NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-10-01 · 2026-10-03 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-10-03 02:32:00 EDT · Product id iem:CDUS41-KLWX-030632:IAD:2026-10-02:final · IEM archive
Product id iem:CDUS41-KLWX-030632:IAD:2026-10-02:final · iem-afos · IEM archive
SHA-256 f0499cc0b6d8f1e24846c4fe4f28ad176713dcab62cb4a4c8f8d92d4b7b6f412
Product text
CDUS41 KLWX 030632
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
232 AM EDT SAT OCT 03 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 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 89 3:31 PM 96 2019 73 16 73
MINIMUM 60 6:39 AM 32 1997 51 9 44
1998
AVERAGE 75 62 13 59
PRECIPITATION (IN)
YESTERDAY 0.24 2.35 2012 0.13 0.11 0.00
MONTH TO DATE 0.24 0.26 -0.02 0.00
SINCE SEP 1 4.04 4.20 -0.16 1.22
SINCE JAN 1 33.44 33.42 0.02 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 0
DEGREE DAYS
HEATING
YESTERDAY 0 5 -5 6
MONTH TO DATE 0 9 -9 9
SINCE SEP 1 21 54 -33 16
SINCE JUL 1 21 55 -34 18
COOLING
YESTERDAY 10 2 8 0
MONTH TO DATE 19 4 15 0
SINCE SEP 1 217 156 61 170
SINCE JAN 1 1497 1212 285 1318
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 6.1
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 7:00 PM
LOWEST 46 1:00 PM
AVERAGE 70
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 86 2002
2007
2018
MINIMUM TEMPERATURE (F) 51 30 1974
2003
SUNRISE AND SUNSET
OCTOBER 3 2026.......SUNRISE 7:08 AM EDT SUNSET 6:49 PM EDT
OCTOBER 4 2026.......SUNRISE 7:09 AM EDT SUNSET 6:48 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-022130:IAD:2026-10-02:interim · iem-afos · IEM archive
SHA-256 435a2ec3dc00783078eb7d27b583a180aab477491378e6a6eb8b4d9202ee326d
Product text
CDUS41 KLWX 022130
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
530 PM EDT FRI OCT 02 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 2 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 89 3:31 PM 96 2019 73 16 73
MINIMUM 60 6:39 AM 32 1997 51 9 44
1998
AVERAGE 75 62 13 59
PRECIPITATION (IN)
TODAY 0.00 2.35 2012 0.13 -0.13 0.00
MONTH TO DATE 0.00 0.26 -0.26 0.00
SINCE SEP 1 3.80 4.20 -0.40 1.22
SINCE JAN 1 33.20 33.42 -0.22 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 5 -5 6
MONTH TO DATE 0 9 -9 9
SINCE SEP 1 21 54 -33 16
SINCE JUL 1 21 55 -34 18
COOLING
TODAY 10 2 8 0
MONTH TO DATE 19 4 15 0
SINCE SEP 1 217 156 61 170
SINCE JAN 1 1497 1212 285 1318
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 6.1
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 5:00 AM
LOWEST 46 1:00 PM
AVERAGE 70
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 86 2002
2007
2018
MINIMUM TEMPERATURE (F) 51 30 1974
2003
SUNRISE AND SUNSET
OCTOBER 2 2026.......SUNRISE 7:07 AM EDT SUNSET 6:51 PM EDT
OCTOBER 3 2026.......SUNRISE 7:08 AM EDT SUNSET 6:49 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/2026-10-02 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.