Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 292134
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT TUE SEP 29 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 29 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 78 2:56 PM 99 1953 70 8 89
MINIMUM 54 6:37 AM 32 1984 52 2 62
AVERAGE 66 61 5 76
PRECIPITATION (IN)
TODAY 0.00 1.39 1921 0.09 -0.09 0.00
MONTH TO DATE 2.96 3.09 -0.13 0.49
SINCE SEP 1 2.96 3.09 -0.13 0.49
SINCE JAN 1 33.93 29.80 4.13 22.94
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 6 -6 0
MONTH TO DATE 27 70 -43 32
SINCE SEP 1 27 70 -43 32
SINCE JUL 1 27 76 -49 37
COOLING
TODAY 1 2 -1 11
MONTH TO DATE 187 116 71 158
SINCE SEP 1 187 116 71 158
SINCE JAN 1 1113 988 125 1150
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 3.6
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 6:00 AM
LOWEST 37 3:00 PM
AVERAGE 69
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 92 1971
MINIMUM TEMPERATURE (F) 51 29 1984
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 6:46 AM CDT SUNSET 6:37 PM CDT
SEPTEMBER 30 2026.....SUNRISE 6:48 AM CDT SUNSET 6:35 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$