NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-22 · 2026-09-24 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-24 01:25:00 EDT · Product id iem:CDUS41-KBOX-240525:BOS:2026-09-23:final · IEM archive
Product id iem:CDUS41-KBOX-240525:BOS:2026-09-23:final · iem-afos · IEM archive
SHA-256 fd33ef7d0ae58c039f11e9e29209c502347a9d616dbe14ac0b982894ad290fcf
Product text
CDUS41 KBOX 240525
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
125 AM EDT THU SEP 24 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 23 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 64 105 PM 96 1895 71 -7 80
MINIMUM 51 433 AM 35 1875 56 -5 60
1904
AVERAGE 58 63 -5 70
PRECIPITATION (IN)
YESTERDAY 0.00 2.64 1994 0.12 -0.12 0.00
MONTH TO DATE 1.81 2.66 -0.85 1.55
SINCE SEP 1 1.81 2.66 -0.85 1.55
SINCE JAN 1 19.37 30.70 -11.33 26.50
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 7 4 3 0
MONTH TO DATE 39 38 1 32
SINCE SEP 1 39 38 1 32
SINCE JUL 1 39 47 -8 39
COOLING
YESTERDAY 0 2 -2 5
MONTH TO DATE 77 82 -5 50
SINCE SEP 1 77 82 -5 50
SINCE JAN 1 994 782 212 807
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 15 RESULTANT WIND DIRECTION NE (40)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 16.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 400 AM
LOWEST 54 1100 AM
AVERAGE 70
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 90 1959
MINIMUM TEMPERATURE (F) 55 39 1885
1963
1974
SUNRISE AND SUNSET
SEPTEMBER 24 2026.....SUNRISE 634 AM EDT SUNSET 638 PM EDT
SEPTEMBER 25 2026.....SUNRISE 635 AM EDT SUNSET 636 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-232129:BOS:2026-09-23:interim · iem-afos · IEM archive
SHA-256 ee0f9335705475be0bef2ec8d6477fc7c25446ab35da95d60702b16203ebc8da
Product text
CDUS41 KBOX 232129
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
529 PM EDT WED SEP 23 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 23 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 64 105 PM 96 1895 71 -7 80
MINIMUM 51 433 AM 35 1875 56 -5 60
1904
AVERAGE 58 63 -5 70
PRECIPITATION (IN)
TODAY 0.00 2.64 1994 0.12 -0.12 0.00
MONTH TO DATE 1.81 2.66 -0.85 1.55
SINCE SEP 1 1.81 2.66 -0.85 1.55
SINCE JAN 1 19.37 30.70 -11.33 26.50
SNOWFALL (IN)
TODAY MM 0.0 2000 0.0 MM 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 7 4 3 0
MONTH TO DATE 39 38 1 32
SINCE SEP 1 39 38 1 32
SINCE JUL 1 39 47 -8 39
COOLING
TODAY 0 2 -2 5
MONTH TO DATE 77 82 -5 50
SINCE SEP 1 77 82 -5 50
SINCE JAN 1 994 782 212 807
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 16.2
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 86 400 AM
LOWEST 54 1100 AM
AVERAGE 70
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 90 1959
MINIMUM TEMPERATURE (F) 55 39 1885
1963
1974
SUNRISE AND SUNSET
SEPTEMBER 23 2026.....SUNRISE 633 AM EDT SUNSET 640 PM EDT
SEPTEMBER 24 2026.....SUNRISE 634 AM EDT SUNSET 638 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/2026-09-23 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.