NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-09-05 · 2026-09-07 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-09-07 04:30:00 EDT · Product id iem:CDUS46-KSEW-070830:SEA:2026-09-06:final · IEM archive
Product id iem:CDUS46-KSEW-070830:SEA:2026-09-06:final · iem-afos · IEM archive
SHA-256 bf43c3fa2076eed5de7e339e47637cf9f205b4954abfb281f461de59a589a052
Product text
CDUS46 KSEW 070830
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
130 AM PDT MON SEP 07 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 6 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 74 423 PM 90 2014 74 0 73
MINIMUM 53 407 AM 44 1947 55 -2 58
AVERAGE 64 65 -1 66
PRECIPITATION (IN)
YESTERDAY 0.00 0.93 2009 0.05 -0.05 0.03
MONTH TO DATE 0.36 0.26 0.10 0.03
SINCE OCT 1 37.27 37.99 -0.72 28.94
SINCE JAN 1 20.49 22.05 -1.56 15.54
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 1 2 -1 0
MONTH TO DATE 17 12 5 0
SINCE SEP 1 17 12 5 0
SINCE JUL 1 42 67 -25 24
COOLING
YESTERDAY 0 2 -2 1
MONTH TO DATE 0 12 -12 19
SINCE SEP 1 0 12 -12 19
SINCE JAN 1 265 245 20 313
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (340)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 6.3
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 400 AM
LOWEST 40 300 PM
AVERAGE 63
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 94 1981
MINIMUM TEMPERATURE (F) 55 45 1960
1992
SUNRISE AND SUNSET
SEPTEMBER 7 2026.....SUNRISE 636 AM PDT SUNSET 737 PM PDT
SEPTEMBER 8 2026.....SUNRISE 638 AM PDT SUNSET 735 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-070116:SEA:2026-09-06:interim · iem-afos · IEM archive
SHA-256 27993d2dae8b13223b08cf4c59c1258933831b12645b816c0cf4f85c5d80f2fe
Product text
CDUS46 KSEW 070116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT SUN SEP 06 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 6 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 74 423 PM 90 2014 74 0 73
MINIMUM 53 407 AM 44 1947 55 -2 58
AVERAGE 64 65 -1 66
PRECIPITATION (IN)
TODAY 0.00 0.93 2009 0.05 -0.05 0.03
MONTH TO DATE 0.36 0.26 0.10 0.03
SINCE OCT 1 37.27 37.99 -0.72 28.94
SINCE JAN 1 20.49 22.05 -1.56 15.54
SNOWFALL (IN)
TODAY MM 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 1 2 -1 0
MONTH TO DATE 17 12 5 0
SINCE SEP 1 17 12 5 0
SINCE JUL 1 42 67 -25 24
COOLING
TODAY 0 2 -2 1
MONTH TO DATE 0 12 -12 19
SINCE SEP 1 0 12 -12 19
SINCE JAN 1 265 245 20 313
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 6.5
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 400 AM
LOWEST 40 300 PM
AVERAGE 63
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 94 1981
MINIMUM TEMPERATURE (F) 55 45 1960
1992
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.
$$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/2026-09-06 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.