR KBOS 262154Z 03029G43KT 1 1/2SM R04R/5500VP6000FT +RA BR BKN009 BKN016 OVC021 14/12 A2985 RMK AO2 PK WND 03047/2133 SLP107 VIS 1V2 P0008 T01390122
2026-09-26 18:54 EDT	–	13.9°	12.8°	14.9	METAR KBOS 262254Z 03029G43KT 1 1/2SM RA BR BKN009 OVC016 14/13 A2984 RMK AO2 PK WND 03044/2200 SLP104 VIS 1V2 P0026 T01390128
2026-09-26 19:11 EDT	–	13.9°	12.8°	16.5	SPECI KBOS 262311Z 03032G41KT 2 1/2SM -RA BR BKN009 BKN014 OVC027 14/13 A2983 RMK AO2 PK WND 03046/2256 VIS 2V3 P0003 T01390128
2026-09-26 19:54 EDT	METAR	14.4°	12.8°	14.9	METAR KBOS 262354Z 03029G44KT 2 1/2SM -RA BR BKN009 OVC014 14/13 A2984 RMK AO2 PK WND 03046/2256 SLP104 VIS 2V4 P0005 60050 T01440128 10144 20128 56008
2026-09-26 20:21 EDT	SPECI	14.4°	13.3°	13.4	SPECI KBOS 270021Z 04026G46KT 1 1/2SM -RA BR SCT009 OVC014 14/13 A2984 RMK AO2 PK WND 04050/2359 P0002 T01440133 $
2026-09-26 20:54 EDT	METAR	14.4°	12.8°	14.4	METAR KBOS 270054Z 04028G40KT 1 1/2SM -RA BR SCT009 OVC014 14/13 A2984 RMK AO2 PK WND 04050/2359 SLP102 P0005 T01440128 $
2026-09-26 21:54 EDT	METAR	14.4°	13.3°	12.3	METAR KBOS 270154Z 03024G38KT 2 1/2SM RA BR OVC009 14/13 A2982 RMK AO2 PK WND 05046/0143 SLP097 P0009 T01440133 $
2026-09-26 22:18 EDT	SPECI	14.4°	13.3°	11.3	SPECI KBOS 270218Z 03022G36KT 4SM -RA BR OVC009 14/13 A2983 RMK AO2 PK WND 03037/0157 P0002 T01440133 $
2026-09-26 22:54 EDT	METAR	14.4°	13.3°	12.9	METAR KBOS 270254Z COR 04025G36KT 4SM -RA BR OVC008 14/13 A2982 RMK AO2 PK WND 04038/0221 SLP098 P0002 60016 T01440133 56006 $ original: METAR KBOS 270254Z 04025G36KT 4SM BR OVC008 14/13 A2982 RMK AO2 PK WND 04038/0221 RAE54 SLP098 P0002 60016 T01440133 56006 $
2026-09-26 23:27 EDT	SPECI	14.4°	13.3°	14.4	SPECI KBOS 270327Z 04028G41KT 1 1/2SM -RA BR OVC008 14/13 A2980 RMK AO2 PK WND 04041/0325 RAB0255 P0000 T01440133 $
2026-09-26 23:54 EDT	METAR	14.4°	13.3°	12.3	METAR KBOS 270354Z 03024G39KT 1 1/2SM -RA BR OVC008 14/13 A2980 RMK AO2 PK WND 04041/0325 RAB0255 SLP090 P0003 T01440133 $

How to cite this page in market rules

Settlement source: the METAR-derived station-day record for KBOS for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KBOS/2026-09-26 with every observation used, the finality status and the Flare anchor of the record. The daily value is the extreme over the hourly and special METAR reports in that day; a short-lived peak between reports may be missed. If the record is not final and settleable by the resolution deadline, the market is flagged for review.

Station-day record: the daily extremes over every METAR observation (hourly plus special reports) received for the station's local calendar day - local midnight to local midnight, daylight saving applied. Temperatures are whole degrees Celsius as reported in METAR; a short-lived peak between reports can be missed. This is not a model or an aggregate - every value points at the report that produced it, and every report in the day is listed verbatim.

The settlement value is the daily maximum (or minimum) of this record once it is final: the local day has ended and the 3-hour correction hold has passed. A day whose longest gap between reports exceeds the station's normal interval plus 30 minutes is final but flagged not settleable - a market should treat it as a review case. Once final, the canonical record bytes are hashed (SHA-256) and the hash is written to the SnapshotAnchor contract on Flare; the anchored record is the settlement record even if reports change afterwards (matchesCurrent then reads false). US markets usually settle on the official NWS CLI value instead - see the NWS CLI archive for this station; both values are shown side by side.

Every METAR in the day is listed with its raw text; compare it with the independent archives linked under links.external (IEM ASOS archive, Ogimet).

GET links.record for the canonical record bytes, SHA-256 them and compare with anchor.sha256; call SnapshotAnchor.isAnchored(sha256) on Flare (anchor.contract, anchor.chainId) to confirm the hash is on-chain. anchor.explorer opens the anchoring transaction.

Permalink pattern for market rules: https://weathermarket.io/station/KBOS/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KBOS/YYYY-MM-DD (JSON).