NWS CLI archive · settlement source
CLIIAD · 워싱턴 D.C. · America/New_York · ← 2026-11-11 · 2026-11-13 → · All dates for KIAD · JSON · METAR-derived record
Final issued 2026-11-13 02:22:00 EST · Product id 53b33e31-0f5a-4faa-a4a0-080b4b4f4eb9 · NWS product · IEM archive
Product id 53b33e31-0f5a-4faa-a4a0-080b4b4f4eb9 · nws-api · NWS product · IEM archive
SHA-256 566b29723ba91135df4461b0dbe2073c17021840886b52a6bd462cb7dc950c83
Product text
000
CDUS41 KLWX 130722
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EST FRI NOV 13 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 12 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 3:04 PM 74 1964 58 6 62
MINIMUM 44 5:01 AM 22 1973 36 8 34
1988
AVERAGE 54 47 7 48
PRECIPITATION (IN)
YESTERDAY 0.02 1.92 2004 0.10 -0.08 0.00
MONTH TO DATE 0.59 1.29 -0.70 0.34
SINCE SEP 1 8.00 8.88 -0.88 3.69
SINCE JAN 1 37.40 38.10 -0.70 28.33
SNOWFALL (IN)
YESTERDAY 0.0 4.2 1968 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 11 18 -7 17
MONTH TO DATE 98 194 -96 174
SINCE SEP 1 308 523 -215 432
SINCE JUL 1 308 524 -216 434
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 24 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 54 2:00 PM
AVERAGE 77
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 58 75 1964
MINIMUM TEMPERATURE (F) 36 19 2019
SUNRISE AND SUNSET
NOVEMBER 13 2026......SUNRISE 6:50 AM EST SUNSET 4:57 PM EST
NOVEMBER 14 2026......SUNRISE 6:52 AM EST SUNSET 4:57 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
Product id 5317557c-42a1-48e5-8329-d87ec523bddc · nws-api · NWS product · IEM archive
SHA-256 487562d7e3960236e44e66acb831654e2dc0ad43f42da7ade7c59862c3c720e7
Product text
000
CDUS41 KLWX 122128
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
428 PM EST THU NOV 12 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 12 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 3:04 PM 74 1964 58 6 62
MINIMUM 44 5:01 AM 22 1973 36 8 34
1988
AVERAGE 54 47 7 48
PRECIPITATION (IN)
TODAY 0.01 1.92 2004 0.10 -0.09 0.00
MONTH TO DATE 0.58 1.29 -0.71 0.34
SINCE SEP 1 7.99 8.88 -0.89 3.69
SINCE JAN 1 37.39 38.10 -0.71 28.33
SNOWFALL (IN)
TODAY 0.0 4.2 1968 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 11 18 -7 17
MONTH TO DATE 98 194 -96 174
SINCE SEP 1 308 523 -215 432
SINCE JUL 1 308 524 -216 434
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 14 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 3.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 54 2:00 PM
AVERAGE 77
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 58 75 1964
MINIMUM TEMPERATURE (F) 36 19 2019
SUNRISE AND SUNSET
NOVEMBER 12 2026......SUNRISE 6:49 AM EST SUNSET 4:58 PM EST
NOVEMBER 13 2026......SUNRISE 6:50 AM EST SUNSET 4:57 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/2026-11-12 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.