NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-09-12 · 2026-09-14 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-09-14 04:30:00 EDT · Product id iem:CDUS46-KSEW-140830:SEA:2026-09-13:final · IEM archive
Product id iem:CDUS46-KSEW-140830:SEA:2026-09-13:final · iem-afos · IEM archive
SHA-256 79d68209ca78661eac7a9e9a66657777f579b2c97fdd4e9787a5207eb859c993
Product text
CDUS46 KSEW 140830
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
130 AM PDT MON SEP 14 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 13 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 60 711 PM 87 1999 73 -13 75
MINIMUM 54 1004 AM 39 1952 54 0 57
AVERAGE 57 63 -6 66
PRECIPITATION (IN)
YESTERDAY 0.55R 0.51 1955 0.05 0.50 0.00
MONTH TO DATE 1.02 0.59 0.43 0.06
SINCE OCT 1 37.93 38.32 -0.39 28.97
SINCE JAN 1 21.15 22.38 -1.23 15.57
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 8 3 5 0
MONTH TO DATE 37 27 10 5
SINCE SEP 1 37 27 10 5
SINCE JUL 1 62 82 -20 29
COOLING
YESTERDAY 0 1 -1 1
MONTH TO DATE 1 22 -21 22
SINCE SEP 1 1 22 -21 22
SINCE JAN 1 266 255 11 316
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 10.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 500 AM
LOWEST 81 800 PM
AVERAGE 89
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 93 1979
MINIMUM TEMPERATURE (F) 54 46 1947
1955
1986
SUNRISE AND SUNSET
SEPTEMBER 14 2026.....SUNRISE 646 AM PDT SUNSET 723 PM PDT
SEPTEMBER 15 2026.....SUNRISE 647 AM PDT SUNSET 721 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-140134:SEA:2026-09-13:interim · iem-afos · IEM archive
SHA-256 46f1562c6b30faed4bf052adb58177f631ee98bf3de80d6f791ffdc2ecf88f24
Product text
CDUS46 KSEW 140134
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
634 PM PDT SUN SEP 13 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 13 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 60 459 PM 87 1999 73 -13 75
MINIMUM 54 1004 AM 39 1952 54 0 57
AVERAGE 57 63 -6 66
PRECIPITATION (IN)
TODAY 0.55R 0.51 1955 0.05 0.50 0.00
MONTH TO DATE 1.02 0.59 0.43 0.06
SINCE OCT 1 37.93 38.32 -0.39 28.97
SINCE JAN 1 21.15 22.38 -1.23 15.57
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 8 3 5 0
MONTH TO DATE 37 27 10 5
SINCE SEP 1 37 27 10 5
SINCE JUL 1 62 82 -20 29
COOLING
TODAY 0 1 -1 1
MONTH TO DATE 1 22 -21 22
SINCE SEP 1 1 22 -21 22
SINCE JAN 1 266 255 11 316
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 9.8
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 500 AM
LOWEST 87 200 PM
AVERAGE 92
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 93 1979
MINIMUM TEMPERATURE (F) 54 46 1947
1955
1986
SUNRISE AND SUNSET
SEPTEMBER 13 2026.....SUNRISE 644 AM PDT SUNSET 725 PM PDT
SEPTEMBER 14 2026.....SUNRISE 646 AM PDT SUNSET 723 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/2026-09-13 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.