NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-10-20 · 2026-10-22 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-10-22 02:27:00 EDT · Product id iem:CDUS41-KBOX-220627:BOS:2026-10-21:final · IEM archive
Product id iem:CDUS41-KBOX-220627:BOS:2026-10-21:final · iem-afos · IEM archive
SHA-256 bed40e0b1e9fff2e1e2a6cddc2d9b308589ad09209f4978a8982b5098ef169bb
Product text
CDUS41 KBOX 220627
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
227 AM EDT THU OCT 22 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 21 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 56 1235 PM 83 2024 60 -4 67
MINIMUM 46 612 AM 30 1974 46 0 51
AVERAGE 51 53 -2 59
PRECIPITATION (IN)
YESTERDAY 0.00 1.78 1944 0.13 -0.13 0.00
1996
MONTH TO DATE 2.08 2.72 -0.64 3.89
SINCE SEP 1 7.43 6.28 1.15 6.98
SINCE JAN 1 24.99 34.32 -9.33 31.93
SNOWFALL (IN)
YESTERDAY 0.0 T 1964 0.0 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE SEP 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.1 -0.1 0.0
DEGREE DAYS
HEATING
YESTERDAY 14 12 2 6
MONTH TO DATE 160 187 -27 153
SINCE SEP 1 243 258 -15 185
SINCE JUL 1 243 267 -24 192
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 19 6 13 23
SINCE SEP 1 96 97 -1 108
SINCE JAN 1 1013 797 216 865
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 14.9
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 80 1200 AM
LOWEST 59 1200 PM
AVERAGE 70
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 83 1979
MINIMUM TEMPERATURE (F) 46 28 1940
SUNRISE AND SUNSET
OCTOBER 22 2026.......SUNRISE 705 AM EDT SUNSET 551 PM EDT
OCTOBER 23 2026.......SUNRISE 706 AM EDT SUNSET 550 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-212126:BOS:2026-10-21:interim · iem-afos · IEM archive
SHA-256 6e2d6b180cde80ab092bbb5545be723498e9b69b0c446d9d8a262d8c6322d248
Product text
CDUS41 KBOX 212126
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
526 PM EDT WED OCT 21 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 21 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 56 1235 PM 83 2024 60 -4 67
MINIMUM 46 612 AM 30 1974 46 0 51
AVERAGE 51 53 -2 59
PRECIPITATION (IN)
TODAY 0.00 1.78 1944 0.13 -0.13 0.00
1996
MONTH TO DATE 2.08 2.72 -0.64 3.89
SINCE SEP 1 7.43 6.28 1.15 6.98
SINCE JAN 1 24.99 34.32 -9.33 31.93
SNOWFALL (IN)
TODAY 0.0 T 1964 0.0 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE SEP 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.1 -0.1 0.0
DEGREE DAYS
HEATING
TODAY 14 12 2 6
MONTH TO DATE 160 187 -27 153
SINCE SEP 1 243 258 -15 185
SINCE JUL 1 243 267 -24 192
COOLING
TODAY 0 0 0 0
MONTH TO DATE 19 6 13 23
SINCE SEP 1 96 97 -1 108
SINCE JAN 1 1013 797 216 865
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 15.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 1200 AM
LOWEST 59 1200 PM
AVERAGE 70
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 83 1979
MINIMUM TEMPERATURE (F) 46 28 1940
SUNRISE AND SUNSET
OCTOBER 21 2026.......SUNRISE 704 AM EDT SUNSET 553 PM EDT
OCTOBER 22 2026.......SUNRISE 705 AM EDT SUNSET 551 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/2026-10-21 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.