NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-28 · 2026-09-30 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-30 01:33:00 EDT · Product id iem:CDUS41-KBOX-300533:BOS:2026-09-29:final · IEM archive
Product id iem:CDUS41-KBOX-300533:BOS:2026-09-29:final · iem-afos · IEM archive
SHA-256 672febc6eca8e2aaa57c3278194f0864b024e07ed48d05158236f822e6662a3c
Product text
CDUS41 KBOX 300533
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
133 AM EDT WED SEP 30 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 29 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 66 MM 88 1952 68 -2 78
MINIMUM 56 MM 34 1914 53 3 63
AVERAGE 61 61 0 71
PRECIPITATION (IN)
YESTERDAY T 2.83 1907 0.13 -0.13 0.00
MONTH TO DATE 5.34 3.43 1.91 3.09
SINCE SEP 1 5.34 3.43 1.91 3.09
SINCE JAN 1 22.90 31.47 -8.57 28.04
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 4 5 -1 0
MONTH TO DATE 81 65 16 32
SINCE SEP 1 81 65 16 32
SINCE JUL 1 81 74 7 39
COOLING
YESTERDAY 0 1 -1 6
MONTH TO DATE 77 90 -13 85
SINCE SEP 1 77 90 -13 85
SINCE JAN 1 994 790 204 842
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 7.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1000 PM
LOWEST 73 100 PM
AVERAGE 85
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 87 1986
MINIMUM TEMPERATURE (F) 53 36 1888
SUNRISE AND SUNSET
SEPTEMBER 30 2026.....SUNRISE 640 AM EDT SUNSET 627 PM EDT
OCTOBER 1 2026.......SUNRISE 641 AM EDT SUNSET 626 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-292218:BOS:2026-09-29:interim · iem-afos · IEM archive
SHA-256 f57b45a97663a48048933935b80909d1c3ee373c92f7a622d2aec52e66bfbe83
Product text
CDUS41 KBOX 292218
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
618 PM EDT TUE SEP 29 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 29 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 66 357 PM 88 1952 68 -2 78
MINIMUM 56 424 AM 34 1914 53 3 63
AVERAGE 61 61 0 71
PRECIPITATION (IN)
TODAY 0.00 2.83 1907 0.13 -0.13 0.00
MONTH TO DATE 5.34 3.43 1.91 3.09
SINCE SEP 1 5.34 3.43 1.91 3.09
SINCE JAN 1 22.90 31.47 -8.57 28.04
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 4 5 -1 0
MONTH TO DATE 81 65 16 32
SINCE SEP 1 81 65 16 32
SINCE JUL 1 81 74 7 39
COOLING
TODAY 0 1 -1 6
MONTH TO DATE 77 90 -13 85
SINCE SEP 1 77 90 -13 85
SINCE JAN 1 994 790 204 842
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 8.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 73 100 PM
AVERAGE 85
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 87 1986
MINIMUM TEMPERATURE (F) 53 36 1888
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 639 AM EDT SUNSET 629 PM EDT
SEPTEMBER 30 2026.....SUNRISE 640 AM EDT SUNSET 627 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/2026-09-29 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.