NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-10-17 · 2026-10-19 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-10-19 01:31:00 EDT · Product id iem:CDUS41-KBOX-190531:BOS:2026-10-18:final · IEM archive
Product id iem:CDUS41-KBOX-190531:BOS:2026-10-18:final · iem-afos · IEM archive
SHA-256 8b862ac8ffe1a254fb45af4b9ee312757f7115951ec63f35828ed01ed264794e
Product text
CDUS41 KBOX 190531
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
131 AM EDT MON OCT 19 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 18 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 53 337 PM 82 1947 61 -8 59
MINIMUM 37 600 AM 31 1883 47 -10 46
1939
AVERAGE 45 54 -9 53
PRECIPITATION (IN)
YESTERDAY 0.00 3.13 1932 0.14 -0.14 0.00
MONTH TO DATE 2.08 2.32 -0.24 3.27
SINCE SEP 1 7.43 5.88 1.55 6.36
SINCE JAN 1 24.99 33.92 -8.93 31.31
SNOWFALL (IN)
YESTERDAY 0.0 0.1 2009 0.0 0.0 0.0
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 20 11 9 12
MONTH TO DATE 117 152 -35 137
SINCE SEP 1 200 223 -23 169
SINCE JUL 1 200 232 -32 176
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 1 RESULTANT WIND DIRECTION S (160)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 1100 PM
LOWEST 37 1000 AM
AVERAGE 53
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 84 1945
MINIMUM TEMPERATURE (F) 46 28 1922
SUNRISE AND SUNSET
OCTOBER 19 2026.......SUNRISE 702 AM EDT SUNSET 556 PM EDT
OCTOBER 20 2026.......SUNRISE 703 AM EDT SUNSET 554 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-182123:BOS:2026-10-18:interim · iem-afos · IEM archive
SHA-256 9d2877ccff2b9077db428e3e786314c4107839164f8a4d361b28f8c9563c70f1
Product text
CDUS41 KBOX 182123
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
523 PM EDT SUN OCT 18 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 18 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 53 337 PM 82 1947 61 -8 59
MINIMUM 37 600 AM 31 1883 47 -10 46
1939
AVERAGE 45 54 -9 53
PRECIPITATION (IN)
TODAY 0.00 3.13 1932 0.14 -0.14 0.00
MONTH TO DATE 2.08 2.32 -0.24 3.27
SINCE SEP 1 7.43 5.88 1.55 6.36
SINCE JAN 1 24.99 33.92 -8.93 31.31
SNOWFALL (IN)
TODAY 0.0 0.1 2009 0.0 0.0 0.0
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 20 11 9 12
MONTH TO DATE 117 152 -35 137
SINCE SEP 1 200 223 -23 169
SINCE JUL 1 200 232 -32 176
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 9 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 4.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 59 600 AM
LOWEST 37 1000 AM
AVERAGE 48
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 84 1945
MINIMUM TEMPERATURE (F) 46 28 1922
SUNRISE AND SUNSET
OCTOBER 18 2026.......SUNRISE 701 AM EDT SUNSET 557 PM EDT
OCTOBER 19 2026.......SUNRISE 702 AM EDT SUNSET 556 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/2026-10-18 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.