NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-10-04 · 2026-10-06 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-10-06 02:29:00 EDT · Product id iem:CDUS41-KLWX-060629:IAD:2026-10-05:final · IEM archive
Product id iem:CDUS41-KLWX-060629:IAD:2026-10-05:final · iem-afos · IEM archive
SHA-256 ca1a1c21e5ed1154133fd5fa8bd257772b5a325c039c324cf25f7b15f62a2b39
Product text
CDUS41 KLWX 060629
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
229 AM EDT TUE OCT 06 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 5 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 74 3:00 PM 90 1967 72 2 82
2013
MINIMUM 56 11:59 PM 32 1970 50 6 46
AVERAGE 65 61 4 64
PRECIPITATION (IN)
YESTERDAY 0.00 2.04 1971 0.12 -0.12 0.00
MONTH TO DATE 0.40 0.63 -0.23 0.00
SINCE SEP 1 4.20 4.57 -0.37 1.22
SINCE JAN 1 33.60 33.79 -0.19 25.86
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 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 MM
DEGREE DAYS
HEATING
YESTERDAY 0 6 -6 1
MONTH TO DATE 5 25 -20 17
SINCE SEP 1 26 70 -44 24
SINCE JUL 1 26 71 -45 26
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 19 10 9 0
SINCE SEP 1 243 162 81 170
SINCE JAN 1 1523 1218 305 1318
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 36 5:00 PM
AVERAGE 68
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 89 2013
MINIMUM TEMPERATURE (F) 49 28 1968
SUNRISE AND SUNSET
OCTOBER 6 2026.......SUNRISE 7:11 AM EDT SUNSET 6:45 PM EDT
OCTOBER 7 2026.......SUNRISE 7:11 AM EDT SUNSET 6:43 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS41-KLWX-052123:IAD:2026-10-05:interim · iem-afos · IEM archive
SHA-256 3547f4f624db400fd0917febe4c06e04c22b173ffad8d46d38aab1dea861f337
Product text
CDUS41 KLWX 052123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT MON OCT 05 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 5 2026...
VALID TODAY AS OF 0500 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 74 3:00 PM 90 1967 72 2 82
2013
MINIMUM 57 7:16 AM 32 1970 50 7 46
AVERAGE 66 61 5 64
PRECIPITATION (IN)
TODAY 0.00 2.04 1971 0.12 -0.12 0.00
MONTH TO DATE 0.40 0.63 -0.23 0.00
SINCE SEP 1 4.20 4.57 -0.37 1.22
SINCE JAN 1 33.60 33.79 -0.19 25.86
SNOWFALL (IN)
TODAY 0.0 MM MM 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 0 6 -6 1
MONTH TO DATE 5 25 -20 17
SINCE SEP 1 26 70 -44 24
SINCE JUL 1 26 71 -45 26
COOLING
TODAY 1 2 -1 0
MONTH TO DATE 20 10 10 0
SINCE SEP 1 244 162 82 170
SINCE JAN 1 1524 1218 306 1318
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 6.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 37 4:00 PM
AVERAGE 69
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 89 2013
MINIMUM TEMPERATURE (F) 49 28 1968
SUNRISE AND SUNSET
OCTOBER 5 2026.......SUNRISE 7:10 AM EDT SUNSET 6:46 PM EDT
OCTOBER 6 2026.......SUNRISE 7:11 AM EDT SUNSET 6:45 PM EDT
- 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/2026-10-05 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.