NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-09-04 · 2026-09-06 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-09-06 04:29:00 EDT · Product id iem:CDUS46-KSEW-060829:SEA:2026-09-05:final · IEM archive
Product id iem:CDUS46-KSEW-060829:SEA:2026-09-05:final · iem-afos · IEM archive
SHA-256 7b462809c12be3923b5156eb8737214a7f51409f806cc289403ad3186af35338
Product text
CDUS46 KSEW 060829
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
129 AM PDT SUN SEP 06 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 5 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 70 514 PM 90 2024 75 -5 77
MINIMUM 52 417 AM 42 1947 55 -3 58
AVERAGE 61 65 -4 68
PRECIPITATION (IN)
YESTERDAY 0.00 1.09 2013 0.04 -0.04 0.00
MONTH TO DATE 0.36 0.21 0.15 0.00
SINCE OCT 1 37.27 37.94 -0.67 28.91
SINCE JAN 1 20.49 22.00 -1.51 15.51
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 4 2 2 0
MONTH TO DATE 16 10 6 0
SINCE SEP 1 16 10 6 0
SINCE JUL 1 41 65 -24 24
COOLING
YESTERDAY 0 2 -2 3
MONTH TO DATE 0 10 -10 18
SINCE SEP 1 0 10 -10 18
SINCE JAN 1 265 243 22 312
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 4.0
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 200 AM
LOWEST 52 700 PM
AVERAGE 71
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 90 2014
MINIMUM TEMPERATURE (F) 55 44 1947
SUNRISE AND SUNSET
SEPTEMBER 6 2026.....SUNRISE 635 AM PDT SUNSET 739 PM PDT
SEPTEMBER 7 2026.....SUNRISE 636 AM PDT SUNSET 737 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS46-KSEW-060118:SEA:2026-09-05:interim · iem-afos · IEM archive
SHA-256 e5e5dcb514a02f7bd1b2386bfa6e2ea4d8e6004a081f300db50b232e56fe8f9c
Product text
CDUS46 KSEW 060118
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
618 PM PDT SAT SEP 05 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 5 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 70 448 PM 90 2024 75 -5 77
MINIMUM 52 417 AM 42 1947 55 -3 58
AVERAGE 61 65 -4 68
PRECIPITATION (IN)
TODAY 0.00 1.09 2013 0.04 -0.04 0.00
MONTH TO DATE 0.36 0.21 0.15 0.00
SINCE OCT 1 37.27 37.94 -0.67 28.91
SINCE JAN 1 20.49 22.00 -1.51 15.51
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 4 2 2 0
MONTH TO DATE 16 10 6 0
SINCE SEP 1 16 10 6 0
SINCE JUL 1 41 65 -24 24
COOLING
TODAY 0 2 -2 3
MONTH TO DATE 0 10 -10 18
SINCE SEP 1 0 10 -10 18
SINCE JAN 1 265 243 22 312
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION SE (140)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 2.6
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 200 AM
LOWEST 61 200 PM
AVERAGE 75
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 90 2014
MINIMUM TEMPERATURE (F) 55 44 1947
SUNRISE AND SUNSET
SEPTEMBER 5 2026.....SUNRISE 634 AM PDT SUNSET 741 PM PDT
SEPTEMBER 6 2026.....SUNRISE 635 AM PDT SUNSET 739 PM PDT
- 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 KSEA for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KSEA/2026-09-05 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.