NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-10 · 2026-11-12 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-11-12 02:25:00 EST · Product id cb9412ea-5f65-49ea-ae85-8e5627b227c9 · NWS product · IEM archive
Product id cb9412ea-5f65-49ea-ae85-8e5627b227c9 · nws-api · NWS product · IEM archive
SHA-256 a27639a5e00f51f02d049cba65df50ff908c86f9061858c4319003bcde91fbf4
Product text
000
CDUS41 KLWX 120725
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
225 AM EST THU NOV 12 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 11 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 68 3:38 PM 78 2006 58 10 46
MINIMUM 40 6:08 AM 16 1973 37 3 27
AVERAGE 54 48 6 37
PRECIPITATION (IN)
YESTERDAY 0.00 1.21 2020 0.10 -0.10 0.00
MONTH TO DATE 0.57 1.19 -0.62 0.34
SINCE SEP 1 7.98 8.78 -0.80 3.69
SINCE JAN 1 37.38 38.00 -0.62 28.33
SNOWFALL (IN)
YESTERDAY 0.0 5.3 1987 0.0 0.0 0.0
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 18 -7 28
MONTH TO DATE 87 176 -89 157
SINCE SEP 1 297 505 -208 415
SINCE JUL 1 297 506 -209 417
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 13 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 4.4
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 4:00 AM
LOWEST 40 1:00 PM
AVERAGE 66
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 58 74 1964
MINIMUM TEMPERATURE (F) 36 22 1973
1988
SUNRISE AND SUNSET
NOVEMBER 12 2026......SUNRISE 6:49 AM EST SUNSET 4:58 PM EST
NOVEMBER 13 2026......SUNRISE 6:50 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.
$$
Product id 7c672148-654e-47c7-baee-ef87a3fd4fea · nws-api · NWS product · IEM archive
SHA-256 06b6cd4eae3f1def1bd1f0c342c61335d7fbed3508d720c782d5007629bd2c2e
Product text
000
CDUS41 KLWX 112126
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
426 PM EST WED NOV 11 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 11 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 68 3:38 PM 78 2006 58 10 46
MINIMUM 40 6:08 AM 16 1973 37 3 27
AVERAGE 54 48 6 37
PRECIPITATION (IN)
TODAY 0.00 1.21 2020 0.10 -0.10 0.00
MONTH TO DATE 0.57 1.19 -0.62 0.34
SINCE SEP 1 7.98 8.78 -0.80 3.69
SINCE JAN 1 37.38 38.00 -0.62 28.33
SNOWFALL (IN)
TODAY 0.0 5.3 1987 0.0 0.0 0.0
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 18 -7 28
MONTH TO DATE 87 176 -89 157
SINCE SEP 1 297 505 -208 415
SINCE JUL 1 297 506 -209 417
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 13 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 3.1
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 4:00 AM
LOWEST 40 1:00 PM
AVERAGE 66
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 58 74 1964
MINIMUM TEMPERATURE (F) 36 22 1973
1988
SUNRISE AND SUNSET
NOVEMBER 11 2026......SUNRISE 6:48 AM EST SUNSET 4:59 PM EST
NOVEMBER 12 2026......SUNRISE 6:49 AM EST SUNSET 4:58 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/2026-11-11 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.