NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-10-19 · 2026-10-21 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-10-21 02:37:00 EDT · Product id iem:CDUS41-KBOX-210637:BOS:2026-10-20:final · IEM archive
Product id iem:CDUS41-KBOX-210637:BOS:2026-10-20:final · iem-afos · IEM archive
SHA-256 923c0df0200a8a1dc24fd5ab2649df4ed743214b2a6c4b4d3d660b11b720d23d
Product text
CDUS41 KBOX 210637
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
237 AM EDT WED OCT 21 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 20 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 62 149 PM 79 1969 61 1 67
MINIMUM 44 535 AM 32 1900 46 -2 54
1972
1974
AVERAGE 53 53 0 61
PRECIPITATION (IN)
YESTERDAY 0.00 6.11 1996 0.14 -0.14 0.62
MONTH TO DATE 2.08 2.59 -0.51 3.89
SINCE SEP 1 7.43 6.15 1.28 6.98
SINCE JAN 1 24.99 34.19 -9.20 31.93
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2007 0.1 -0.1 0.0
2008
2009
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 12 12 0 4
MONTH TO DATE 146 175 -29 147
SINCE SEP 1 229 246 -17 179
SINCE JUL 1 229 255 -26 186
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 10 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 10.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 100 AM
LOWEST 48 100 PM
AVERAGE 71
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 83 2024
MINIMUM TEMPERATURE (F) 46 30 1974
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.
$$Product id iem:CDUS41-KBOX-202141:BOS:2026-10-20:interim · iem-afos · IEM archive
SHA-256 6d8d1133cb305920f3033984583e0f9ef12187fe29dd7ae46b0e900a129241c5
Product text
CDUS41 KBOX 202141
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
541 PM EDT TUE OCT 20 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 20 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 62 149 PM 79 1969 61 1 67
MINIMUM 44 535 AM 32 1900 46 -2 54
1972
1974
AVERAGE 53 53 0 61
PRECIPITATION (IN)
TODAY 0.00 6.11 1996 0.14 -0.14 0.62
MONTH TO DATE 2.08 2.59 -0.51 3.89
SINCE SEP 1 7.43 6.15 1.28 6.98
SINCE JAN 1 24.99 34.19 -9.20 31.93
SNOWFALL (IN)
TODAY 0.0 0.0 2007 0.1 -0.1 0.0
2008
2009
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 12 12 0 4
MONTH TO DATE 146 175 -29 147
SINCE SEP 1 229 246 -17 179
SINCE JUL 1 229 255 -26 186
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 24 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 11.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 100 AM
LOWEST 48 100 PM
AVERAGE 71
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 83 2024
MINIMUM TEMPERATURE (F) 46 30 1974
SUNRISE AND SUNSET
OCTOBER 20 2026.......SUNRISE 703 AM EDT SUNSET 554 PM EDT
OCTOBER 21 2026.......SUNRISE 704 AM EDT SUNSET 553 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/2026-10-20 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.