NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-03 · 2026-09-05 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-05 01:27:00 EDT · Product id iem:CDUS41-KBOX-050527:BOS:2026-09-04:final · IEM archive
Product id iem:CDUS41-KBOX-050527:BOS:2026-09-04:final · iem-afos · IEM archive
SHA-256 089716ef4cb1950082cc406c9955aa05fe88a7c02fbe4053b30ebffd07afbad0
Product text
CDUS41 KBOX 050527
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
127 AM EDT SAT SEP 05 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 4 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 85 1247 PM 94 1884 77 8 79
1973
MINIMUM 66 640 AM 43 1872 62 4 58
AVERAGE 76 69 7 69
PRECIPITATION (IN)
YESTERDAY 0.00 1.73 1905 0.11 -0.11 0.00
MONTH TO DATE 0.72 0.43 0.29 0.00
SINCE SEP 1 0.72 0.43 0.29 0.00
SINCE JAN 1 18.28 28.47 -10.19 24.95
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 0
MONTH TO DATE 0 2 -2 0
SINCE SEP 1 0 2 -2 0
SINCE JUL 1 0 11 -11 7
COOLING
YESTERDAY 11 5 6 4
MONTH TO DATE 18 22 -4 10
SINCE SEP 1 18 22 -4 10
SINCE JAN 1 935 722 213 767
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 6.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 300 AM
LOWEST 54 900 PM
AVERAGE 77
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 93 1880
MINIMUM TEMPERATURE (F) 62 48 1872
1896
SUNRISE AND SUNSET
SEPTEMBER 5 2026.....SUNRISE 614 AM EDT SUNSET 711 PM EDT
SEPTEMBER 6 2026.....SUNRISE 615 AM EDT SUNSET 709 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-042154:BOS:2026-09-04:interim · iem-afos · IEM archive
SHA-256 9d4dbf5d8db709a9685f7711fed750c37c1edc393401549dba525c8a766bdfb3
Product text
CDUS41 KBOX 042154
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
554 PM EDT FRI SEP 04 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 4 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 85 1247 PM 94 1884 77 8 79
1973
MINIMUM 66 640 AM 43 1872 62 4 58
AVERAGE 76 69 7 69
PRECIPITATION (IN)
TODAY 0.00 1.73 1905 0.11 -0.11 0.00
MONTH TO DATE 0.72 0.43 0.29 0.00
SINCE SEP 1 0.72 0.43 0.29 0.00
SINCE JAN 1 18.28 28.47 -10.19 24.95
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 0
MONTH TO DATE 0 2 -2 0
SINCE SEP 1 0 2 -2 0
SINCE JUL 1 0 11 -11 7
COOLING
TODAY 11 5 6 4
MONTH TO DATE 18 22 -4 10
SINCE SEP 1 18 22 -4 10
SINCE JAN 1 935 722 213 767
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 300 AM
LOWEST 58 1000 AM
AVERAGE 79
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 93 1880
MINIMUM TEMPERATURE (F) 62 48 1872
1896
SUNRISE AND SUNSET
SEPTEMBER 4 2026.....SUNRISE 612 AM EDT SUNSET 713 PM EDT
SEPTEMBER 5 2026.....SUNRISE 614 AM EDT SUNSET 711 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/2026-09-04 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.