NWS CLI archive · settlement source
CLIORD · 시카고 · America/Chicago · ← 2026-08-30 · 2026-09-01 → · All dates for KORD · JSON · METAR-derived record
Final issued 2026-09-01 02:33:00 EDT · Product id iem:CDUS43-KLOT-010633:ORD:2026-08-31:final · IEM archive
Product id iem:CDUS43-KLOT-010633:ORD:2026-08-31:final · iem-afos · IEM archive
SHA-256 3347c2ad657cf1e14d9dda6219b83bec68d16e2f8971f8c61ebdde92785caea6
Product text
CDUS43 KLOT 010633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT TUE SEP 01 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 31 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 87 12:42 PM 99 1953 80 7 75
MINIMUM 71 9:23 AM 47 1872 63 8 54
AVERAGE 79 72 7 65
PRECIPITATION (IN)
YESTERDAY 0.65 1.24 1977 0.14 0.51 0.00
MONTH TO DATE 5.02 4.25 0.77 5.03
SINCE JUN 1 15.38 12.06 3.32 12.95
SINCE JAN 1 30.97 26.71 4.26 22.45
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 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 0 0 0
MONTH TO DATE 0 0 0 5
SINCE JUN 1 11 33 -22 18
SINCE JUL 1 0 2 -2 5
COOLING
YESTERDAY 14 7 7 0
MONTH TO DATE 293 277 16 269
SINCE JUN 1 848 802 46 958
SINCE JAN 1 926 872 54 992
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 7:00 AM
LOWEST 55 12:00 PM
AVERAGE 71
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 101 1953
MINIMUM TEMPERATURE (F) 62 45 1949
SUNRISE AND SUNSET
SEPTEMBER 1 2026.....SUNRISE 6:17 AM CDT SUNSET 7:25 PM CDT
SEPTEMBER 2 2026.....SUNRISE 6:18 AM CDT SUNSET 7:23 PM CDT
- 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 KORD for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KORD/2026-08-31 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.