NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-08 · 2026-09-10 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-10 01:29:00 EDT · Product id iem:CDUS41-KBOX-100529:BOS:2026-09-09:final · IEM archive
Product id iem:CDUS41-KBOX-100529:BOS:2026-09-09:final · iem-afos · IEM archive
SHA-256 9e1644f8046812a13cfd81b4b9ab78f07de08b91175de56e0cbc164d19de853a
Product text
CDUS41 KBOX 100529
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
129 AM EDT THU SEP 10 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 9 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 76 441 PM 93 2015 76 0 69
2016
MINIMUM 61 720 AM 45 1938 61 0 53
AVERAGE 69 68 1 61
PRECIPITATION (IN)
YESTERDAY 0.02 2.19 1969 0.11 -0.09 0.00
MONTH TO DATE 0.85 0.95 -0.10 1.43
SINCE SEP 1 0.85 0.95 -0.10 1.43
SINCE JAN 1 18.41 28.99 -10.58 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 4
MONTH TO DATE 1 7 -6 8
SINCE SEP 1 1 7 -6 8
SINCE JUL 1 1 16 -15 15
COOLING
YESTERDAY 4 4 0 0
MONTH TO DATE 40 44 -4 32
SINCE SEP 1 40 44 -4 32
SINCE JAN 1 957 744 213 789
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 9.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 700 PM
LOWEST 69 400 PM
AVERAGE 80
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 95 1931
MINIMUM TEMPERATURE (F) 60 41 1883
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.
$$Product id iem:CDUS41-KBOX-092151:BOS:2026-09-09:interim · iem-afos · IEM archive
SHA-256 b29ec45c182896cf2ad45bfe8dc73d7e810af7db3fec7adff8b8366c406f8536
Product text
CDUS41 KBOX 092151
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
551 PM EDT WED SEP 09 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 9 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 76 346 PM 93 2015 76 0 69
2016
MINIMUM 61 720 AM 45 1938 61 0 53
AVERAGE 69 68 1 61
PRECIPITATION (IN)
TODAY 0.00 2.19 1969 0.11 -0.11 0.00
MONTH TO DATE 0.83 0.95 -0.12 1.43
SINCE SEP 1 0.83 0.95 -0.12 1.43
SINCE JAN 1 18.39 28.99 -10.60 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 4
MONTH TO DATE 1 7 -6 8
SINCE SEP 1 1 7 -6 8
SINCE JUL 1 1 16 -15 15
COOLING
TODAY 4 4 0 0
MONTH TO DATE 40 44 -4 32
SINCE SEP 1 40 44 -4 32
SINCE JAN 1 957 744 213 789
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 6.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 200 PM
LOWEST 69 400 PM
AVERAGE 77
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 95 1931
MINIMUM TEMPERATURE (F) 60 41 1883
SUNRISE AND SUNSET
SEPTEMBER 9 2026.....SUNRISE 618 AM EDT SUNSET 704 PM EDT
SEPTEMBER 10 2026.....SUNRISE 619 AM EDT SUNSET 703 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/2026-09-09 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.