NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-21 · 2026-09-23 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-23 01:13:00 EDT · Product id iem:CDUS41-KBOX-230513:BOS:2026-09-22:final · IEM archive
Product id iem:CDUS41-KBOX-230513:BOS:2026-09-22:final · iem-afos · IEM archive
SHA-256 c3700cd9568e3d96ca07cfae8dac2ba053ab5b0c3b64ab1b48ef41ec09afc990
Product text
CDUS41 KBOX 230513
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
113 AM EDT WED SEP 23 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 22 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 63 MM 94 1895 71 -8 69
MINIMUM 53 MM 35 1904 56 -3 54
AVERAGE 58 64 -6 62
PRECIPITATION (IN)
YESTERDAY 0.00 1.88 1998 0.13 -0.13 0.00
MONTH TO DATE 1.81 2.54 -0.73 1.55
SINCE SEP 1 1.81 2.54 -0.73 1.55
SINCE JAN 1 19.37 30.58 -11.21 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 3 4 3
MONTH TO DATE 32 34 -2 32
SINCE SEP 1 32 34 -2 32
SINCE JUL 1 32 43 -11 39
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 77 80 -3 45
SINCE SEP 1 77 80 -3 45
SINCE JAN 1 994 780 214 802
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION NE (40)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 15.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 1100 PM
LOWEST 48 400 PM
AVERAGE 63
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 96 1895
MINIMUM TEMPERATURE (F) 56 35 1875
1904
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.
$$Product id iem:CDUS41-KBOX-222131:BOS:2026-09-22:interim · iem-afos · IEM archive
SHA-256 f702c2e8d9d903fe83c26ea81a738cfae8d5b059472bb29911bdb4a0f6f1546d
Product text
CDUS41 KBOX 222131
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
531 PM EDT TUE SEP 22 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 22 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 63 1127 AM 94 1895 71 -8 69
MINIMUM 57 323 AM 35 1904 56 1 54
AVERAGE 60 64 -4 62
PRECIPITATION (IN)
TODAY 0.00 1.88 1998 0.13 -0.13 0.00
MONTH TO DATE 1.81 2.54 -0.73 1.55
SINCE SEP 1 1.81 2.54 -0.73 1.55
SINCE JAN 1 19.37 30.58 -11.21 26.50
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 5 3 2 3
MONTH TO DATE 30 34 -4 32
SINCE SEP 1 30 34 -4 32
SINCE JUL 1 30 43 -13 39
COOLING
TODAY 0 2 -2 0
MONTH TO DATE 77 80 -3 45
SINCE SEP 1 77 80 -3 45
SINCE JAN 1 994 780 214 802
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 16.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 72 400 AM
LOWEST 48 400 PM
AVERAGE 60
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 96 1895
MINIMUM TEMPERATURE (F) 56 35 1875
1904
SUNRISE AND SUNSET
SEPTEMBER 22 2026.....SUNRISE 631 AM EDT SUNSET 641 PM EDT
SEPTEMBER 23 2026.....SUNRISE 633 AM EDT SUNSET 640 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/2026-09-22 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.