NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-26 · 2026-09-28 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-28 01:26:00 EDT · Product id iem:CDUS41-KBOX-280526:BOS:2026-09-27:final · IEM archive
Product id iem:CDUS41-KBOX-280526:BOS:2026-09-27:final · iem-afos · IEM archive
SHA-256 fbf9421c0abae1be77275cd84ab7f62d69c439160ab2a0ac58e6b31c025e53c2
Product text
CDUS41 KBOX 280526
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
126 AM EDT MON SEP 28 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 27 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 60 659 PM 86 1933 69 -9 76
1998
2017
MINIMUM 56 1159 PM 37 1947 54 2 64
AVERAGE 58 62 -4 70
PRECIPITATION (IN)
YESTERDAY 1.50 2.37 1962 0.13 1.37 0.00
MONTH TO DATE 4.34 3.17 1.17 3.08
SINCE SEP 1 4.34 3.17 1.17 3.08
SINCE JAN 1 21.90 31.21 -9.31 28.03
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 5 2 0
MONTH TO DATE 69 55 14 32
SINCE SEP 1 69 55 14 32
SINCE JUL 1 69 64 5 39
COOLING
YESTERDAY 0 1 -1 5
MONTH TO DATE 77 88 -11 69
SINCE SEP 1 77 88 -11 69
SINCE JAN 1 994 788 206 826
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 25 RESULTANT WIND DIRECTION NE (30)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 25.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 100 AM
LOWEST 93 1200 AM
AVERAGE 95
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 90 1873
1881
MINIMUM TEMPERATURE (F) 54 37 1947
SUNRISE AND SUNSET
SEPTEMBER 28 2026.....SUNRISE 638 AM EDT SUNSET 631 PM EDT
SEPTEMBER 29 2026.....SUNRISE 639 AM EDT SUNSET 629 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-272142:BOS:2026-09-27:interim · iem-afos · IEM archive
SHA-256 794af39861887e7900375f7672abf41a5a03afa0a765a477b3b62427858f916a
Product text
CDUS41 KBOX 272142
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
542 PM EDT SUN SEP 27 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 27 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 60 359 PM 86 1933 69 -9 76
1998
2017
MINIMUM 58 718 AM 37 1947 54 4 64
AVERAGE 59 62 -3 70
PRECIPITATION (IN)
TODAY 1.31 2.37 1962 0.13 1.18 0.00
MONTH TO DATE 4.15 3.17 0.98 3.08
SINCE SEP 1 4.15 3.17 0.98 3.08
SINCE JAN 1 21.71 31.21 -9.50 28.03
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 6 5 1 0
MONTH TO DATE 68 55 13 32
SINCE SEP 1 68 55 13 32
SINCE JUL 1 68 64 4 39
COOLING
TODAY 0 1 -1 5
MONTH TO DATE 77 88 -11 69
SINCE SEP 1 77 88 -11 69
SINCE JAN 1 994 788 206 826
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 26.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 100 AM
LOWEST 93 1200 AM
AVERAGE 95
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 90 1873
1881
MINIMUM TEMPERATURE (F) 54 37 1947
SUNRISE AND SUNSET
SEPTEMBER 27 2026.....SUNRISE 637 AM EDT SUNSET 633 PM EDT
SEPTEMBER 28 2026.....SUNRISE 638 AM EDT SUNSET 631 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/2026-09-27 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.