NWS CLI archive · settlement source
CLIORD · 시카고 · America/Chicago · ← 2026-09-16 · 2026-09-18 → · All dates for KORD · JSON · METAR-derived record
Final issued 2026-09-18 02:35:00 EDT · Product id iem:CDUS43-KLOT-180635:ORD:2026-09-17:final · IEM archive
Product id iem:CDUS43-KLOT-180635:ORD:2026-09-17:final · iem-afos · IEM archive
SHA-256 4f253650f6fb1e25052c9e0e05dd16dc7922eee5b646d78f7c2a84e75d368cbf
Product text
CDUS43 KLOT 180635
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT FRI SEP 18 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 17 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 80 2:15 PM 93 1955 75 5 83
MINIMUM 66 5:37 AM 37 1984 57 9 61
AVERAGE 73 66 7 72
PRECIPITATION (IN)
YESTERDAY 0.71 2.42 1927 0.11 0.60 0.00
MONTH TO DATE 0.89 1.84 -0.95 0.28
SINCE SEP 1 0.89 1.84 -0.95 0.28
SINCE JAN 1 31.86 28.55 3.31 22.73
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 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 3 -3 0
MONTH TO DATE 3 21 -18 32
SINCE SEP 1 3 21 -18 32
SINCE JUL 1 3 27 -24 37
COOLING
YESTERDAY 8 4 4 7
MONTH TO DATE 180 87 93 64
SINCE SEP 1 180 87 93 64
SINCE JAN 1 1106 959 147 1056
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 6.7
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 79 1:00 PM
AVERAGE 90
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 94 1955
MINIMUM TEMPERATURE (F) 56 40 1889
1901
1903
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:35 AM CDT SUNSET 6:56 PM CDT
SEPTEMBER 19 2026.....SUNRISE 6:36 AM CDT SUNSET 6:54 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS43-KLOT-172211:ORD:2026-09-17:interim · iem-afos · IEM archive
SHA-256 842cece9e4c0dcd8b8a9fbf1605b15ddb2441f608e3e46ce4ae398e37003a631
Product text
CDUS43 KLOT 172211
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
511 PM CDT THU SEP 17 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 80 2:15 PM 93 1955 75 5 83
MINIMUM 66 5:37 AM 37 1984 57 9 61
AVERAGE 73 66 7 72
PRECIPITATION (IN)
TODAY 0.71 2.42 1927 0.11 0.60 0.00
MONTH TO DATE 0.89 1.84 -0.95 0.28
SINCE SEP 1 0.89 1.84 -0.95 0.28
SINCE JAN 1 31.86 28.55 3.31 22.73
SNOWFALL (IN)
TODAY 0.0 0.0 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 3 -3 0
MONTH TO DATE 3 21 -18 32
SINCE SEP 1 3 21 -18 32
SINCE JUL 1 3 27 -24 37
COOLING
TODAY 8 4 4 7
MONTH TO DATE 180 87 93 64
SINCE SEP 1 180 87 93 64
SINCE JAN 1 1106 959 147 1056
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 3.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 79 1:00 PM
AVERAGE 90
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 94 1955
MINIMUM TEMPERATURE (F) 56 40 1889
1901
1903
SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE 6:34 AM CDT SUNSET 6:57 PM CDT
SEPTEMBER 18 2026.....SUNRISE 6:35 AM CDT SUNSET 6:56 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/2026-09-17 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.