NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-12 · 2026-11-14 → · All dates for KIAD · JSON · METAR-derived record
The local day has not ended (ends 2026-11-14T05:00:00.000Z). The final CLI is issued by the local NWS office after local midnight, normally within 1-3 hours.
Product id 17d3fe77-6c4a-4712-b8d9-0cd62eb1377a · nws-api · NWS product · IEM archive
SHA-256 fe845bc30586d79a7ad652573fc690e03e3ddfdc3a21dc6b1ddf3ba3eee50eb0
Product text
000
CDUS41 KLWX 132123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
423 PM EST FRI NOV 13 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 13 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 50 2:04 PM 75 1964 58 -8 59
MINIMUM 45 8:28 AM 19 2019 36 9 35
AVERAGE 48 47 1 47
PRECIPITATION (IN)
TODAY 0.00 0.87 2012 0.10 -0.10 0.00
MONTH TO DATE 0.59 1.39 -0.80 0.34
SINCE SEP 1 8.00 8.98 -0.98 3.69
SINCE JAN 1 37.40 38.20 -0.80 28.33
SNOWFALL (IN)
TODAY 0.0 T 1995 0.0 0.0 0.0
2012
2014
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 17 18 -1 18
MONTH TO DATE 115 212 -97 192
SINCE SEP 1 325 541 -216 450
SINCE JUL 1 325 542 -217 452
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 22 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 13.2
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 12:00 AM
LOWEST 49 12:00 PM
AVERAGE 59
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 80 1985
MINIMUM TEMPERATURE (F) 36 13 1986
SUNRISE AND SUNSET
NOVEMBER 13 2026......SUNRISE 6:50 AM EST SUNSET 4:57 PM EST
NOVEMBER 14 2026......SUNRISE 6:52 AM EST SUNSET 4:57 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/2026-11-13 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.