NWS CLI archive · settlement source
CLIBOS · 보스턴 · America/New_York · ← 2026-09-12 · 2026-09-14 → · All dates for KBOS · JSON · METAR-derived record
Final issued 2026-09-14 01:34:00 EDT · Product id iem:CDUS41-KBOX-140534:BOS:2026-09-13:final · IEM archive
Product id iem:CDUS41-KBOX-140534:BOS:2026-09-13:final · iem-afos · IEM archive
SHA-256 0762e5747d6f27eef00f8968a6699375fd9cbb68851b315107d8ccdb05efc3fe
Product text
CDUS41 KBOX 140534
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
134 AM EDT MON SEP 14 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 13 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 70 1024 PM 93 1957 74 -4 71
MINIMUM 63 1237 AM 45 1911 59 4 55
1985
AVERAGE 67 67 0 63
PRECIPITATION (IN)
YESTERDAY 0.84 2.30 1918 0.12 0.72 T
1987
MONTH TO DATE 1.70 1.40 0.30 1.43
SINCE SEP 1 1.70 1.40 0.30 1.43
SINCE JAN 1 19.26 29.44 -10.18 26.38
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 0 2 -2 2
MONTH TO DATE 2 12 -10 14
SINCE SEP 1 2 12 -10 14
SINCE JUL 1 2 21 -19 21
COOLING
YESTERDAY 2 3 -1 0
MONTH TO DATE 62 58 4 32
SINCE SEP 1 62 58 4 32
SINCE JAN 1 979 758 221 789
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SE (150)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 300 PM
LOWEST 75 1200 AM
AVERAGE 88
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 1915
1931
MINIMUM TEMPERATURE (F) 59 40 1884
SUNRISE AND SUNSET
SEPTEMBER 14 2026.....SUNRISE 623 AM EDT SUNSET 655 PM EDT
SEPTEMBER 15 2026.....SUNRISE 624 AM EDT SUNSET 654 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-132141:BOS:2026-09-13:interim · iem-afos · IEM archive
SHA-256 2c2e1e4a4e6bd95113b84e70382cb40a96ba93957a60f2f8d989dbee70fee66d
Product text
CDUS41 KBOX 132141
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
541 PM EDT SUN SEP 13 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 13 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 69 836 AM 93 1957 74 -5 71
MINIMUM 63 1237 AM 45 1911 59 4 55
1985
AVERAGE 66 67 -1 63
PRECIPITATION (IN)
TODAY 0.84 2.30 1918 0.12 0.72 T
1987
MONTH TO DATE 1.70 1.40 0.30 1.43
SINCE SEP 1 1.70 1.40 0.30 1.43
SINCE JAN 1 19.26 29.44 -10.18 26.38
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 0 2 -2 2
MONTH TO DATE 2 12 -10 14
SINCE SEP 1 2 12 -10 14
SINCE JUL 1 2 21 -19 21
COOLING
TODAY 1 3 -2 0
MONTH TO DATE 61 58 3 32
SINCE SEP 1 61 58 3 32
SINCE JAN 1 978 758 220 789
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 5.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 300 PM
LOWEST 75 1200 AM
AVERAGE 88
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 1915
1931
MINIMUM TEMPERATURE (F) 59 40 1884
SUNRISE AND SUNSET
SEPTEMBER 13 2026.....SUNRISE 622 AM EDT SUNSET 657 PM EDT
SEPTEMBER 14 2026.....SUNRISE 623 AM EDT SUNSET 655 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/2026-09-13 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.