NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-15 · 2026-09-17 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-17 04:26:00 EDT · Product id iem:CDUS41-KBOX-170826:BOS:2026-09-16:final · IEM archive
Product id iem:CDUS41-KBOX-170826:BOS:2026-09-16:final · iem-afos · IEM archive
SHA-256 b02ba266a0e073274b2cf9c1a2c9d70e002fdfd9a13930bd4bde007e215af05c
Product text
CDUS41 KBOX 170826
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
426 AM EDT THU SEP 17 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 16 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 80 327 PM 96 1939 73 7 68
MINIMUM 56 336 AM 42 1984 58 -2 57
AVERAGE 68 66 2 63
PRECIPITATION (IN)
YESTERDAY 0.00 5.63 1933 0.13 -0.13 0.00
MONTH TO DATE 1.70 1.77 -0.07 1.43
SINCE SEP 1 1.70 1.77 -0.07 1.43
SINCE JAN 1 19.26 29.81 -10.55 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 2 -2 2
MONTH TO DATE 7 18 -11 16
SINCE SEP 1 7 18 -11 16
SINCE JUL 1 7 27 -20 23
COOLING
YESTERDAY 3 3 0 0
MONTH TO DATE 66 67 -1 35
SINCE SEP 1 66 67 -1 35
SINCE JAN 1 983 767 216 792
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 8.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 400 AM
LOWEST 48 100 PM
AVERAGE 69
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 1915
MINIMUM TEMPERATURE (F) 58 44 2013
SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE 626 AM EDT SUNSET 650 PM EDT
SEPTEMBER 18 2026.....SUNRISE 627 AM EDT SUNSET 648 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-162130:BOS:2026-09-16:interim · iem-afos · IEM archive
SHA-256 3c20a7259b4b1323871d36eeb2e29325f8ac0d55009c1496c669bd3c6bd139d1
Product text
CDUS41 KBOX 162130
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
530 PM EDT WED SEP 16 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 16 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 80 327 PM 96 1939 73 7 68
MINIMUM 56 336 AM 42 1984 58 -2 57
AVERAGE 68 66 2 63
PRECIPITATION (IN)
TODAY 0.00 5.63 1933 0.13 -0.13 0.00
MONTH TO DATE 1.70 1.77 -0.07 1.43
SINCE SEP 1 1.70 1.77 -0.07 1.43
SINCE JAN 1 19.26 29.81 -10.55 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 2 -2 2
MONTH TO DATE 7 18 -11 16
SINCE SEP 1 7 18 -11 16
SINCE JUL 1 7 27 -20 23
COOLING
TODAY 3 3 0 0
MONTH TO DATE 66 67 -1 35
SINCE SEP 1 66 67 -1 35
SINCE JAN 1 983 767 216 792
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 8.1
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 89 400 AM
LOWEST 48 100 PM
AVERAGE 69
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 1915
MINIMUM TEMPERATURE (F) 58 44 2013
SUNRISE AND SUNSET
SEPTEMBER 16 2026.....SUNRISE 625 AM EDT SUNSET 652 PM EDT
SEPTEMBER 17 2026.....SUNRISE 626 AM EDT SUNSET 650 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/2026-09-16 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.