816
CDUS43 KLOT 240633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT WED SEP 24 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 23 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 78 1:05 PM 95 2017 73 5 67
MINIMUM 66 11:59 PM 29 1995 54 12 60
AVERAGE 72 64 8 64
PRECIPITATION (IN)
YESTERDAY 0.09 2.09 1961 0.10 -0.01 0.02
MONTH TO DATE 0.49 2.48 -1.99 0.88
SINCE SEP 1 0.49 2.48 -1.99 0.88
SINCE JAN 1 22.94 29.19 -6.25 27.74
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 4 -4 1
MONTH TO DATE 32 41 -9 15
SINCE SEP 1 32 41 -9 15
SINCE JUL 1 37 47 -10 15
COOLING
YESTERDAY 7 2 5 0
MONTH TO DATE 120 104 16 167
SINCE SEP 1 120 104 16 167
SINCE JAN 1 1112 976 136 1153
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 8:00 AM
LOWEST 60 1:00 PM
AVERAGE 75
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 93 2017
MINIMUM TEMPERATURE (F) 54 35 1942
1985
1989
SUNRISE AND SUNSET
SEPTEMBER 24 2025.....SUNRISE 6:41 AM CDT SUNSET 6:45 PM CDT
SEPTEMBER 25 2025.....SUNRISE 6:42 AM CDT SUNSET 6:43 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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