NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-24 · 2026-09-26 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-26 01:40:00 EDT · Product id iem:CDUS41-KBOX-260540:BOS:2026-09-25:final · IEM archive
Product id iem:CDUS41-KBOX-260540:BOS:2026-09-25:final · iem-afos · IEM archive
SHA-256 da7ac8de721274340ebf7f0e03e74b6871e8afad45ad239495b13eb4661e5aed
Product text
CDUS41 KBOX 260540
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
140 AM EDT SAT SEP 26 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 25 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 64 958 PM 89 1926 70 -6 72
MINIMUM 50 324 AM 38 1950 55 -5 63
AVERAGE 57 62 -5 68
PRECIPITATION (IN)
YESTERDAY 0.01 2.90 1961 0.13 -0.12 1.42
MONTH TO DATE 1.82 2.92 -1.10 3.08
SINCE SEP 1 1.82 2.92 -1.10 3.08
SINCE JAN 1 19.38 30.96 -11.58 28.03
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 8 4 4 0
MONTH TO DATE 55 46 9 32
SINCE SEP 1 55 46 9 32
SINCE JUL 1 55 55 0 39
COOLING
YESTERDAY 0 2 -2 3
MONTH TO DATE 77 86 -9 53
SINCE SEP 1 77 86 -9 53
SINCE JAN 1 994 786 208 810
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 17.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 200 AM
LOWEST 50 500 PM
AVERAGE 67
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 95 1881
MINIMUM TEMPERATURE (F) 55 34 1879
SUNRISE AND SUNSET
SEPTEMBER 26 2026.....SUNRISE 636 AM EDT SUNSET 634 PM EDT
SEPTEMBER 27 2026.....SUNRISE 637 AM EDT SUNSET 633 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-252131:BOS:2026-09-25:interim · iem-afos · IEM archive
SHA-256 48931cb8565ebace99591f277dff1d13db0a10659646b5068454f9674be31ac6
Product text
CDUS41 KBOX 252131
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
531 PM EDT FRI SEP 25 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 25 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 64 308 PM 89 1926 70 -6 72
MINIMUM 50 324 AM 38 1950 55 -5 63
AVERAGE 57 62 -5 68
PRECIPITATION (IN)
TODAY 0.00 2.90 1961 0.13 -0.13 1.42
MONTH TO DATE 1.81 2.92 -1.11 3.08
SINCE SEP 1 1.81 2.92 -1.11 3.08
SINCE JAN 1 19.37 30.96 -11.59 28.03
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 8 4 4 0
MONTH TO DATE 55 46 9 32
SINCE SEP 1 55 46 9 32
SINCE JUL 1 55 55 0 39
COOLING
TODAY 0 2 -2 3
MONTH TO DATE 77 86 -9 53
SINCE SEP 1 77 86 -9 53
SINCE JAN 1 994 786 208 810
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 16.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 200 AM
LOWEST 54 200 PM
AVERAGE 69
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 95 1881
MINIMUM TEMPERATURE (F) 55 34 1879
SUNRISE AND SUNSET
SEPTEMBER 25 2026.....SUNRISE 635 AM EDT SUNSET 636 PM EDT
SEPTEMBER 26 2026.....SUNRISE 636 AM EDT SUNSET 634 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/2026-09-25 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.