NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-09 · 2026-09-11 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-11 01:31:00 EDT · Product id iem:CDUS41-KBOX-110531:BOS:2026-09-10:final · IEM archive
Product id iem:CDUS41-KBOX-110531:BOS:2026-09-10:final · iem-afos · IEM archive
SHA-256 054272ef72d864580e75d3846a85ea47c8c0dd08ecf342376c69f97aca2c68a6
Product text
CDUS41 KBOX 110531
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
131 AM EDT FRI SEP 11 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 10 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 87 323 PM 95 1931 75 12 68
MINIMUM 71 1159 PM 41 1883 60 11 57
AVERAGE 79 68 11 63
PRECIPITATION (IN)
YESTERDAY 0.01 4.71 1999 0.11 -0.10 0.00
MONTH TO DATE 0.86 1.06 -0.20 1.43
SINCE SEP 1 0.86 1.06 -0.20 1.43
SINCE JAN 1 18.42 29.10 -10.68 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 2
MONTH TO DATE 1 8 -7 10
SINCE SEP 1 1 8 -7 10
SINCE JUL 1 1 17 -16 17
COOLING
YESTERDAY 14 4 10 0
MONTH TO DATE 54 48 6 32
SINCE SEP 1 54 48 6 32
SINCE JAN 1 971 748 223 789
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 17.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76 1200 AM
LOWEST 31 400 PM
AVERAGE 54
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 99 1983
MINIMUM TEMPERATURE (F) 60 40 1917
SUNRISE AND SUNSET
SEPTEMBER 11 2026.....SUNRISE 620 AM EDT SUNSET 701 PM EDT
SEPTEMBER 12 2026.....SUNRISE 621 AM EDT SUNSET 659 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-102138:BOS:2026-09-10:interim · iem-afos · IEM archive
SHA-256 d5e2f8c92685bfb40859dc549e475ac209588bf8c40cfbd9b2720fe935bd6158
Product text
CDUS41 KBOX 102138
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
538 PM EDT THU SEP 10 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 10 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 87 323 PM 95 1931 75 12 68
MINIMUM 71 316 AM 41 1883 60 11 57
AVERAGE 79 68 11 63
PRECIPITATION (IN)
TODAY 0.01 4.71 1999 0.11 -0.10 0.00
MONTH TO DATE 0.86 1.06 -0.20 1.43
SINCE SEP 1 0.86 1.06 -0.20 1.43
SINCE JAN 1 18.42 29.10 -10.68 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 2
MONTH TO DATE 1 8 -7 10
SINCE SEP 1 1 8 -7 10
SINCE JUL 1 1 17 -16 17
COOLING
TODAY 14 4 10 0
MONTH TO DATE 54 48 6 32
SINCE SEP 1 54 48 6 32
SINCE JAN 1 971 748 223 789
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 18.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76 1200 AM
LOWEST 31 400 PM
AVERAGE 54
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 99 1983
MINIMUM TEMPERATURE (F) 60 40 1917
SUNRISE AND SUNSET
SEPTEMBER 10 2026.....SUNRISE 619 AM EDT SUNSET 703 PM EDT
SEPTEMBER 11 2026.....SUNRISE 620 AM EDT SUNSET 701 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/2026-09-10 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.