NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-08 · 2026-11-10 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-11-10 02:24:00 EST · Product id ebcedb44-9aa1-4f4d-ac79-52b4c0eade02 · NWS product · IEM archive
Product id ebcedb44-9aa1-4f4d-ac79-52b4c0eade02 · nws-api · NWS product · IEM archive
SHA-256 7c5353724d41e01312862cd2c29481a387b3db8db94f73ea50ad87b540a3d4df
Product text
000
CDUS41 KLWX 100724
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EST TUE NOV 10 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 9 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 64 2:35 PM 81 2023 59 5 68
MINIMUM 40 11:59 PM 19 1967 37 3 45
1971
1976
AVERAGE 52 48 4 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.54 2015 0.11 -0.11 0.08
MONTH TO DATE 0.57 0.98 -0.41 0.34
SINCE SEP 1 7.98 8.57 -0.59 3.69
SINCE JAN 1 37.38 37.79 -0.41 28.33
SNOWFALL (IN)
YESTERDAY 0.0 T 1971 0.0 0.0 0.0
1991
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 13 17 -4 8
MONTH TO DATE 65 141 -76 109
SINCE SEP 1 275 470 -195 367
SINCE JUL 1 275 471 -196 369
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 31 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 8.4
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 11:00 PM
LOWEST 35 2:00 PM
AVERAGE 59
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 77 2020
MINIMUM TEMPERATURE (F) 37 21 2003
SUNRISE AND SUNSET
NOVEMBER 10 2026......SUNRISE 6:47 AM EST SUNSET 5:00 PM EST
NOVEMBER 11 2026......SUNRISE 6:48 AM EST SUNSET 4:59 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
Product id 4f9d3ebd-6dd8-4d35-9f99-484a4ec84969 · nws-api · NWS product · IEM archive
SHA-256 c61580ea4106fac06cefcf0d6a25b499edbae0406c0af3005cc3cdd615b49739
Product text
000
CDUS41 KLWX 092125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 PM EST MON NOV 09 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 9 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 64 2:35 PM 81 2023 59 5 68
MINIMUM 40 6:11 AM 19 1967 37 3 45
1971
1976
AVERAGE 52 48 4 57
PRECIPITATION (IN)
TODAY 0.00 0.54 2015 0.11 -0.11 0.08
MONTH TO DATE 0.57 0.98 -0.41 0.34
SINCE SEP 1 7.98 8.57 -0.59 3.69
SINCE JAN 1 37.38 37.79 -0.41 28.33
SNOWFALL (IN)
TODAY 0.0 T 1971 0.0 0.0 0.0
1991
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 13 17 -4 8
MONTH TO DATE 65 141 -76 109
SINCE SEP 1 275 470 -195 367
SINCE JUL 1 275 471 -196 369
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 31 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 9.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 6:00 AM
LOWEST 35 2:00 PM
AVERAGE 57
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 77 2020
MINIMUM TEMPERATURE (F) 37 21 2003
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.
$$
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/2026-11-09 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.