NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-01 · 2026-11-03 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-11-03 02:27:00 EST · Product id b45b05ea-6883-4d65-9bbb-79dbf78e951f · NWS product · IEM archive
Product id b45b05ea-6883-4d65-9bbb-79dbf78e951f · nws-api · NWS product · IEM archive
SHA-256 9ff9b5d9caf796bdc5364df10eabe810080dba1f00da1176de05acb37fc75752
Product text
000
CDUS41 KLWX 030727
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EST TUE NOV 03 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 2 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 63 4:05 PM 84 1971 62 1 66
MINIMUM 43 5:56 AM 21 1976 39 4 38
AVERAGE 53 50 3 52
PRECIPITATION (IN)
YESTERDAY 0.00 1.32 2018 0.11 -0.11 0.00
MONTH TO DATE 0.00 0.22 -0.22 0.00
SINCE SEP 1 7.41 7.81 -0.40 3.35
SINCE JAN 1 36.81 37.03 -0.22 27.99
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 15 -3 13
MONTH TO DATE 22 29 -7 26
SINCE SEP 1 232 358 -126 284
SINCE JUL 1 232 359 -127 286
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 268 174 94 182
SINCE JAN 1 1548 1230 318 1330
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 3.6
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 6:00 AM
LOWEST 50 2:00 PM
AVERAGE 72
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 81 1982
1990
MINIMUM TEMPERATURE (F) 39 22 1980
SUNRISE AND SUNSET
NOVEMBER 3 2026......SUNRISE 6:39 AM EST SUNSET 5:07 PM EST
NOVEMBER 4 2026......SUNRISE 6:40 AM EST SUNSET 5:06 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
Product id 384bf8c7-9676-4af8-86bc-36143b00d1b0 · nws-api · NWS product · IEM archive
SHA-256 bc58ed63707d06eab73349146f1cfdb00394f20172bc8aa1599345f5e2469af9
Product text
000
CDUS41 KLWX 022127
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
427 PM EST MON NOV 02 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 2 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 63 3:59 PM 84 1971 62 1 66
MINIMUM 43 5:56 AM 21 1976 39 4 38
AVERAGE 53 50 3 52
PRECIPITATION (IN)
TODAY 0.00 1.32 2018 0.11 -0.11 0.00
MONTH TO DATE 0.00 0.22 -0.22 0.00
SINCE SEP 1 7.41 7.81 -0.40 3.35
SINCE JAN 1 36.81 37.03 -0.22 27.99
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 15 -3 13
MONTH TO DATE 22 29 -7 26
SINCE SEP 1 232 358 -126 284
SINCE JUL 1 232 359 -127 286
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 268 174 94 182
SINCE JAN 1 1548 1230 318 1330
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 3.0
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 6:00 AM
LOWEST 50 2:00 PM
AVERAGE 72
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 81 1982
1990
MINIMUM TEMPERATURE (F) 39 22 1980
SUNRISE AND SUNSET
NOVEMBER 2 2026......SUNRISE 6:38 AM EST SUNSET 5:08 PM EST
NOVEMBER 3 2026......SUNRISE 6:39 AM EST SUNSET 5:07 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/2026-11-02 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.