NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-10-05 · 2026-10-07 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-10-07 02:35:00 EDT · Product id iem:CDUS41-KLWX-070635:IAD:2026-10-06:final · IEM archive
Product id iem:CDUS41-KLWX-070635:IAD:2026-10-06:final · iem-afos · IEM archive
SHA-256 6b4476787a49031e1d9cc4bdc9aff92f095aab462bed1b4824feca07ca2f5336
Product text
CDUS41 KLWX 070635
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
235 AM EDT WED OCT 07 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 6 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 65 4:39 PM 89 2013 72 -7 84
MINIMUM 44 11:59 PM 28 1968 49 -5 53
AVERAGE 55 60 -5 69
PRECIPITATION (IN)
YESTERDAY 0.00 1.05 2006 0.13 -0.13 0.00
MONTH TO DATE 0.40 0.76 -0.36 0.00
SINCE SEP 1 4.20 4.70 -0.50 1.22
SINCE JAN 1 33.60 33.92 -0.32 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 10 6 4 0
MONTH TO DATE 15 31 -16 17
SINCE SEP 1 36 76 -40 24
SINCE JUL 1 36 77 -41 26
COOLING
YESTERDAY 0 1 -1 4
MONTH TO DATE 19 11 8 4
SINCE SEP 1 243 163 80 174
SINCE JAN 1 1523 1219 304 1322
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 3.1
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 11:00 PM
LOWEST 34 2:00 PM
AVERAGE 62
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 91 2007
MINIMUM TEMPERATURE (F) 49 31 1988
SUNRISE AND SUNSET
OCTOBER 7 2026.......SUNRISE 7:11 AM EDT SUNSET 6:43 PM EDT
OCTOBER 8 2026.......SUNRISE 7:12 AM EDT SUNSET 6:42 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-062126:IAD:2026-10-06:interim · iem-afos · IEM archive
SHA-256 0b777c8875d1e2401b66f391ee8fb978c02879a044322bddd87467e1e5de39c0
Product text
CDUS41 KLWX 062126
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
526 PM EDT TUE OCT 06 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 6 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 65 3:54 PM 89 2013 72 -7 84
MINIMUM 45 6:26 AM 28 1968 49 -4 53
AVERAGE 55 60 -5 69
PRECIPITATION (IN)
TODAY 0.00 1.05 2006 0.13 -0.13 0.00
MONTH TO DATE 0.40 0.76 -0.36 0.00
SINCE SEP 1 4.20 4.70 -0.50 1.22
SINCE JAN 1 33.60 33.92 -0.32 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 10 6 4 0
MONTH TO DATE 15 31 -16 17
SINCE SEP 1 36 76 -40 24
SINCE JUL 1 36 77 -41 26
COOLING
TODAY 0 1 -1 4
MONTH TO DATE 19 11 8 4
SINCE SEP 1 243 163 80 174
SINCE JAN 1 1523 1219 304 1322
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 4.8
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74 7:00 AM
LOWEST 34 2:00 PM
AVERAGE 54
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 91 2007
MINIMUM TEMPERATURE (F) 49 31 1988
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.
$$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/2026-10-06 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.