959
CDUS43 KLOT 120632
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT FRI SEP 12 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 11 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 77 1:59 PM 95 1952 77 0 87
MINIMUM 62 5:57 AM 42 1993 59 3 59
AVERAGE 70 68 2 73
PRECIPITATION (IN)
YESTERDAY 0.00 2.37 2000 0.11 -0.11 0.00
MONTH TO DATE 0.01 1.23 -1.22 0.04
SINCE SEP 1 0.01 1.23 -1.22 0.04
SINCE JAN 1 22.46 27.94 -5.48 26.90
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 1 -1 0
MONTH TO DATE 32 8 24 14
SINCE SEP 1 32 8 24 14
SINCE JUL 1 37 14 23 14
COOLING
YESTERDAY 5 5 0 8
MONTH TO DATE 19 63 -44 42
SINCE SEP 1 19 63 -44 42
SINCE JAN 1 1011 935 76 1028
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 8.4
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 9:00 PM
LOWEST 50 2:00 PM
AVERAGE 70
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 96 1952
MINIMUM TEMPERATURE (F) 59 44 1955
2014
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 6:29 AM CDT SUNSET 7:06 PM CDT
SEPTEMBER 13 2025.....SUNRISE 6:30 AM CDT SUNSET 7:04 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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