NWS CLI archive · settlement source
CLIORD · 시카고 · America/Chicago · ← 2026-10-16 · 2026-10-18 → · All dates for KORD · JSON · METAR-derived record
Final issued 2026-10-18 02:31:00 EDT · Product id iem:CDUS43-KLOT-180631:ORD:2026-10-17:final · IEM archive
Product id iem:CDUS43-KLOT-180631:ORD:2026-10-17:final · iem-afos · IEM archive
SHA-256 7839fdb51e9d10e93d86e7a15ea7e2b32f90b041815ba563eb8784df65682308
Product text
CDUS43 KLOT 180631
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT SUN OCT 18 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 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 57 2:47 PM 86 1950 62 -5 74
MINIMUM 39 6:51 AM 26 1948 45 -6 57
AVERAGE 48 54 -6 66
PRECIPITATION (IN)
YESTERDAY 0.00 3.61 1988 0.11 -0.11 0.00
MONTH TO DATE 2.54 1.91 0.63 1.55
SINCE SEP 1 6.24 5.10 1.14 2.04
SINCE JAN 1 37.21 31.81 5.40 24.49
SNOWFALL (IN)
YESTERDAY 0.0 T 1930 0.0 0.0 0.0
1976
2022
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 17 12 5 0
MONTH TO DATE 64 153 -89 59
SINCE SEP 1 91 230 -139 91
SINCE JUL 1 91 236 -145 96
COOLING
YESTERDAY 0 0 0 1
MONTH TO DATE 31 12 19 56
SINCE SEP 1 218 128 90 222
SINCE JAN 1 1144 1000 144 1214
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 7.7
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 70 11:00 PM
LOWEST 43 3:00 PM
AVERAGE 57
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 87 1950
MINIMUM TEMPERATURE (F) 45 20 1948
SUNRISE AND SUNSET
OCTOBER 18 2026.......SUNRISE 7:08 AM CDT SUNSET 6:05 PM CDT
OCTOBER 19 2026.......SUNRISE 7:09 AM CDT SUNSET 6:04 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-172132:ORD:2026-10-17:interim · iem-afos · IEM archive
SHA-256 9f22fa21cdff241968e507c785183ecf48d4ac1de454675dd796451f72517ac8
Product text
CDUS43 KLOT 172132
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CDT SAT OCT 17 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 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 57 2:47 PM 86 1950 62 -5 74
MINIMUM 39 6:51 AM 26 1948 45 -6 57
AVERAGE 48 54 -6 66
PRECIPITATION (IN)
TODAY 0.00 3.61 1988 0.11 -0.11 0.00
MONTH TO DATE 2.54 1.91 0.63 1.55
SINCE SEP 1 6.24 5.10 1.14 2.04
SINCE JAN 1 37.21 31.81 5.40 24.49
SNOWFALL (IN)
TODAY 0.0 T 1930 0.0 0.0 0.0
1976
2022
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 17 12 5 0
MONTH TO DATE 64 153 -89 59
SINCE SEP 1 91 230 -139 91
SINCE JUL 1 91 236 -145 96
COOLING
TODAY 0 0 0 1
MONTH TO DATE 31 12 19 56
SINCE SEP 1 218 128 90 222
SINCE JAN 1 1144 1000 144 1214
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 7.0
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 70 7:00 AM
LOWEST 43 3:00 PM
AVERAGE 57
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 87 1950
MINIMUM TEMPERATURE (F) 45 20 1948
SUNRISE AND SUNSET
OCTOBER 17 2026.......SUNRISE 7:06 AM CDT SUNSET 6:07 PM CDT
OCTOBER 18 2026.......SUNRISE 7:08 AM CDT SUNSET 6:05 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/2026-10-17 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.