NWS CLI archive · settlement source
KSEA · 2026-10-15 - NWS CLI
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-14 · 2026-10-16 → · All dates for KSEA · JSON · METAR-derived record
Settlement value - latest final issue
finalHigh
68°F (20°C)
Low
50°F (10°C)
Precip
0 in (0 mm)
Final issued 2026-10-16 04:31:00 EDT · Product id iem:CDUS46-KSEW-160831:SEA:2026-10-15:final · IEM archive
Every issue for this date, as received
final2026-10-16 04:31:00 EDT · KSEW · CDUS46 KSEW 160831 · 68°F / 50°F / 0 in
Product id iem:CDUS46-KSEW-160831:SEA:2026-10-15:final · iem-afos · IEM archive
SHA-256 87c2875fc2cc194b6ba179ca1c73f0d631c1306bdde64391c73de955026f7e9c
Product text
CDUS46 KSEW 160831
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
131 AM PDT FRI OCT 16 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 68 341 PM 77 1991 61 7 61
2022
MINIMUM 50 1146 PM 35 1946 47 3 38
1952
AVERAGE 59 54 5 50
PRECIPITATION (IN)
YESTERDAY 0.00 0.93 1951 0.12 -0.12 0.00
MONTH TO DATE 0.06 1.50 -1.44 0.60
SINCE OCT 1 0.06 1.50 -1.44 0.60
SINCE JAN 1 21.65 24.90 -3.25 16.87
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 6 11 -5 15
MONTH TO DATE 113 134 -21 135
SINCE SEP 1 246 236 10 186
SINCE JUL 1 271 291 -20 210
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 2 30 -28 34
SINCE JAN 1 267 263 4 328
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 6.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 57 300 PM
AVERAGE 79
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 88 2022
MINIMUM TEMPERATURE (F) 47 32 1946
SUNRISE AND SUNSET
OCTOBER 16 2026.......SUNRISE 730 AM PDT SUNSET 619 PM PDT
OCTOBER 17 2026.......SUNRISE 731 AM PDT SUNSET 617 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$interim 0500 PM2026-10-15 21:28:00 EDT · KSEW · CDUS46 KSEW 160128 · 68°F / 50°F / 0 in
Product id iem:CDUS46-KSEW-160128:SEA:2026-10-15:interim · iem-afos · IEM archive
SHA-256 a4725551dbccdc297f4ec04661b8efff62ae2f220973c82fae3d68e461a7dc3e
Product text
CDUS46 KSEW 160128
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
628 PM PDT THU OCT 15 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 68 341 PM 77 1991 61 7 61
2022
MINIMUM 50 810 AM 35 1946 47 3 38
1952
AVERAGE 59 54 5 50
PRECIPITATION (IN)
TODAY 0.00 0.93 1951 0.12 -0.12 0.00
MONTH TO DATE 0.06 1.50 -1.44 0.60
SINCE OCT 1 0.06 1.50 -1.44 0.60
SINCE JAN 1 21.65 24.90 -3.25 16.87
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 6 11 -5 15
MONTH TO DATE 113 134 -21 135
SINCE SEP 1 246 236 10 186
SINCE JUL 1 271 291 -20 210
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 2 30 -28 34
SINCE JAN 1 267 263 4 328
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 7.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 57 300 PM
AVERAGE 79
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 88 2022
MINIMUM TEMPERATURE (F) 47 32 1946
SUNRISE AND SUNSET
OCTOBER 15 2026.......SUNRISE 728 AM PDT SUNSET 621 PM PDT
OCTOBER 16 2026.......SUNRISE 730 AM PDT SUNSET 619 PM PDT
- 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 KSEA for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KSEA/2026-10-15 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.