NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-06 · 2026-11-08 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-11-08 02:26:00 EST · Product id 936d597b-357e-4843-b10b-818ece2f3437 · NWS product · IEM archive
Product id 936d597b-357e-4843-b10b-818ece2f3437 · nws-api · NWS product · IEM archive
SHA-256 a49b3888bccef8abe8ad61cefd6ff111736dce162cbbdeec8e9fd2e864b17ec5
Product text
000
CDUS41 KLWX 080726
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EST SUN NOV 08 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 7 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 60 12:11 AM 80 2024 60 0 64
MINIMUM 46 11:59 PM 22 1982 38 8 27
1991
AVERAGE 53 49 4 46
PRECIPITATION (IN)
YESTERDAY 0.00 2.31 1997 0.11 -0.11 0.16
MONTH TO DATE 0.57 0.76 -0.19 0.16
SINCE SEP 1 7.98 8.35 -0.37 3.51
SINCE JAN 1 37.38 37.57 -0.19 28.15
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2001 0.0 0.0 0.0
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
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 12 16 -4 19
MONTH TO DATE 41 107 -66 96
SINCE SEP 1 251 436 -185 354
SINCE JUL 1 251 437 -186 356
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 7 0 7 0
SINCE SEP 1 275 174 101 182
SINCE JAN 1 1555 1230 325 1330
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 12.5
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 4:00 AM
LOWEST 42 1:00 PM
AVERAGE 54
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 77 1975
1987
2020
MINIMUM TEMPERATURE (F) 38 18 1967
SUNRISE AND SUNSET
NOVEMBER 8 2026......SUNRISE 6:45 AM EST SUNSET 5:02 PM EST
NOVEMBER 9 2026......SUNRISE 6:46 AM EST SUNSET 5:01 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
Product id 2de40c63-4e7e-4728-9c21-5abae1fa1231 · nws-api · NWS product · IEM archive
SHA-256 edf2ae40b5a3159d80bbc8282adc127ac6d31906e065b8a3e8ae42364b4ae387
Product text
000
CDUS41 KLWX 072126
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
426 PM EST SAT NOV 07 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 7 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 60 12:11 AM 80 2024 60 0 64
MINIMUM 46 7:23 AM 22 1982 38 8 27
1991
AVERAGE 53 49 4 46
PRECIPITATION (IN)
TODAY 0.00 2.31 1997 0.11 -0.11 0.16
MONTH TO DATE 0.57 0.76 -0.19 0.16
SINCE SEP 1 7.98 8.35 -0.37 3.51
SINCE JAN 1 37.38 37.57 -0.19 28.15
SNOWFALL (IN)
TODAY 0.0 0.0 2001 0.0 0.0 0.0
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
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 12 16 -4 19
MONTH TO DATE 41 107 -66 96
SINCE SEP 1 251 436 -185 354
SINCE JUL 1 251 437 -186 356
COOLING
TODAY 0 0 0 0
MONTH TO DATE 7 0 7 0
SINCE SEP 1 275 174 101 182
SINCE JAN 1 1555 1230 325 1330
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 12.6
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 4:00 AM
LOWEST 42 1:00 PM
AVERAGE 54
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 77 1975
1987
2020
MINIMUM TEMPERATURE (F) 38 18 1967
SUNRISE AND SUNSET
NOVEMBER 7 2026......SUNRISE 6:44 AM EST SUNSET 5:03 PM EST
NOVEMBER 8 2026......SUNRISE 6:45 AM EST SUNSET 5:02 PM EST
- 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 KIAD for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KIAD/2026-11-07 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.