NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-07 · 2026-09-09 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-09 01:28:00 EDT · Product id iem:CDUS41-KBOX-090528:BOS:2026-09-08:final · IEM archive
Product id iem:CDUS41-KBOX-090528:BOS:2026-09-08:final · iem-afos · IEM archive
SHA-256 e92d1164a6f9a17800192b85bac95c6560cd169af320feb3daf92d8b7cc2776f
Product text
CDUS41 KBOX 090528
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
128 AM EDT WED SEP 09 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 8 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 81 133 PM 96 2015 76 5 68
MINIMUM 64 1148 PM 48 1903 61 3 55
1978
AVERAGE 73 68 5 62
PRECIPITATION (IN)
YESTERDAY 0.00 1.65 2004 0.10 -0.10 0.00
MONTH TO DATE 0.83 0.84 -0.01 1.43
SINCE SEP 1 0.83 0.84 -0.01 1.43
SINCE JAN 1 18.39 28.88 -10.49 26.38
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0
2001
2002
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 3
MONTH TO DATE 1 6 -5 4
SINCE SEP 1 1 6 -5 4
SINCE JUL 1 1 15 -14 11
COOLING
YESTERDAY 8 4 4 0
MONTH TO DATE 36 40 -4 32
SINCE SEP 1 36 40 -4 32
SINCE JAN 1 953 740 213 789
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 9.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 700 PM
LOWEST 41 100 PM
AVERAGE 60
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 93 2015
2016
MINIMUM TEMPERATURE (F) 61 45 1938
SUNRISE AND SUNSET
SEPTEMBER 9 2026.....SUNRISE 618 AM EDT SUNSET 704 PM EDT
SEPTEMBER 10 2026.....SUNRISE 619 AM EDT SUNSET 703 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS41-KBOX-082350:BOS:2026-09-08:interim · iem-afos · IEM archive
SHA-256 47ede822e6e3f72200d4026c4cd9716e7aeae0a73e5502cffa1789a594e920b9
Product text
CDUS41 KBOX 082350
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
750 PM EDT TUE SEP 08 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 8 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 80 MM 96 2015 76 4 68
MINIMUM 65 MM 48 1903 61 4 55
1978
AVERAGE 73 68 5 62
PRECIPITATION (IN)
TODAY 0.00 1.65 2004 0.10 -0.10 0.00
MONTH TO DATE 0.83 0.84 -0.01 1.43
SINCE SEP 1 0.83 0.84 -0.01 1.43
SINCE JAN 1 18.39 28.88 -10.49 26.38
SNOWFALL (IN)
TODAY 0.0 0.0 2000 0.0 0.0 0.0
2001
2002
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
DEGREE DAYS
HEATING
TODAY 0 1 -1 3
MONTH TO DATE 1 6 -5 4
SINCE SEP 1 1 6 -5 4
SINCE JUL 1 1 15 -14 11
COOLING
TODAY 8 4 4 0
MONTH TO DATE 36 40 -4 32
SINCE SEP 1 36 40 -4 32
SINCE JAN 1 953 740 213 789
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 11.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 500 PM
LOWEST 41 100 PM
AVERAGE 55
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 93 2015
2016
MINIMUM TEMPERATURE (F) 61 45 1938
SUNRISE AND SUNSET
SEPTEMBER 8 2026.....SUNRISE 617 AM EDT SUNSET 706 PM EDT
SEPTEMBER 9 2026.....SUNRISE 618 AM EDT SUNSET 704 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Settlement source: the final NWS Climatological Report (CLI) for station KBOS for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KBOS/2026-09-08 with links to the NWS product and the IEM archive. A CORRECTED re-issue published before the settlement time supersedes earlier issues.
The settlement value for a date is the latest final CLI issued for that date; a corrected re-issue supersedes earlier issues. Interim same-day products never settle. This is the same rule that fills values.nwsOfficial in /api/station/{icao}/daily.
Every issue is stored verbatim as received - nothing is edited or re-derived. Products are held from 2026-09-01 (backfilled from the IEM AFOS archive) and ingested live from api.weather.gov since 2026-11-10, polled every 30 minutes. A date with no final CLI 14 hours after local midnight is reported as not_issued rather than filled in.