NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-10-18 · 2026-10-20 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-10-20 02:21:00 EDT · Product id iem:CDUS41-KBOX-200621:BOS:2026-10-19:final · IEM archive
Product id iem:CDUS41-KBOX-200621:BOS:2026-10-19:final · iem-afos · IEM archive
SHA-256 5645fc39bde6005ed0c92968b55b01510941dc31d21815387d208ec0dc47b963
Product text
CDUS41 KBOX 200621
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
221 AM EDT TUE OCT 20 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 19 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 56 153 PM 84 1945 61 -5 68
MINIMUM 40 628 AM 28 1922 46 -6 49
AVERAGE 48 54 -6 59
PRECIPITATION (IN)
YESTERDAY 0.00 2.06 1932 0.13 -0.13 0.00
MONTH TO DATE 2.08 2.45 -0.37 3.27
SINCE SEP 1 7.43 6.01 1.42 6.36
SINCE JAN 1 24.99 34.05 -9.06 31.31
SNOWFALL (IN)
YESTERDAY 0.0 T 1972 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 17 11 6 6
MONTH TO DATE 134 163 -29 143
SINCE SEP 1 217 234 -17 175
SINCE JUL 1 217 243 -26 182
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 3 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 5.2
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 83 900 PM
LOWEST 59 1000 AM
AVERAGE 71
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 79 1969
MINIMUM TEMPERATURE (F) 46 32 1900
1972
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.
$$Product id iem:CDUS41-KBOX-192124:BOS:2026-10-19:interim · iem-afos · IEM archive
SHA-256 d028a9db71c87da5b53ac5af7f5b9edddbb73f0ee6a5f2980325bab2ed8dcc14
Product text
CDUS41 KBOX 192124
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
524 PM EDT MON OCT 19 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 19 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 56 153 PM 84 1945 61 -5 68
MINIMUM 40 628 AM 28 1922 46 -6 49
AVERAGE 48 54 -6 59
PRECIPITATION (IN)
TODAY 0.00 2.06 1932 0.13 -0.13 0.00
MONTH TO DATE 2.08 2.45 -0.37 3.27
SINCE SEP 1 7.43 6.01 1.42 6.36
SINCE JAN 1 24.99 34.05 -9.06 31.31
SNOWFALL (IN)
TODAY 0.0 T 1972 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 17 11 6 6
MONTH TO DATE 134 163 -29 143
SINCE SEP 1 217 234 -17 175
SINCE JUL 1 217 243 -26 182
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 10 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 5.0
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 82 700 AM
LOWEST 59 1000 AM
AVERAGE 71
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 79 1969
MINIMUM TEMPERATURE (F) 46 32 1900
1972
1974
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.
$$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/2026-10-19 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.