NWS CLI archive · settlement source
KBOS · 2026-09-19 - NWS CLI
CLIBOS · 보스턴 · America/New_York · ← 2026-09-18 · 2026-09-20 → · All dates for KBOS · JSON · METAR-derived record
Settlement value - latest final issue
finalHigh
62°F (16.67°C)
Low
54°F (12.22°C)
Precip
0 in (0 mm)
Final issued 2026-09-20 06:22:00 EDT · Product id iem:CDUS41-KBOX-201022:BOS:2026-09-19:final · IEM archive
Every issue for this date, as received
final2026-09-20 06:22:00 EDT · KBOX · CDUS41 KBOX 201022 · 62°F / 54°F / 0 in
Product id iem:CDUS41-KBOX-201022:BOS:2026-09-19:final · iem-afos · IEM archive
SHA-256 ed288b9a3ef7edaec2c4419f1f0e834ee4bf07e3d82303191b1198d40db32ac4
Product text
CDUS41 KBOX 201022
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
622 AM EDT SUN SEP 20 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 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 62 215 PM 92 1983 72 -10 82
MINIMUM 54 1031 PM 42 1929 57 -3 61
AVERAGE 58 65 -7 72
PRECIPITATION (IN)
YESTERDAY 0.00 1.21 1936 0.12 -0.12 0.00
MONTH TO DATE 1.70 2.15 -0.45 1.55
SINCE SEP 1 1.70 2.15 -0.45 1.55
SINCE JAN 1 19.26 30.19 -10.93 26.50
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 3 4 0
MONTH TO DATE 14 25 -11 18
SINCE SEP 1 14 25 -11 18
SINCE JUL 1 14 34 -20 25
COOLING
YESTERDAY 0 2 -2 7
MONTH TO DATE 77 74 3 45
SINCE SEP 1 77 74 3 45
SINCE JAN 1 994 774 220 802
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 8.0
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 72 900 PM
LOWEST 48 1200 AM
AVERAGE 60
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 97 1983
MINIMUM TEMPERATURE (F) 57 42 1929
1964
1979
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 629 AM EDT SUNSET 645 PM EDT
SEPTEMBER 21 2026.....SUNRISE 630 AM EDT SUNSET 643 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$interim 0500 PM2026-09-19 17:37:00 EDT · KBOX · CDUS41 KBOX 192137 · 62°F / 55°F / 0 in
Product id iem:CDUS41-KBOX-192137:BOS:2026-09-19:interim · iem-afos · IEM archive
SHA-256 d96aade7796237ed84172c822998ecca06035ff2880d3d4e0c3ded0a882e19f5
Product text
CDUS41 KBOX 192137
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
537 PM EDT SAT SEP 19 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 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 62 215 PM 92 1983 72 -10 82
MINIMUM 55 626 AM 42 1929 57 -2 61
AVERAGE 59 65 -6 72
PRECIPITATION (IN)
TODAY 0.00 1.21 1936 0.12 -0.12 0.00
MONTH TO DATE 1.70 2.15 -0.45 1.55
SINCE SEP 1 1.70 2.15 -0.45 1.55
SINCE JAN 1 19.26 30.19 -10.93 26.50
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 3 3 0
MONTH TO DATE 13 25 -12 18
SINCE SEP 1 13 25 -12 18
SINCE JUL 1 13 34 -21 25
COOLING
TODAY 0 2 -2 7
MONTH TO DATE 77 74 3 45
SINCE SEP 1 77 74 3 45
SINCE JAN 1 994 774 220 802
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 9.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62 500 AM
LOWEST 48 1200 AM
AVERAGE 55
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 97 1983
MINIMUM TEMPERATURE (F) 57 42 1929
1964
1979
SUNRISE AND SUNSET
SEPTEMBER 19 2026.....SUNRISE 628 AM EDT SUNSET 647 PM EDT
SEPTEMBER 20 2026.....SUNRISE 629 AM EDT SUNSET 645 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$How to cite this page in market rules
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/2026-09-19 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.