NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-07 · 2026-11-09 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-11-09 02:26:00 EST · Product id c214af56-5bd0-4d3b-8418-724988cd7e30 · NWS product · IEM archive
Product id c214af56-5bd0-4d3b-8418-724988cd7e30 · nws-api · NWS product · IEM archive
SHA-256 2cafbf37f4ed5c956045cd6bd89b9fc5ff56047955f0dc8ced464036f372a16a
Product text
000
CDUS41 KLWX 090726
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EST MON NOV 09 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 8 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 65 3:32 PM 77 1975 59 6 71
1987
2020
MINIMUM 43 1:27 AM 18 1967 38 5 48
AVERAGE 54 48 6 60
PRECIPITATION (IN)
YESTERDAY 0.00 2.14 1996 0.11 -0.11 0.10
MONTH TO DATE 0.57 0.87 -0.30 0.26
SINCE SEP 1 7.98 8.46 -0.48 3.61
SINCE JAN 1 37.38 37.68 -0.30 28.25
SNOWFALL (IN)
YESTERDAY 0.0 T 1976 0.0 0.0 0.0
1995
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 11 17 -6 5
MONTH TO DATE 52 124 -72 101
SINCE SEP 1 262 453 -191 359
SINCE JUL 1 262 454 -192 361
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 17 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 71 9:00 PM
LOWEST 32 3:00 PM
AVERAGE 52
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 81 2023
MINIMUM TEMPERATURE (F) 37 19 1967
1971
1976
SUNRISE AND SUNSET
NOVEMBER 9 2026......SUNRISE 6:46 AM EST SUNSET 5:01 PM EST
NOVEMBER 10 2026......SUNRISE 6:47 AM EST SUNSET 5:00 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
Product id 34e77028-84e2-439d-bc15-fc809e3528dd · nws-api · NWS product · IEM archive
SHA-256 121cd76c31258fd187153eac99cf1a965190f673a22ec25ebb81aeeb7579d522
Product text
000
CDUS41 KLWX 082123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
423 PM EST SUN NOV 08 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 8 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 65 3:32 PM 77 1975 59 6 71
1987
2020
MINIMUM 43 1:27 AM 18 1967 38 5 48
AVERAGE 54 48 6 60
PRECIPITATION (IN)
TODAY 0.00 2.14 1996 0.11 -0.11 0.10
MONTH TO DATE 0.57 0.87 -0.30 0.26
SINCE SEP 1 7.98 8.46 -0.48 3.61
SINCE JAN 1 37.38 37.68 -0.30 28.25
SNOWFALL (IN)
TODAY 0.0 T 1976 0.0 0.0 0.0
1995
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 11 17 -6 5
MONTH TO DATE 52 124 -72 101
SINCE SEP 1 262 453 -191 359
SINCE JUL 1 262 454 -192 361
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 17 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 7.8
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 70 1:00 AM
LOWEST 32 3:00 PM
AVERAGE 51
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 81 2023
MINIMUM TEMPERATURE (F) 37 19 1967
1971
1976
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.
$$
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/2026-11-08 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.